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Table of Contents

The Plant Cell Online: 24 (2)
Feb 2012
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
  • N
  • O
  • P
  • Q
  • R
  • S
  • T
  • U
  • V
  • W
  • X
  • Y
  • Z

A

  1. Aichinger, Ernst

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  2. Allu, Annapurna Devi

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  3. Andrès, Céline Besagni

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  4. Andrés, Fernando

    1. Open Access
      Analysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes Flowering
      Stefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George Coupland
      Plant Cell Feb 2012, 24 (2) 444-462; DOI: https://doi.org/10.1105/tpc.111.092791

      Laser microdissection combined with Solexa sequencing of cDNA was used to analyze the transcriptome of the shoot meristem during the floral transition. Activated genes were placed in pathways downstream or parallel to the inductive signal encoded by FLOWERING LOCUS T.

  5. Antonio, Carla

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  6. Asensi-Fabado, Maria Amparo

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  7. Azzopardi, Marianne

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

B

  1. Balazadeh, Salma

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  2. Baluška, František

    1. You have accessRestricted Access
      The Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root Phototropism
      Yinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing Lin
      Plant Cell Feb 2012, 24 (2) 551-565; DOI: https://doi.org/10.1105/tpc.111.094284

      This work examines blue light–induced root phototropism, finding that it requires the phot1/NONPHOTOTROPIC HYPOCOTYL3 signaling pathway, which stimulates shootward auxin flux by changing PIN2 subcellular localization in the root apex transition zone.

  3. Barajas, Jesus F.

    1. You have accessRestricted Access
      The Arabidopsis Cell Cycle Checkpoint Regulators TANMEI/ALT2 and ATR Mediate the Active Process of Aluminum-Dependent Root Growth Inhibition
      Cynthia D. Nezames, Caroline A. Sjogren, Jesus F. Barajas, Paul B. Larsen
      Plant Cell Feb 2012, 24 (2) 608-621; DOI: https://doi.org/10.1105/tpc.112.095596

      This article examines aluminum (Al) toxicity, finding that root growth arrest is an active process requiring two cell-cycle checkpoint regulators that monitor DNA damage; this indicates that Al may induce DNA damage, thereby triggering root growth arrest.

  4. Basset, Gilles J.C.

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  5. Bauer, Stefan

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  6. Bergmann, Sven

    1. Open Access
      Nuclear Phytochrome A Signaling Promotes Phototropism in Arabidopsis
      Chitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian Fankhauser
      Plant Cell Feb 2012, 24 (2) 566-576; DOI: https://doi.org/10.1105/tpc.111.095083

      This article shows that the phytochrome A photoreceptor promotes reorientation of the hypocotyl toward blue light (phototropism) by regulating the expression of nuclear genes. It also shows that phytochrome A nuclear signaling events still operate in a mutant where phytochrome A does not significantly accumulate in the nucleus.

  7. Bernal, María

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  8. Berns, Markus C.

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  9. Borel, Patrick

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  10. Borisjuk, Ljudmilla

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

  11. Bouarab, Kamal

    1. You have accessRestricted Access
      The Conjugated Auxin Indole-3-Acetic Acid–Aspartic Acid Promotes Plant Disease Development
      Rocío González-Lamothe, Mohamed El Oirdi, Normand Brisson, Kamal Bouarab
      Plant Cell Feb 2012, 24 (2) 762-777; DOI: https://doi.org/10.1105/tpc.111.095190

      Auxin conjugation promotes susceptibility to pathogens. This study reveals that during infection with fungi and bacteria, auxin conjugation is increased in the plant to produce IAA-Asp, which regulates the expression of virulence genes and induces plant susceptibility to pathogens.

  12. Brisson, Normand

    1. You have accessRestricted Access
      The Conjugated Auxin Indole-3-Acetic Acid–Aspartic Acid Promotes Plant Disease Development
      Rocío González-Lamothe, Mohamed El Oirdi, Normand Brisson, Kamal Bouarab
      Plant Cell Feb 2012, 24 (2) 762-777; DOI: https://doi.org/10.1105/tpc.111.095190

      Auxin conjugation promotes susceptibility to pathogens. This study reveals that during infection with fungi and bacteria, auxin conjugation is increased in the plant to produce IAA-Asp, which regulates the expression of virulence genes and induces plant susceptibility to pathogens.

  13. Browse, John

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  14. Bujdoso, Nora

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  15. Burgert, Ingo

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

C

  1. Cai, Kai

    1. You have accessRestricted Access
      A MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicus
      Tao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming Zhang
      Plant Cell Feb 2012, 24 (2) 823-838; DOI: https://doi.org/10.1105/tpc.112.095984

      This work identifies the SIP2 MAP kinase kinase as an interacting partner of the symbiosis receptor kinase SymRK. It shows that SymRK inhibits the kinase activity of SIP2 and establishes that a MAP kinase cascade plays a role in the signaling network leading to nodulation in legumes.

  2. Caris-Veyrat, Catherine

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  3. Carrari, Fernando

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  4. Casero, David

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  5. Catalanotti, Claudia

    1. You have accessRestricted Access
      Altered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol Dehydrogenase
      Claudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. Grossman
      Plant Cell Feb 2012, 24 (2) 692-707; DOI: https://doi.org/10.1105/tpc.111.093146

      This article describes novel ways that algae may adjust metabolite trafficking when specific branches of fermentation metabolism are blocked. This rerouting of metabolites allows for continued glycolytic energy production under anoxic conditions, which is critical for the cell’s survival. Mechanisms associated with this reengineering of metabolism are almost completely unexplored.

  6. Chambrier, Pierre

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  7. Chapman, Kent D.

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

  8. Chen, Tao

    1. You have accessRestricted Access
      A MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicus
      Tao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming Zhang
      Plant Cell Feb 2012, 24 (2) 823-838; DOI: https://doi.org/10.1105/tpc.112.095984

      This work identifies the SIP2 MAP kinase kinase as an interacting partner of the symbiosis receptor kinase SymRK. It shows that SymRK inhibits the kinase activity of SIP2 and establishes that a MAP kinase cascade plays a role in the signaling network leading to nodulation in legumes.

  9. Chen, Xuemei

    1. You have accessRestricted Access
      Effective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in Arabidopsis
      Jun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang Tang
      Plant Cell Feb 2012, 24 (2) 415-427; DOI: https://doi.org/10.1105/tpc.111.094144

      This work presents a technology for effectively silencing endogenous small RNAs by expressing a small tandem target mimic (STTM) composed of two noncleavable small RNA binding sites linked by an empirically determined spacer. Expression of STTM in Arabidopsis thaliana leads to the specific degradation of endogenous small RNAs by small RNA degrading nuclease family enzymes.

  10. Cheng, Zhukuan

    1. You have accessRestricted Access
      Somatic and Reproductive Cell Development in Rice Anther Is Regulated by a Putative Glutaredoxin
      Lilan Hong, Ding Tang, Keming Zhu, Kejian Wang, Ming Li, Zhukuan Cheng
      Plant Cell Feb 2012, 24 (2) 577-588; DOI: https://doi.org/10.1105/tpc.111.093740

      This work demonstrates that plant microsporocytes have specific meiosis initiation machinery by characterizing the rice CC-type glutaredoxin MICROSPORELESS1 (MIL1). The mil1 mutant shows defects both in the meiotic entry of sporogenous cell progenies and in the differentiation of surrounding somatic cell layers.

  11. Clemens, Stephan

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

  12. Clément, Gilles

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  13. Connolly, Erin L.

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  14. Cooke, Thomas F.

