Table of Contents
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Aichinger, Ernst
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Allu, Annapurna Devi
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Andrès, Céline Besagni
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Andrés, Fernando
- Open AccessAnalysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes FloweringStefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George CouplandPlant 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.
Antonio, Carla
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Asensi-Fabado, Maria Amparo
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Azzopardi, Marianne
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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
Balazadeh, Salma
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Baluška, František
- You have accessRestricted AccessThe Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root PhototropismYinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing LinPlant 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.
Barajas, Jesus F.
- You have accessRestricted AccessThe Arabidopsis Cell Cycle Checkpoint Regulators TANMEI/ALT2 and ATR Mediate the Active Process of Aluminum-Dependent Root Growth InhibitionCynthia D. Nezames, Caroline A. Sjogren, Jesus F. Barajas, Paul B. LarsenPlant 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.
Basset, Gilles J.C.
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Bauer, Stefan
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Bergmann, Sven
- Open AccessNuclear Phytochrome A Signaling Promotes Phototropism in ArabidopsisChitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian FankhauserPlant 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.
Bernal, María
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Berns, Markus C.
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
Borel, Patrick
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Borisjuk, Ljudmilla
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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.
Bouarab, Kamal
- You have accessRestricted AccessThe Conjugated Auxin Indole-3-Acetic Acid–Aspartic Acid Promotes Plant Disease DevelopmentRocío González-Lamothe, Mohamed El Oirdi, Normand Brisson, Kamal BouarabPlant 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.
Brisson, Normand
- You have accessRestricted AccessThe Conjugated Auxin Indole-3-Acetic Acid–Aspartic Acid Promotes Plant Disease DevelopmentRocío González-Lamothe, Mohamed El Oirdi, Normand Brisson, Kamal BouarabPlant 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.
Browse, John
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Bujdoso, Nora
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
Burgert, Ingo
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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
Cai, Kai
- You have accessRestricted AccessA MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicusTao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming ZhangPlant 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.
Caris-Veyrat, Catherine
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Carrari, Fernando
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Casero, David
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Catalanotti, Claudia
- You have accessRestricted AccessAltered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol DehydrogenaseClaudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. GrossmanPlant 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.
Chambrier, Pierre
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Chapman, Kent D.
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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.
Chen, Tao
- You have accessRestricted AccessA MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicusTao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming ZhangPlant 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.
Chen, Xuemei
- You have accessRestricted AccessEffective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in ArabidopsisJun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang TangPlant 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.
Cheng, Zhukuan
- You have accessRestricted AccessSomatic and Reproductive Cell Development in Rice Anther Is Regulated by a Putative GlutaredoxinLilan Hong, Ding Tang, Keming Zhu, Kejian Wang, Ming Li, Zhukuan ChengPlant 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.
Clemens, Stephan
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
Clément, Gilles
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Connolly, Erin L.
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Cooke, Thomas F.
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Coupland, George
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
- Open AccessAnalysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes FloweringStefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George CouplandPlant 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.
Crespo, José Luis
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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
Dauzat, Myriam
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Davis, Seth J.
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
Dedieu, Annick
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Deinlein, Ulrich
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
DellaPenna, Dean
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
DePew, Cody L.
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Dobrenel, Thomas
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Dodani, Sheel C.
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Dortay, Hakan
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Dubini, Alexandra
- You have accessRestricted AccessAltered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol DehydrogenaseClaudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. GrossmanPlant 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
Eckardt, Nancy A.
- You have accessRestricted AccessA New Tool for Investigating Small RNA FunctionNancy A. EckardtPlant Cell Feb 2012, 24 (2) 372; DOI: https://doi.org/10.1105/tpc.112.240211
Ehrhardt, David W.
- You have accessRestricted AccessNew Technologies for 21st Century Plant ScienceDavid W. Ehrhardt, Wolf B. FrommerPlant Cell Feb 2012, 24 (2) 374-394; DOI: https://doi.org/10.1105/tpc.111.093302
El Oirdi, Mohamed
- You have accessRestricted AccessThe Conjugated Auxin Indole-3-Acetic Acid–Aspartic Acid Promotes Plant Disease DevelopmentRocío González-Lamothe, Mohamed El Oirdi, Normand Brisson, Kamal BouarabPlant 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
Fankhauser, Christian
- Open AccessNuclear Phytochrome A Signaling Promotes Phototropism in ArabidopsisChitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian FankhauserPlant 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.