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  15. Coupland, George

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

    2. Open Access
      Analysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes Flowering
      Stefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George Coupland
      Plant Cell Feb 2012, 24 (2) 444-462; DOI: https://doi.org/10.1105/tpc.111.092791

      Laser microdissection combined with Solexa sequencing of cDNA was used to analyze the transcriptome of the shoot meristem during the floral transition. Activated genes were placed in pathways downstream or parallel to the inductive signal encoded by FLOWERING LOCUS T.

  16. Crespo, José Luis

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

D

  1. Dauzat, Myriam

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  2. Davis, Seth J.

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  3. Dedieu, Annick

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  4. Deinlein, Ulrich

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

  5. DellaPenna, Dean

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  6. DePew, Cody L.

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  7. Dobrenel, Thomas

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  8. Dodani, Sheel C.

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  9. Dortay, Hakan

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  10. Dubini, Alexandra

    1. You have accessRestricted Access
      Altered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol Dehydrogenase
      Claudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. Grossman
      Plant Cell Feb 2012, 24 (2) 692-707; DOI: https://doi.org/10.1105/tpc.111.093146

      This article describes novel ways that algae may adjust metabolite trafficking when specific branches of fermentation metabolism are blocked. This rerouting of metabolites allows for continued glycolytic energy production under anoxic conditions, which is critical for the cell’s survival. Mechanisms associated with this reengineering of metabolism are almost completely unexplored.

E

  1. Eckardt, Nancy A.

    1. You have accessRestricted Access
      A New Tool for Investigating Small RNA Function
      Nancy A. Eckardt
      Plant Cell Feb 2012, 24 (2) 372; DOI: https://doi.org/10.1105/tpc.112.240211
  2. Ehrhardt, David W.

    1. You have accessRestricted Access
      New Technologies for 21st Century Plant Science
      David W. Ehrhardt, Wolf B. Frommer
      Plant Cell Feb 2012, 24 (2) 374-394; DOI: https://doi.org/10.1105/tpc.111.093302
  3. El Oirdi, Mohamed

    1. You have accessRestricted Access
      The Conjugated Auxin Indole-3-Acetic Acid–Aspartic Acid Promotes Plant Disease Development
      Rocío González-Lamothe, Mohamed El Oirdi, Normand Brisson, Kamal Bouarab
      Plant Cell Feb 2012, 24 (2) 762-777; DOI: https://doi.org/10.1105/tpc.111.095190

      Auxin conjugation promotes susceptibility to pathogens. This study reveals that during infection with fungi and bacteria, auxin conjugation is increased in the plant to produce IAA-Asp, which regulates the expression of virulence genes and induces plant susceptibility to pathogens.

F

  1. Fankhauser, Christian

    1. Open Access
      Nuclear Phytochrome A Signaling Promotes Phototropism in Arabidopsis
      Chitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian Fankhauser
      Plant Cell Feb 2012, 24 (2) 566-576; DOI: https://doi.org/10.1105/tpc.111.095083

      This article shows that the phytochrome A photoreceptor promotes reorientation of the hypocotyl toward blue light (phototropism) by regulating the expression of nuclear genes. It also shows that phytochrome A nuclear signaling events still operate in a mutant where phytochrome A does not significantly accumulate in the nucleus.

  2. Fernie, Alisdair R.

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

    2. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  3. Figueroa, Pablo

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  4. Finazzi, Giovanni

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  5. Fitzpatrick, Teresa B.

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  6. Fornara, Fabio

    1. Open Access
      Analysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes Flowering
      Stefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George Coupland
      Plant Cell Feb 2012, 24 (2) 444-462; DOI: https://doi.org/10.1105/tpc.111.092791

      Laser microdissection combined with Solexa sequencing of cDNA was used to analyze the transcriptome of the shoot meristem during the floral transition. Activated genes were placed in pathways downstream or parallel to the inductive signal encoded by FLOWERING LOCUS T.

  7. Fraser, Paul D.

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  8. Frommer, Wolf B.

    1. You have accessRestricted Access
      New Technologies for 21st Century Plant Science
      David W. Ehrhardt, Wolf B. Frommer
      Plant Cell Feb 2012, 24 (2) 374-394; DOI: https://doi.org/10.1105/tpc.111.093302
  9. Fuchs, Johannes

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

G

  1. Garapati, Prashanth

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  2. Geimer, Stefan

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  3. Gendrot, Ghislaine

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  4. Genoud, Thierry

    1. Open Access
      Nuclear Phytochrome A Signaling Promotes Phototropism in Arabidopsis
      Chitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian Fankhauser
      Plant Cell Feb 2012, 24 (2) 566-576; DOI: https://doi.org/10.1105/tpc.111.095083

      This article shows that the phytochrome A photoreceptor promotes reorientation of the hypocotyl toward blue light (phototropism) by regulating the expression of nuclear genes. It also shows that phytochrome A nuclear signaling events still operate in a mutant where phytochrome A does not significantly accumulate in the nucleus.

  5. Göbel, Ulrike

    1. Open Access
      Analysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes Flowering
      Stefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George Coupland
      Plant Cell Feb 2012, 24 (2) 444-462; DOI: https://doi.org/10.1105/tpc.111.092791

      Laser microdissection combined with Solexa sequencing of cDNA was used to analyze the transcriptome of the shoot meristem during the floral transition. Activated genes were placed in pathways downstream or parallel to the inductive signal encoded by FLOWERING LOCUS T.

  6. Gonçalves, Jorge

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  7. González-Lamothe, Rocío

    1. You have accessRestricted Access
      The Conjugated Auxin Indole-3-Acetic Acid–Aspartic Acid Promotes Plant Disease Development
      Rocío González-Lamothe, Mohamed El Oirdi, Normand Brisson, Kamal Bouarab
      Plant Cell Feb 2012, 24 (2) 762-777; DOI: https://doi.org/10.1105/tpc.111.095190

      Auxin conjugation promotes susceptibility to pathogens. This study reveals that during infection with fungi and bacteria, auxin conjugation is increased in the plant to produce IAA-Asp, which regulates the expression of virulence genes and induces plant susceptibility to pathogens.

  8. Gou, Honglan

    1. You have accessRestricted Access
      A MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicus
      Tao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming Zhang
      Plant Cell Feb 2012, 24 (2) 823-838; DOI: https://doi.org/10.1105/tpc.112.095984

      This work identifies the SIP2 MAP kinase kinase as an interacting partner of the symbiosis receptor kinase SymRK. It shows that SymRK inhibits the kinase activity of SIP2 and establishes that a MAP kinase cascade plays a role in the signaling network leading to nodulation in legumes.

  9. Grande, Arne

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  10. Grossman, Arthur R.

    1. You have accessRestricted Access
      Altered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol Dehydrogenase
      Claudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. Grossman
      Plant Cell Feb 2012, 24 (2) 692-707; DOI: https://doi.org/10.1105/tpc.111.093146

      This article describes novel ways that algae may adjust metabolite trafficking when specific branches of fermentation metabolism are blocked. This rerouting of metabolites allows for continued glycolytic energy production under anoxic conditions, which is critical for the cell’s survival. Mechanisms associated with this reengineering of metabolism are almost completely unexplored.

  11. Gu, Yiyou

    1. You have accessRestricted Access
      Effective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in Arabidopsis
      Jun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang Tang
      Plant Cell Feb 2012, 24 (2) 415-427; DOI: https://doi.org/10.1105/tpc.111.094144

      This work presents a technology for effectively silencing endogenous small RNAs by expressing a small tandem target mimic (STTM) composed of two noncleavable small RNA binding sites linked by an empirically determined spacer. Expression of STTM in Arabidopsis thaliana leads to the specific degradation of endogenous small RNAs by small RNA degrading nuclease family enzymes.

  12. Gügel, Irene L.

    1. You have accessRestricted Access
      Initial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in Synechocystis
      Anna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg Nickelsen
      Plant Cell Feb 2012, 24 (2) 660-675; DOI: https://doi.org/10.1105/tpc.111.093914

      This work finds that the photosystem II (PSII) assembly factor PratA from the cyanobacterium Synechocystis is involved in efficient delivery of manganese to PSII and is organized in distinct structures connecting plasma and thylakoid membranes. It proposes that initial steps of PSII assembly, including its preloading with manganese, take place at these PratA-dependent biogenesis centers.

  13. Guyon, Virginie

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

H

  1. Han, Su-Hyun

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  2. Hansen, Thomas H.

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

  3. Hao, Huaiqing

    1. You have accessRestricted Access
      The Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root Phototropism
      Yinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing Lin
      Plant Cell Feb 2012, 24 (2) 551-565; DOI: https://doi.org/10.1105/tpc.111.094284

      This work examines blue light–induced root phototropism, finding that it requires the phot1/NONPHOTOTROPIC HYPOCOTYL3 signaling pathway, which stimulates shootward auxin flux by changing PIN2 subcellular localization in the root apex transition zone.

  4. Hashimoto, Masayoshi

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  5. Hauser, Marie-Theres

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  6. Hayashi, Makoto

    1. You have accessRestricted Access
      Nuclear-Localized and Deregulated Calcium- and Calmodulin-Dependent Protein Kinase Activates Rhizobial and Mycorrhizal Responses in Lotus japonicus
      Naoya Takeda, Takaki Maekawa, Makoto Hayashi
      Plant Cell Feb 2012, 24 (2) 810-822; DOI: https://doi.org/10.1105/tpc.111.091827

      Calcium- and calmodulin-dependent protein kinase (CCaMK) is a protein kinase that is crucial for plant-microbe symbioses. This work shows the importance of nuclear localization of CCaMK for its function in plant symbiotic responses. Moreover, activation of CCaMK in the nucleus induces cytological changes similar to those important for fungal infection, without presence of the symbiotic fungi.

  7. Haydon, Michael J.

    1. You have accessRestricted Access
      Vacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in Arabidopsis
      Michael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 724-737; DOI: https://doi.org/10.1105/tpc.111.095042

      This work implicates the Arabidopsis membrane protein ZIF1 in the vacuolar accumulation of the low molecular mass metal chelator nicotianamine. Precise regulation of intracellular nicotianamine distribution is critical for both Zn and Fe homeostasis as well as for the selective discrimination between these chemically similar micronutrients along the pathway of their movement inside the plant.

  8. Hell, Rüdiger

    1. You have accessRestricted Access
      Vacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in Arabidopsis
      Michael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 724-737; DOI: https://doi.org/10.1105/tpc.111.095042

      This work implicates the Arabidopsis membrane protein ZIF1 in the vacuolar accumulation of the low molecular mass metal chelator nicotianamine. Precise regulation of intracellular nicotianamine distribution is critical for both Zn and Fe homeostasis as well as for the selective discrimination between these chemically similar micronutrients along the pathway of their movement inside the plant.

  9. Hellmann, Hanjo

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  10. Hématy, Kian

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  11. Herrero, Eva

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  12. Hersch, Micha

    1. Open Access
      Nuclear Phytochrome A Signaling Promotes Phototropism in Arabidopsis
      Chitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian Fankhauser
      Plant Cell Feb 2012, 24 (2) 566-576; DOI: https://doi.org/10.1105/tpc.111.095083

      This article shows that the phytochrome A photoreceptor promotes reorientation of the hypocotyl toward blue light (phototropism) by regulating the expression of nuclear genes. It also shows that phytochrome A nuclear signaling events still operate in a mutant where phytochrome A does not significantly accumulate in the nucleus.

  13. Heurtevin, Laure

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  14. Hilger, Daniel

    1. You have accessRestricted Access
      Initial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in Synechocystis
      Anna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg Nickelsen
      Plant Cell Feb 2012, 24 (2) 660-675; DOI: https://doi.org/10.1105/tpc.111.093914

      This work finds that the photosystem II (PSII) assembly factor PratA from the cyanobacterium Synechocystis is involved in efficient delivery of manganese to PSII and is organized in distinct structures connecting plasma and thylakoid membranes. It proposes that initial steps of PSII assembly, including its preloading with manganese, take place at these PratA-dependent biogenesis centers.

  15. Hillmer, Stefan

    1. You have accessRestricted Access
      Vacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in Arabidopsis
      Michael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 724-737; DOI: https://doi.org/10.1105/tpc.111.095042

      This work implicates the Arabidopsis membrane protein ZIF1 in the vacuolar accumulation of the low molecular mass metal chelator nicotianamine. Precise regulation of intracellular nicotianamine distribution is critical for both Zn and Fe homeostasis as well as for the selective discrimination between these chemically similar micronutrients along the pathway of their movement inside the plant.

  16. Hiltbrunner, Andreas

    1. Open Access
      Nuclear Phytochrome A Signaling Promotes Phototropism in Arabidopsis
      Chitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian Fankhauser
      Plant Cell Feb 2012, 24 (2) 566-576; DOI: https://doi.org/10.1105/tpc.111.095083

      This article shows that the phytochrome A photoreceptor promotes reorientation of the hypocotyl toward blue light (phototropism) by regulating the expression of nuclear genes. It also shows that phytochrome A nuclear signaling events still operate in a mutant where phytochrome A does not significantly accumulate in the nucleus.

  17. Himeno, Misako

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  18. Hofmann, Nancy R.

    1. You have accessRestricted Access
      Nicotianamine in Zinc and Iron Homeostasis
      Nancy R. Hofmann
      Plant Cell Feb 2012, 24 (2) 373; DOI: https://doi.org/10.1105/tpc.112.240212
  19. Hong, Lilan

    1. You have accessRestricted Access
      Somatic and Reproductive Cell Development in Rice Anther Is Regulated by a Putative Glutaredoxin
      Lilan Hong, Ding Tang, Keming Zhu, Kejian Wang, Ming Li, Zhukuan Cheng
      Plant Cell Feb 2012, 24 (2) 577-588; DOI: https://doi.org/10.1105/tpc.111.093740

      This work demonstrates that plant microsporocytes have specific meiosis initiation machinery by characterizing the rice CC-type glutaredoxin MICROSPORELESS1 (MIL1). The mil1 mutant shows defects both in the meiotic entry of sporogenous cell progenies and in the differentiation of surrounding somatic cell layers.

  20. Hong, Zonglie

    1. You have accessRestricted Access
      A MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicus
      Tao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming Zhang
      Plant Cell Feb 2012, 24 (2) 823-838; DOI: https://doi.org/10.1105/tpc.112.095984

      This work identifies the SIP2 MAP kinase kinase as an interacting partner of the symbiosis receptor kinase SymRK. It shows that SymRK inhibits the kinase activity of SIP2 and establishes that a MAP kinase cascade plays a role in the signaling network leading to nodulation in legumes.

  21. Horn, Patrick J.

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

  22. Hörtensteiner, Stefan

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  23. Howe, Gregg A.