Fernie, Alisdair R.
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Figueroa, Pablo
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Finazzi, Giovanni
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Fitzpatrick, Teresa B.
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Fornara, Fabio
- Open AccessAnalysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes FloweringStefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George CouplandPlant 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.
Fraser, Paul D.
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Frommer, Wolf B.
- You have accessRestricted AccessNew Technologies for 21st Century Plant ScienceDavid W. Ehrhardt, Wolf B. FrommerPlant Cell Feb 2012, 24 (2) 374-394; DOI: https://doi.org/10.1105/tpc.111.093302
Fuchs, Johannes
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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
Garapati, Prashanth
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Geimer, Stefan
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Gendrot, Ghislaine
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Genoud, Thierry
- Open AccessNuclear Phytochrome A Signaling Promotes Phototropism in ArabidopsisChitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian FankhauserPlant 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.
Göbel, Ulrike
- Open AccessAnalysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes FloweringStefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George CouplandPlant 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.
Gonçalves, Jorge
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
González-Lamothe, Rocío
- You have accessRestricted AccessThe Conjugated Auxin Indole-3-Acetic Acid–Aspartic Acid Promotes Plant Disease DevelopmentRocío González-Lamothe, Mohamed El Oirdi, Normand Brisson, Kamal BouarabPlant 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.
Gou, Honglan
- You have accessRestricted AccessA MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicusTao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming ZhangPlant 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.
Grande, Arne
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Grossman, Arthur R.
- You have accessRestricted AccessAltered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol DehydrogenaseClaudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. GrossmanPlant 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.
Gu, Yiyou
- You have accessRestricted AccessEffective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in ArabidopsisJun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang TangPlant 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.
Gügel, Irene L.
- You have accessRestricted AccessInitial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in SynechocystisAnna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg NickelsenPlant 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.
Guyon, Virginie
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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
Han, Su-Hyun
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Hansen, Thomas H.
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
Hao, Huaiqing
- You have accessRestricted AccessThe Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root PhototropismYinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing LinPlant 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.
Hashimoto, Masayoshi
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Hauser, Marie-Theres
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Hayashi, Makoto
- You have accessRestricted AccessNuclear-Localized and Deregulated Calcium- and Calmodulin-Dependent Protein Kinase Activates Rhizobial and Mycorrhizal Responses in Lotus japonicusNaoya Takeda, Takaki Maekawa, Makoto HayashiPlant 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.
Haydon, Michael J.
- You have accessRestricted AccessVacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in ArabidopsisMichael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute KrämerPlant 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.
Hell, Rüdiger
- You have accessRestricted AccessVacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in ArabidopsisMichael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute KrämerPlant 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.
Hellmann, Hanjo
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Hématy, Kian
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Herrero, Eva
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
Hersch, Micha
- Open AccessNuclear Phytochrome A Signaling Promotes Phototropism in ArabidopsisChitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian FankhauserPlant 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.
Heurtevin, Laure
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Hilger, Daniel
- You have accessRestricted AccessInitial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in SynechocystisAnna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg NickelsenPlant 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.
Hillmer, Stefan
- You have accessRestricted AccessVacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in ArabidopsisMichael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute KrämerPlant 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.
Hiltbrunner, Andreas
- Open AccessNuclear Phytochrome A Signaling Promotes Phototropism in ArabidopsisChitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian FankhauserPlant 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.
Himeno, Misako
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Hofmann, Nancy R.
- You have accessRestricted AccessNicotianamine in Zinc and Iron HomeostasisNancy R. HofmannPlant Cell Feb 2012, 24 (2) 373; DOI: https://doi.org/10.1105/tpc.112.240212
Hong, Lilan
- You have accessRestricted AccessSomatic and Reproductive Cell Development in Rice Anther Is Regulated by a Putative GlutaredoxinLilan Hong, Ding Tang, Keming Zhu, Kejian Wang, Ming Li, Zhukuan ChengPlant 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.
Hong, Zonglie
- You have accessRestricted AccessA MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicusTao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming ZhangPlant 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.
Horn, Patrick J.
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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.
Hörtensteiner, Stefan
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Howe, Gregg A.