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  24. Huijser, Peter

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  25. Husted, Søren

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

I

  1. Ibáñez, Ana Belén

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

J

  1. Jasik, Jan

    1. You have accessRestricted Access
      The Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root Phototropism
      Yinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing Lin
      Plant Cell Feb 2012, 24 (2) 551-565; DOI: https://doi.org/10.1105/tpc.111.094284

      This work examines blue light–induced root phototropism, finding that it requires the phot1/NONPHOTOTROPIC HYPOCOTYL3 signaling pathway, which stimulates shootward auxin flux by changing PIN2 subcellular localization in the root apex transition zone.

  2. Jaskolski, Mariusz

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  3. Jia, Xiaoyun

    1. You have accessRestricted Access
      Effective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in Arabidopsis
      Jun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang Tang
      Plant Cell Feb 2012, 24 (2) 415-427; DOI: https://doi.org/10.1105/tpc.111.094144

      This work presents a technology for effectively silencing endogenous small RNAs by expressing a small tandem target mimic (STTM) composed of two noncleavable small RNA binding sites linked by an empirically determined spacer. Expression of STTM in Arabidopsis thaliana leads to the specific degradation of endogenous small RNAs by small RNA degrading nuclease family enzymes.

  4. Jung, Heinrich

    1. You have accessRestricted Access
      Initial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in Synechocystis
      Anna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg Nickelsen
      Plant Cell Feb 2012, 24 (2) 660-675; DOI: https://doi.org/10.1105/tpc.111.093914

      This work finds that the photosystem II (PSII) assembly factor PratA from the cyanobacterium Synechocystis is involved in efficient delivery of manganese to PSII and is organized in distinct structures connecting plasma and thylakoid membranes. It proposes that initial steps of PSII assembly, including its preloading with manganese, take place at these PratA-dependent biogenesis centers.

K

  1. Kami, Chitose

    1. Open Access
      Nuclear Phytochrome A Signaling Promotes Phototropism in Arabidopsis
      Chitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian Fankhauser
      Plant Cell Feb 2012, 24 (2) 566-576; DOI: https://doi.org/10.1105/tpc.111.095083

      This article shows that the phytochrome A photoreceptor promotes reorientation of the hypocotyl toward blue light (phototropism) by regulating the expression of nuclear genes. It also shows that phytochrome A nuclear signaling events still operate in a mutant where phytochrome A does not significantly accumulate in the nucleus.

  2. Kang, Wenjun

    1. You have accessRestricted Access
      Effective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in Arabidopsis
      Jun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang Tang
      Plant Cell Feb 2012, 24 (2) 415-427; DOI: https://doi.org/10.1105/tpc.111.094144

      This work presents a technology for effectively silencing endogenous small RNAs by expressing a small tandem target mimic (STTM) composed of two noncleavable small RNA binding sites linked by an empirically determined spacer. Expression of STTM in Arabidopsis thaliana leads to the specific degradation of endogenous small RNAs by small RNA degrading nuclease family enzymes.

  3. Katsir, Leron

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  4. Kaufmann, Kerstin

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  5. Kawachi, Miki

    1. You have accessRestricted Access
      Vacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in Arabidopsis
      Michael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 724-737; DOI: https://doi.org/10.1105/tpc.111.095042

      This work implicates the Arabidopsis membrane protein ZIF1 in the vacuolar accumulation of the low molecular mass metal chelator nicotianamine. Precise regulation of intracellular nicotianamine distribution is critical for both Zn and Fe homeostasis as well as for the selective discrimination between these chemically similar micronutrients along the pathway of their movement inside the plant.

  6. Ke, Danxia

    1. You have accessRestricted Access
      A MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicus
      Tao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming Zhang
      Plant Cell Feb 2012, 24 (2) 823-838; DOI: https://doi.org/10.1105/tpc.112.095984

      This work identifies the SIP2 MAP kinase kinase as an interacting partner of the symbiosis receptor kinase SymRK. It shows that SymRK inhibits the kinase activity of SIP2 and establishes that a MAP kinase cascade plays a role in the signaling network leading to nodulation in legumes.

  7. Kessler, Felix

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  8. Knoll, Daniela

    1. Open Access
      Analysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes Flowering
      Stefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George Coupland
      Plant Cell Feb 2012, 24 (2) 444-462; DOI: https://doi.org/10.1105/tpc.111.092791

      Laser microdissection combined with Solexa sequencing of cDNA was used to analyze the transcriptome of the shoot meristem during the floral transition. Activated genes were placed in pathways downstream or parallel to the inductive signal encoded by FLOWERING LOCUS T.

  9. Kogel, Karl-Heinz

    1. You have accessRestricted Access
      The Mutualistic Fungus Piriformospora indica Colonizes Arabidopsis Roots by Inducing an Endoplasmic Reticulum Stress–Triggered Caspase-Dependent Cell Death
      Xiaoyu Qiang, Bernd Zechmann, Marco U. Reitz, Karl-Heinz Kogel, Patrick Schäfer
      Plant Cell Feb 2012, 24 (2) 794-809; DOI: https://doi.org/10.1105/tpc.111.093260

      This work examines the molecular basis of cell death–associated root colonization of Arabidopsis by the mutualistic fungus P. indica. The data support the existence of a previously unknown pathway in plants, in which ER stress induces a vacuole-mediated cell death dependent on VPE/caspase 1–like activities.

  10. Kolmos, Elsebeth

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  11. Komatsu, Ken

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  12. Konlechner, Cornelia

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  13. Korte, Andrew R.

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

  14. Krämer, Ute

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

    2. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

    3. You have accessRestricted Access
      Vacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in Arabidopsis
      Michael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 724-737; DOI: https://doi.org/10.1105/tpc.111.095042

      This work implicates the Arabidopsis membrane protein ZIF1 in the vacuolar accumulation of the low molecular mass metal chelator nicotianamine. Precise regulation of intracellular nicotianamine distribution is critical for both Zn and Fe homeostasis as well as for the selective discrimination between these chemically similar micronutrients along the pathway of their movement inside the plant.

  15. Krieger-Liszkay, Anja

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

L

  1. Larsen, Paul B.

    1. You have accessRestricted Access
      The Arabidopsis Cell Cycle Checkpoint Regulators TANMEI/ALT2 and ATR Mediate the Active Process of Aluminum-Dependent Root Growth Inhibition
      Cynthia D. Nezames, Caroline A. Sjogren, Jesus F. Barajas, Paul B. Larsen
      Plant Cell Feb 2012, 24 (2) 608-621; DOI: https://doi.org/10.1105/tpc.112.095596

      This article examines aluminum (Al) toxicity, finding that root growth arrest is an active process requiring two cell-cycle checkpoint regulators that monitor DNA damage; this indicates that Al may induce DNA damage, thereby triggering root growth arrest.

  2. Laux, Thomas

    1. Open Access
      Roles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in Arabidopsis
      Miyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka Okada
      Plant Cell Feb 2012, 24 (2) 519-535; DOI: https://doi.org/10.1105/tpc.111.092858

      This work proposes that the middle domain, which is distinct from the adaxial (upper) and abaxial (lower) domains, plays a key role in coordinating two important processes in early leaf development, blade outgrowth, and adaxial/abaxial patterning, through the actions of the middle domain–specific WOX genes, PRS and WOX1, in concert with the adaxial- and abaxial-specific genes.

  3. Lee, Byoung-Doo

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  4. Lee, Young-Jin

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

  5. Li, Ming

    1. You have accessRestricted Access
      Somatic and Reproductive Cell Development in Rice Anther Is Regulated by a Putative Glutaredoxin
      Lilan Hong, Ding Tang, Keming Zhu, Kejian Wang, Ming Li, Zhukuan Cheng
      Plant Cell Feb 2012, 24 (2) 577-588; DOI: https://doi.org/10.1105/tpc.111.093740

      This work demonstrates that plant microsporocytes have specific meiosis initiation machinery by characterizing the rice CC-type glutaredoxin MICROSPORELESS1 (MIL1). The mil1 mutant shows defects both in the meiotic entry of sporogenous cell progenies and in the differentiation of surrounding somatic cell layers.

  6. Lin, Jinxing

    1. You have accessRestricted Access
      The Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root Phototropism
      Yinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing Lin
      Plant Cell Feb 2012, 24 (2) 551-565; DOI: https://doi.org/10.1105/tpc.111.094284

      This work examines blue light–induced root phototropism, finding that it requires the phot1/NONPHOTOTROPIC HYPOCOTYL3 signaling pathway, which stimulates shootward auxin flux by changing PIN2 subcellular localization in the root apex transition zone.

  7. Lokstein, Heiko

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  8. Love, Ebony

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

M

  1. Mach, Jennifer

    1. You have accessRestricted Access
      Mass Spectrometry Imaging with Single-Cell Resolution: Spatial Distribution of Lipids in Cotton Seeds
      Jennifer Mach
      Plant Cell Feb 2012, 24 (2) 371; DOI: https://doi.org/10.1105/tpc.112.240210
  2. Maejima, Kensaku

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  3. Maekawa, Takaki

    1. You have accessRestricted Access
      Nuclear-Localized and Deregulated Calcium- and Calmodulin-Dependent Protein Kinase Activates Rhizobial and Mycorrhizal Responses in Lotus japonicus
      Naoya Takeda, Takaki Maekawa, Makoto Hayashi
      Plant Cell Feb 2012, 24 (2) 810-822; DOI: https://doi.org/10.1105/tpc.111.091827

      Calcium- and calmodulin-dependent protein kinase (CCaMK) is a protein kinase that is crucial for plant-microbe symbioses. This work shows the importance of nuclear localization of CCaMK for its function in plant symbiotic responses. Moreover, activation of CCaMK in the nucleus induces cytological changes similar to those important for fungal infection, without presence of the symbiotic fungi.

  4. Magneschi, Leonardo

    1. You have accessRestricted Access
      Altered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol Dehydrogenase
      Claudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. Grossman
      Plant Cell Feb 2012, 24 (2) 692-707; DOI: https://doi.org/10.1105/tpc.111.093146

      This article describes novel ways that algae may adjust metabolite trafficking when specific branches of fermentation metabolism are blocked. This rerouting of metabolites allows for continued glycolytic energy production under anoxic conditions, which is critical for the cell’s survival. Mechanisms associated with this reengineering of metabolism are almost completely unexplored.

  5. Mancuso, Stefano

    1. You have accessRestricted Access
      The Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root Phototropism
      Yinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing Lin
      Plant Cell Feb 2012, 24 (2) 551-565; DOI: https://doi.org/10.1105/tpc.111.094284

      This work examines blue light–induced root phototropism, finding that it requires the phot1/NONPHOTOTROPIC HYPOCOTYL3 signaling pathway, which stimulates shootward auxin flux by changing PIN2 subcellular localization in the root apex transition zone.

  6. Marchive, Chloé

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  7. Martin-Magniette, Marie-Laure

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  8. Matsumoto, Noritaka

    1. Open Access
      Roles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in Arabidopsis
      Miyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka Okada
      Plant Cell Feb 2012, 24 (2) 519-535; DOI: https://doi.org/10.1105/tpc.111.092858

      This work proposes that the middle domain, which is distinct from the adaxial (upper) and abaxial (lower) domains, plays a key role in coordinating two important processes in early leaf development, blade outgrowth, and adaxial/abaxial patterning, through the actions of the middle domain–specific WOX genes, PRS and WOX1, in concert with the adaxial- and abaxial-specific genes.

  9. Mbelo, Sylvie

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  10. Menzel, Diedrik

    1. You have accessRestricted Access
      The Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root Phototropism
      Yinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing Lin
      Plant Cell Feb 2012, 24 (2) 551-565; DOI: https://doi.org/10.1105/tpc.111.094284

      This work examines blue light–induced root phototropism, finding that it requires the phot1/NONPHOTOTROPIC HYPOCOTYL3 signaling pathway, which stimulates shootward auxin flux by changing PIN2 subcellular localization in the root apex transition zone.

  11. Merchant, Sabeeha S.

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  12. Meyer, Christian

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  13. Minato, Nami

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  14. Miura, Chihiro

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  15. Moreau, Manon

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  16. Moreno, Javier E.

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  17. Mueller-Roeber, Bernd

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  18. Mühlhaus, Timo

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  19. Munné-Bosch, Sergi

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  20. Mus, Florence

    1. You have accessRestricted Access
      Altered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol Dehydrogenase
      Claudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. Grossman
      Plant Cell Feb 2012, 24 (2) 692-707; DOI: https://doi.org/10.1105/tpc.111.093146

      This article describes novel ways that algae may adjust metabolite trafficking when specific branches of fermentation metabolism are blocked. This rerouting of metabolites allows for continued glycolytic energy production under anoxic conditions, which is critical for the cell’s survival. Mechanisms associated with this reengineering of metabolism are almost completely unexplored.

N

  1. Nakata, Miyuki

    1. Open Access
      Roles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in Arabidopsis
      Miyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka Okada
      Plant Cell Feb 2012, 24 (2) 519-535; DOI: https://doi.org/10.1105/tpc.111.092858

      This work proposes that the middle domain, which is distinct from the adaxial (upper) and abaxial (lower) domains, plays a key role in coordinating two important processes in early leaf development, blade outgrowth, and adaxial/abaxial patterning, through the actions of the middle domain–specific WOX genes, PRS and WOX1, in concert with the adaxial- and abaxial-specific genes.

  2. Namba, Shigetou

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  3. Neogi, Purnima B.

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

  4. Neriya, Yutaro

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  5. Neumetzler, Lutz

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  6. Nezames, Cynthia D.

    1. You have accessRestricted Access
      The Arabidopsis Cell Cycle Checkpoint Regulators TANMEI/ALT2 and ATR Mediate the Active Process of Aluminum-Dependent Root Growth Inhibition
      Cynthia D. Nezames, Caroline A. Sjogren, Jesus F. Barajas, Paul B. Larsen
      Plant Cell Feb 2012, 24 (2) 608-621; DOI: https://doi.org/10.1105/tpc.112.095596

      This article examines aluminum (Al) toxicity, finding that root growth arrest is an active process requiring two cell-cycle checkpoint regulators that monitor DNA damage; this indicates that Al may induce DNA damage, thereby triggering root growth arrest.

  7. Nickelsen, Jörg

    1. You have accessRestricted Access
      Initial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in Synechocystis
      Anna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg Nickelsen
      Plant Cell Feb 2012, 24 (2) 660-675; DOI: https://doi.org/10.1105/tpc.111.093914

      This work finds that the photosystem II (PSII) assembly factor PratA from the cyanobacterium Synechocystis is involved in efficient delivery of manganese to PSII and is organized in distinct structures connecting plasma and thylakoid membranes. It proposes that initial steps of PSII assembly, including its preloading with manganese, take place at these PratA-dependent biogenesis centers.