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Huijser, Peter
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Husted, Søren
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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
Ibáñez, Ana Belén
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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
Jasik, Jan
- You have accessRestricted AccessThe Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root PhototropismYinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing LinPlant 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.
Jaskolski, Mariusz
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
Jia, Xiaoyun
- You have accessRestricted AccessEffective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in ArabidopsisJun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang TangPlant 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.
Jung, Heinrich
- You have accessRestricted AccessInitial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in SynechocystisAnna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg NickelsenPlant 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
Kami, Chitose
- Open AccessNuclear Phytochrome A Signaling Promotes Phototropism in ArabidopsisChitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian FankhauserPlant 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.
Kang, Wenjun
- You have accessRestricted AccessEffective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in ArabidopsisJun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang TangPlant 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.
Katsir, Leron
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Kaufmann, Kerstin
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Kawachi, Miki
- You have accessRestricted AccessVacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in ArabidopsisMichael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute KrämerPlant 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.
Ke, Danxia
- You have accessRestricted AccessA MAP Kinase Kinase Interacts with SymRK and Regulates Nodule Organogenesis in Lotus japonicusTao Chen, Hui Zhu, Danxia Ke, Kai Cai, Chao Wang, Honglan Gou, Zonglie Hong, Zhongming ZhangPlant 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.
Kessler, Felix
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Knoll, Daniela
- Open AccessAnalysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes FloweringStefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George CouplandPlant 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.
Kogel, Karl-Heinz
- You have accessRestricted AccessThe Mutualistic Fungus Piriformospora indica Colonizes Arabidopsis Roots by Inducing an Endoplasmic Reticulum Stress–Triggered Caspase-Dependent Cell DeathXiaoyu Qiang, Bernd Zechmann, Marco U. Reitz, Karl-Heinz Kogel, Patrick SchäferPlant 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.
Kolmos, Elsebeth
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
Komatsu, Ken
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Konlechner, Cornelia
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Korte, Andrew R.
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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.
Krämer, Ute
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
- You have accessRestricted AccessVacuolar Nicotianamine Has Critical and Distinct Roles under Iron Deficiency and for Zinc Sequestration in ArabidopsisMichael J. Haydon, Miki Kawachi, Markus Wirtz, Stefan Hillmer, Rüdiger Hell, Ute KrämerPlant 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.
Krieger-Liszkay, Anja
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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
Larsen, Paul B.
- You have accessRestricted AccessThe Arabidopsis Cell Cycle Checkpoint Regulators TANMEI/ALT2 and ATR Mediate the Active Process of Aluminum-Dependent Root Growth InhibitionCynthia D. Nezames, Caroline A. Sjogren, Jesus F. Barajas, Paul B. LarsenPlant 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.
Laux, Thomas
- Open AccessRoles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in ArabidopsisMiyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka OkadaPlant 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.
Lee, Byoung-Doo
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Lee, Young-Jin
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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.
Li, Ming
- You have accessRestricted AccessSomatic and Reproductive Cell Development in Rice Anther Is Regulated by a Putative GlutaredoxinLilan Hong, Ding Tang, Keming Zhu, Kejian Wang, Ming Li, Zhukuan ChengPlant 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.
Lin, Jinxing
- You have accessRestricted AccessThe Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root PhototropismYinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing LinPlant 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.
Lokstein, Heiko
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Love, Ebony
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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
Mach, Jennifer
- You have accessRestricted AccessMass Spectrometry Imaging with Single-Cell Resolution: Spatial Distribution of Lipids in Cotton SeedsJennifer MachPlant Cell Feb 2012, 24 (2) 371; DOI: https://doi.org/10.1105/tpc.112.240210
Maejima, Kensaku
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Maekawa, Takaki
- You have accessRestricted AccessNuclear-Localized and Deregulated Calcium- and Calmodulin-Dependent Protein Kinase Activates Rhizobial and Mycorrhizal Responses in Lotus japonicusNaoya Takeda, Takaki Maekawa, Makoto HayashiPlant 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.
Magneschi, Leonardo
- You have accessRestricted AccessAltered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol DehydrogenaseClaudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. GrossmanPlant 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.
Mancuso, Stefano
- You have accessRestricted AccessThe Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root PhototropismYinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing LinPlant 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.