  8. Nordhues, André

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  9. Nordström, Karl

    1. Open Access
      Analysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes Flowering
      Stefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George Coupland
      Plant Cell Feb 2012, 24 (2) 444-462; DOI: https://doi.org/10.1105/tpc.111.092791

      Laser microdissection combined with Solexa sequencing of cDNA was used to analyze the transcriptome of the shoot meristem during the floral transition. Activated genes were placed in pathways downstream or parallel to the inductive signal encoded by FLOWERING LOCUS T.

O

  1. Okada, Kiyotaka

    1. Open Access
      Roles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in Arabidopsis
      Miyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka Okada
      Plant Cell Feb 2012, 24 (2) 519-535; DOI: https://doi.org/10.1105/tpc.111.092858

      This work proposes that the middle domain, which is distinct from the adaxial (upper) and abaxial (lower) domains, plays a key role in coordinating two important processes in early leaf development, blade outgrowth, and adaxial/abaxial patterning, through the actions of the middle domain–specific WOX genes, PRS and WOX1, in concert with the adaxial- and abaxial-specific genes.

  2. Okano, Yukari

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  3. Osorio, Sonia

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120

P

  1. Paek, Nam-Chon

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  2. Pan, Shangjin

    1. You have accessRestricted Access
      Effective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in Arabidopsis
      Jun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang Tang
      Plant Cell Feb 2012, 24 (2) 415-427; DOI: https://doi.org/10.1105/tpc.111.094144

      This work presents a technology for effectively silencing endogenous small RNAs by expressing a small tandem target mimic (STTM) composed of two noncleavable small RNA binding sites linked by an empirically determined spacer. Expression of STTM in Arabidopsis thaliana leads to the specific degradation of endogenous small RNAs by small RNA degrading nuclease family enzymes.

  3. Park, So-Yon

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  4. Pellegrini, Matteo

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  5. Persson, Staffan

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  6. Posewitz, Matthew C.

    1. You have accessRestricted Access
      Altered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol Dehydrogenase
      Claudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. Grossman
      Plant Cell Feb 2012, 24 (2) 692-707; DOI: https://doi.org/10.1105/tpc.111.093146

      This article describes novel ways that algae may adjust metabolite trafficking when specific branches of fermentation metabolism are blocked. This rerouting of metabolites allows for continued glycolytic energy production under anoxic conditions, which is critical for the cell’s survival. Mechanisms associated with this reengineering of metabolism are almost completely unexplored.

Q

  1. Qiang, Xiaoyu

    1. You have accessRestricted Access
      The Mutualistic Fungus Piriformospora indica Colonizes Arabidopsis Roots by Inducing an Endoplasmic Reticulum Stress–Triggered Caspase-Dependent Cell Death
      Xiaoyu Qiang, Bernd Zechmann, Marco U. Reitz, Karl-Heinz Kogel, Patrick Schäfer
      Plant Cell Feb 2012, 24 (2) 794-809; DOI: https://doi.org/10.1105/tpc.111.093260

      This work examines the molecular basis of cell death–associated root colonization of Arabidopsis by the mutualistic fungus P. indica. The data support the existence of a previously unknown pathway in plants, in which ER stress induces a vacuole-mediated cell death dependent on VPE/caspase 1–like activities.

R

  1. Reitz, Marco U.

    1. You have accessRestricted Access
      The Mutualistic Fungus Piriformospora indica Colonizes Arabidopsis Roots by Inducing an Endoplasmic Reticulum Stress–Triggered Caspase-Dependent Cell Death
      Xiaoyu Qiang, Bernd Zechmann, Marco U. Reitz, Karl-Heinz Kogel, Patrick Schäfer
      Plant Cell Feb 2012, 24 (2) 794-809; DOI: https://doi.org/10.1105/tpc.111.093260

      This work examines the molecular basis of cell death–associated root colonization of Arabidopsis by the mutualistic fungus P. indica. The data support the existence of a previously unknown pathway in plants, in which ER stress induces a vacuole-mediated cell death dependent on VPE/caspase 1–like activities.

  2. Rengstl, Birgit

    1. You have accessRestricted Access
      Initial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in Synechocystis
      Anna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg Nickelsen
      Plant Cell Feb 2012, 24 (2) 660-675; DOI: https://doi.org/10.1105/tpc.111.093914

      This work finds that the photosystem II (PSII) assembly factor PratA from the cyanobacterium Synechocystis is involved in efficient delivery of manganese to PSII and is organized in distinct structures connecting plasma and thylakoid membranes. It proposes that initial steps of PSII assembly, including its preloading with manganese, take place at these PratA-dependent biogenesis centers.

  3. Renne, Charlotte

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  4. Renou, Jean-Pierre

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  5. Rensch, Stefan

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

  6. Rikirsch, Enno

    1. Open Access
      Roles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in Arabidopsis
      Miyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka Okada
      Plant Cell Feb 2012, 24 (2) 519-535; DOI: https://doi.org/10.1105/tpc.111.092858

      This work proposes that the middle domain, which is distinct from the adaxial (upper) and abaxial (lower) domains, plays a key role in coordinating two important processes in early leaf development, blade outgrowth, and adaxial/abaxial patterning, through the actions of the middle domain–specific WOX genes, PRS and WOX1, in concert with the adaxial- and abaxial-specific genes.

  7. Roach, Thomas

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  8. Robaglia, Christophe

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  9. Rogowsky, Peter M.

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  10. Rothan, Christophe

    1. You have accessRestricted Access
      Vitamin Deficiencies in Humans: Can Plant Science Help?
      Teresa B. Fitzpatrick, Gilles J.C. Basset, Patrick Borel, Fernando Carrari, Dean DellaPenna, Paul D. Fraser, Hanjo Hellmann, Sonia Osorio, Christophe Rothan, Victoriano Valpuesta, Catherine Caris-Veyrat, Alisdair R. Fernie
      Plant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
  11. Rüggeberg, Markus

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  12. Rütgers, Mark

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

S

  1. Saini, Reena

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  2. Sakuraba, Yasuhito

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  3. Sampathkumar, Arun

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  4. Sánchez-Rodríguez, Clara

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  5. Saxe, Friederike

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  6. Schäfer, Patrick

    1. You have accessRestricted Access
      The Mutualistic Fungus Piriformospora indica Colonizes Arabidopsis Roots by Inducing an Endoplasmic Reticulum Stress–Triggered Caspase-Dependent Cell Death
      Xiaoyu Qiang, Bernd Zechmann, Marco U. Reitz, Karl-Heinz Kogel, Patrick Schäfer
      Plant Cell Feb 2012, 24 (2) 794-809; DOI: https://doi.org/10.1105/tpc.111.093260

      This work examines the molecular basis of cell death–associated root colonization of Arabidopsis by the mutualistic fungus P. indica. The data support the existence of a previously unknown pathway in plants, in which ER stress induces a vacuole-mediated cell death dependent on VPE/caspase 1–like activities.

  7. Schelbert, Silvia

    1. You have accessRestricted Access
      STAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in Arabidopsis
      Yasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon Paek
      Plant Cell Feb 2012, 24 (2) 507-518; DOI: https://doi.org/10.1105/tpc.111.089474

      This work shows that the chloroplast-localized components of the chlorophyll catabolic pathway dynamically interact with each other, possibly forming a multiprotein complex specifically localizing to light-harvesting complex II. This interaction likely channels chlorophyll breakdown intermediates and thereby prevents potential chlorophyll-derived phototoxicity during leaf senescence.

  8. Schjoerring, Jan K.

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

  9. Schmidt, Holger

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

  10. Schmollinger, Stefan

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  11. Schönfelder, Stephanie

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  12. Schoof, Heiko

    1. Open Access
      Analysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes Flowering
      Stefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George Coupland
      Plant Cell Feb 2012, 24 (2) 444-462; DOI: https://doi.org/10.1105/tpc.111.092791

      Laser microdissection combined with Solexa sequencing of cDNA was used to analyze the transcriptome of the shoot meristem during the floral transition. Activated genes were placed in pathways downstream or parallel to the inductive signal encoded by FLOWERING LOCUS T.

  13. Schöttler, Mark Aurel

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  14. Schroda, Michael

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  15. Seibert, Michael

    1. You have accessRestricted Access
      Altered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol Dehydrogenase
      Claudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. Grossman
      Plant Cell Feb 2012, 24 (2) 692-707; DOI: https://doi.org/10.1105/tpc.111.093146

      This article describes novel ways that algae may adjust metabolite trafficking when specific branches of fermentation metabolism are blocked. This rerouting of metabolites allows for continued glycolytic energy production under anoxic conditions, which is critical for the cell’s survival. Mechanisms associated with this reengineering of metabolism are almost completely unexplored.

  16. Sheard, Laura B.

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  17. Shiraishi, Takuya

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

  18. Shulaev, Vladimir

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

  19. Shyu, Christine

    1. You have accessRestricted Access
      JAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in Arabidopsis
      Christine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. Howe
      Plant Cell Feb 2012, 24 (2) 536-550; DOI: https://doi.org/10.1105/tpc.111.093005

      This study demonstrates that sequence variation in the ligand-interacting degron modulates the stability of JAZ8 and, as a consequence, the extent to which JAZ8 represses jasmonate-responsive gene expression. This study also shows that JAZ8 is an EAR motif–containing protein that represses gene expression by direct recruitment of the corepressor TOPLESS to cognate transcription factors.

  20. Siddiqui, Hamad

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  21. Singh, Vasantika

    1. You have accessRestricted Access
      Transcriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in Arabidopsis
      María Bernal, David Casero, Vasantika Singh, Grandon T. Wilson, Arne Grande, Huijun Yang, Sheel C. Dodani, Matteo Pellegrini, Peter Huijser, Erin L. Connolly, Sabeeha S. Merchant, Ute Krämer
      Plant Cell Feb 2012, 24 (2) 738-761; DOI: https://doi.org/10.1105/tpc.111.090431

      In a genome-wide analysis of the transcriptional changes in Arabidopsis thaliana in response to Cu deficiency, about 13% are found to depend on the transcription factor SPL7. These include the genes encoding Cu(II) reductases FRO4 and FRO5, which are shown to act in high-affinity root Cu uptake. Severe physiological Cu deficiency results in a disruption of Fe homeostasis.

  22. Sjogren, Caroline A.

    1. You have accessRestricted Access
      The Arabidopsis Cell Cycle Checkpoint Regulators TANMEI/ALT2 and ATR Mediate the Active Process of Aluminum-Dependent Root Growth Inhibition
      Cynthia D. Nezames, Caroline A. Sjogren, Jesus F. Barajas, Paul B. Larsen
      Plant Cell Feb 2012, 24 (2) 608-621; DOI: https://doi.org/10.1105/tpc.112.095596

      This article examines aluminum (Al) toxicity, finding that root growth arrest is an active process requiring two cell-cycle checkpoint regulators that monitor DNA damage; this indicates that Al may induce DNA damage, thereby triggering root growth arrest.

  23. Somerville, Chris

    1. Open Access
      CHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in Arabidopsis
      Clara Sánchez-Rodríguez, Stefan Bauer, Kian Hématy, Friederike Saxe, Ana Belén Ibáñez, Vera Vodermaier, Cornelia Konlechner, Arun Sampathkumar, Markus Rüggeberg, Ernst Aichinger, Lutz Neumetzler, Ingo Burgert, Chris Somerville, Marie-Theres Hauser, Staffan Persson
      Plant Cell Feb 2012, 24 (2) 589-607; DOI: https://doi.org/10.1105/tpc.111.094672

      Cell wall and cellulose structure is imperative for proper cell elongation and, consequently, the architecture of plants, but components regulating cellulose structure are still elusive. This article shows that the secreted CTL1/POM1 and its close homolog CTL2 interact with glucan-based polymers and influence cellulose crystallinity and cell expansion.

  24. Sommer, Frederik

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  25. Soppa, Barbara

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24 (2) 637-659; DOI: https://doi.org/10.1105/tpc.111.092692

      This work shows that suppressing the expression of the vesicle-inducing protein in plastids (VIPP1) in Chlamydomonas leads to aberrant structures at the origin of thylakoids and to structural defects particularly in photosystem II that render mutants sensitive to high light. The data indicate that VIPPs act in the biogenesis of thylakoid membrane core complexes, in particular the photosystems.

  26. Sosso, Davide

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  27. Stengel, Anna

    1. You have accessRestricted Access
      Initial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in Synechocystis
      Anna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg Nickelsen
      Plant Cell Feb 2012, 24 (2) 660-675; DOI: https://doi.org/10.1105/tpc.111.093914

      This work finds that the photosystem II (PSII) assembly factor PratA from the cyanobacterium Synechocystis is involved in efficient delivery of manganese to PSII and is organized in distinct structures connecting plasma and thylakoid membranes. It proposes that initial steps of PSII assembly, including its preloading with manganese, take place at these PratA-dependent biogenesis centers.

  28. Strupat, Kerstin

    1. Open Access
      Spatial Mapping of Lipids at Cellular Resolution in Embryos of Cotton
      Patrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. Chapman
      Plant Cell Feb 2012, 24 (2) 622-636; DOI: https://doi.org/10.1105/tpc.111.094581

      The visualization of storage, membrane, and signaling lipid species in embryos of cottonseeds at cellular resolution suggests that lipid species, even those in the same class, are distributed heterogeneously in tissues. This work provides new information about metabolite distribution and points to a previously unknown complexity in cellular biochemistry within plant tissues.

  29. Subramanian, Venkataramanan

    1. You have accessRestricted Access
      Altered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol Dehydrogenase
      Claudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. Grossman
      Plant Cell Feb 2012, 24 (2) 692-707; DOI: https://doi.org/10.1105/tpc.111.093146

      This article describes novel ways that algae may adjust metabolite trafficking when specific branches of fermentation metabolism are blocked. This rerouting of metabolites allows for continued glycolytic energy production under anoxic conditions, which is critical for the cell’s survival. Mechanisms associated with this reengineering of metabolism are almost completely unexplored.

  30. Sugawara, Kyoko

    1. Open Access
      Lectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular Level
      Yasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou Namba
      Plant Cell Feb 2012, 24 (2) 778-793; DOI: https://doi.org/10.1105/tpc.111.093658

      This work identifies jacalin-type lectin that is responsible for resistance to multiple plant viruses belonging to the genus Potexvirus. The isolation and characterization of this lectin sheds light on a novel resistance machinery to plant viruses.

T

  1. Taconnat, Ludivine

    1. You have accessRestricted Access
      Mutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long Days
      Manon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian Meyer
      Plant Cell Feb 2012, 24 (2) 463-481; DOI: https://doi.org/10.1105/tpc.111.091306

      LST8 is a member of the widely conserved TOR kinase complex. This work shows that LST8 is important for plant growth as well as metabolic and developmental processes linked to changes in light conditions, probably by influencing the activity of the TOR complex.

  2. Takeda, Naoya

    1. You have accessRestricted Access
      Nuclear-Localized and Deregulated Calcium- and Calmodulin-Dependent Protein Kinase Activates Rhizobial and Mycorrhizal Responses in Lotus japonicus
      Naoya Takeda, Takaki Maekawa, Makoto Hayashi
      Plant Cell Feb 2012, 24 (2) 810-822; DOI: https://doi.org/10.1105/tpc.111.091827

      Calcium- and calmodulin-dependent protein kinase (CCaMK) is a protein kinase that is crucial for plant-microbe symbioses. This work shows the importance of nuclear localization of CCaMK for its function in plant symbiotic responses. Moreover, activation of CCaMK in the nucleus induces cytological changes similar to those important for fungal infection, without presence of the symbiotic fungi.

  3. Takenaka, Mizuki

    1. You have accessRestricted Access
      PPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize Growth
      Davide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. Rogowsky
      Plant Cell Feb 2012, 24 (2) 676-691; DOI: https://doi.org/10.1105/tpc.111.091074

      The work identifies maize PPR2263 and Arabidopsis thaliana MEF29 as orthologous mitochondrial RNA editing proteins, the first such orthologs shown to share target sites between a monocot and a dicot. In maize, the loss of editing of the cob transcript by PPR2263 causes the loss of a protein complex in the mitochondrial respiratory chain and ultimately slow growth of mutant plants.

  4. Talke, Ina N.

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

  5. Tang, Ding

    1. You have accessRestricted Access
      Somatic and Reproductive Cell Development in Rice Anther Is Regulated by a Putative Glutaredoxin
      Lilan Hong, Ding Tang, Keming Zhu, Kejian Wang, Ming Li, Zhukuan Cheng
      Plant Cell Feb 2012, 24 (2) 577-588; DOI: https://doi.org/10.1105/tpc.111.093740

      This work demonstrates that plant microsporocytes have specific meiosis initiation machinery by characterizing the rice CC-type glutaredoxin MICROSPORELESS1 (MIL1). The mil1 mutant shows defects both in the meiotic entry of sporogenous cell progenies and in the differentiation of surrounding somatic cell layers.

  6. Tang, Guiliang

    1. You have accessRestricted Access
      Effective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in Arabidopsis
      Jun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang Tang
      Plant Cell Feb 2012, 24 (2) 415-427; DOI: https://doi.org/10.1105/tpc.111.094144

      This work presents a technology for effectively silencing endogenous small RNAs by expressing a small tandem target mimic (STTM) composed of two noncleavable small RNA binding sites linked by an empirically determined spacer. Expression of STTM in Arabidopsis thaliana leads to the specific degradation of endogenous small RNAs by small RNA degrading nuclease family enzymes.

  7. Tang, Xiaoqing

    1. You have accessRestricted Access
      Effective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in Arabidopsis
      Jun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang Tang
      Plant Cell Feb 2012, 24 (2) 415-427; DOI: https://doi.org/10.1105/tpc.111.094144

      This work presents a technology for effectively silencing endogenous small RNAs by expressing a small tandem target mimic (STTM) composed of two noncleavable small RNA binding sites linked by an empirically determined spacer. Expression of STTM in Arabidopsis thaliana leads to the specific degradation of endogenous small RNAs by small RNA degrading nuclease family enzymes.

  8. Tohge, Takayuki

    1. Open Access
      JUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in Arabidopsis
      Anhui Wu, Annapurna Devi Allu, Prashanth Garapati, Hamad Siddiqui, Hakan Dortay, Maria-Inés Zanor, Maria Amparo Asensi-Fabado, Sergi Munné-Bosch, Carla Antonio, Takayuki Tohge, Alisdair R. Fernie, Kerstin Kaufmann, Gang-Ping Xue, Bernd Mueller-Roeber, Salma Balazadeh
      Plant Cell Feb 2012, 24 (2) 482-506; DOI: https://doi.org/10.1105/tpc.111.090894

      Aging in plants is an intricate process that balances vegetative growth with flowering and reproductive success. This work describes the identification of JUNGBRUNNEN1, a NAC transcription factor that regulates this process in Arabidopsis thaliana and additionally affects abiotic stress tolerance by activating expression of the DREB2A transcription factor.

  9. Torti, Stefano

    1. Open Access
      Analysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes Flowering
      Stefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George Coupland
      Plant Cell Feb 2012, 24 (2) 444-462; DOI: https://doi.org/10.1105/tpc.111.092791

      Laser microdissection combined with Solexa sequencing of cDNA was used to analyze the transcriptome of the shoot meristem during the floral transition. Activated genes were placed in pathways downstream or parallel to the inductive signal encoded by FLOWERING LOCUS T.

  10. Trampczynska, Aleksandra

    1. You have accessRestricted Access
      Elevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc Hyperaccumulation
      Ulrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan Clemens
      Plant Cell Feb 2012, 24 (2) 708-723; DOI: https://doi.org/10.1105/tpc.111.095000

      The hyperaccumulation of micronutrients and toxic metals (such as zinc and cadmium, respectively) represents an extreme trait of metallophytes adapted to metal-rich environments. This work demonstrates that elevated production of the metal chelator nicotianamine, specifically in roots of the metallophyte Arabidopsis halleri, is important for efficient root-to-shoot translocation of zinc.

  11. Trevisan, Martine

    1. Open Access
      Nuclear Phytochrome A Signaling Promotes Phototropism in Arabidopsis
      Chitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian Fankhauser
      Plant Cell Feb 2012, 24 (2) 566-576; DOI: https://doi.org/10.1105/tpc.111.095083

      This article shows that the phytochrome A photoreceptor promotes reorientation of the hypocotyl toward blue light (phototropism) by regulating the expression of nuclear genes. It also shows that phytochrome A nuclear signaling events still operate in a mutant where phytochrome A does not significantly accumulate in the nucleus.

  12. Tsugeki, Ryuji

    1. Open Access
      Roles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in Arabidopsis
      Miyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka Okada
      Plant Cell Feb 2012, 24 (2) 519-535; DOI: https://doi.org/10.1105/tpc.111.092858

      This work proposes that the middle domain, which is distinct from the adaxial (upper) and abaxial (lower) domains, plays a key role in coordinating two important processes in early leaf development, blade outgrowth, and adaxial/abaxial patterning, through the actions of the middle domain–specific WOX genes, PRS and WOX1, in concert with the adaxial- and abaxial-specific genes.

U

  1. Uhlworm, Heike

    1. Open Access
      EARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian Clock
      Eva Herrero, Elsebeth Kolmos, Nora Bujdoso, Ye Yuan, Mengmeng Wang, Markus C. Berns, Heike Uhlworm, George Coupland, Reena Saini, Mariusz Jaskolski, Alex Webb, Jorge Gonçalves, Seth J. Davis
      Plant Cell Feb 2012, 24 (2) 428-443; DOI: https://doi.org/10.1105/tpc.111.093807

      ELF3 and ELF4 play pivotal roles in the circadian clock mechanism and in the integration of light signals to the clock, but the molecular basis of ELF3 and ELF4 action is poorly understood. This work uses multidisciplinary approaches to identify and characterize these clock factors as members of a dusk complex that works as a repressor to sustain rhythms of the circadian oscillator.

  2. Unger, Ann-Katrin

    1. Open Access
      Evidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in Chlamydomonas
      André Nordhues, Mark Aurel Schöttler, Ann-Katrin Unger, Stefan Geimer, Stephanie Schönfelder, Stefan Schmollinger, Mark Rütgers, Giovanni Finazzi, Barbara Soppa, Frederik Sommer, Timo Mühlhaus, Thomas Roach, Anja Krieger-Liszkay, Heiko Lokstein, José Luis Crespo, Michael Schroda
      Plant Cell Feb 2012, 24