Marchive, Chloé
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Martin-Magniette, Marie-Laure
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Matsumoto, Noritaka
- Open AccessRoles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in ArabidopsisMiyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka OkadaPlant 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.
Mbelo, Sylvie
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Menzel, Diedrik
- You have accessRestricted AccessThe Signal Transducer NPH3 Integrates the Phototropin1 Photosensor with PIN2-Based Polar Auxin Transport in Arabidopsis Root PhototropismYinglang Wan, Jan Jasik, Li Wang, Huaiqing Hao, Dieter Volkmann, Diedrik Menzel, Stefano Mancuso, František Baluška, Jinxing LinPlant 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.
Merchant, Sabeeha S.
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Meyer, Christian
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Minato, Nami
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Miura, Chihiro
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Moreau, Manon
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Moreno, Javier E.
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Mueller-Roeber, Bernd
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Mühlhaus, Timo
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Munné-Bosch, Sergi
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Mus, Florence
- You have accessRestricted AccessAltered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol DehydrogenaseClaudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. GrossmanPlant 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
Nakata, Miyuki
- Open AccessRoles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in ArabidopsisMiyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka OkadaPlant 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.
Namba, Shigetou
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Neogi, Purnima B.
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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.
Neriya, Yutaro
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Neumetzler, Lutz
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Nezames, Cynthia D.
- You have accessRestricted AccessThe Arabidopsis Cell Cycle Checkpoint Regulators TANMEI/ALT2 and ATR Mediate the Active Process of Aluminum-Dependent Root Growth InhibitionCynthia D. Nezames, Caroline A. Sjogren, Jesus F. Barajas, Paul B. LarsenPlant 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.
Nickelsen, Jörg
- You have accessRestricted AccessInitial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in SynechocystisAnna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg NickelsenPlant 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.
Nordhues, André
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Nordström, Karl
- Open AccessAnalysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes FloweringStefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George CouplandPlant 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
Okada, Kiyotaka
- Open AccessRoles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in ArabidopsisMiyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka OkadaPlant 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.
Okano, Yukari
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Osorio, Sonia
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
P
Paek, Nam-Chon
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Pan, Shangjin
- You have accessRestricted AccessEffective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in ArabidopsisJun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang TangPlant 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.
Park, So-Yon
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Pellegrini, Matteo
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Persson, Staffan
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Posewitz, Matthew C.
- You have accessRestricted AccessAltered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol DehydrogenaseClaudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. GrossmanPlant 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
Qiang, Xiaoyu
- You have accessRestricted AccessThe Mutualistic Fungus Piriformospora indica Colonizes Arabidopsis Roots by Inducing an Endoplasmic Reticulum Stress–Triggered Caspase-Dependent Cell DeathXiaoyu Qiang, Bernd Zechmann, Marco U. Reitz, Karl-Heinz Kogel, Patrick SchäferPlant 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
Reitz, Marco U.
- You have accessRestricted AccessThe Mutualistic Fungus Piriformospora indica Colonizes Arabidopsis Roots by Inducing an Endoplasmic Reticulum Stress–Triggered Caspase-Dependent Cell DeathXiaoyu Qiang, Bernd Zechmann, Marco U. Reitz, Karl-Heinz Kogel, Patrick SchäferPlant 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.
Rengstl, Birgit
- You have accessRestricted AccessInitial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in SynechocystisAnna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg NickelsenPlant 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.
Renne, Charlotte
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Renou, Jean-Pierre
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Rensch, Stefan
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
Rikirsch, Enno
- Open AccessRoles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in ArabidopsisMiyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka OkadaPlant 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.
Roach, Thomas
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Robaglia, Christophe
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Rogowsky, Peter M.
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Rothan, Christophe
- You have accessRestricted AccessVitamin 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. FerniePlant Cell Feb 2012, 24 (2) 395-414; DOI: https://doi.org/10.1105/tpc.111.093120
Rüggeberg, Markus
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Rütgers, Mark
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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
Saini, Reena
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
Sakuraba, Yasuhito
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Sampathkumar, Arun
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Sánchez-Rodríguez, Clara
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Saxe, Friederike
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Schäfer, Patrick
- You have accessRestricted AccessThe Mutualistic Fungus Piriformospora indica Colonizes Arabidopsis Roots by Inducing an Endoplasmic Reticulum Stress–Triggered Caspase-Dependent Cell DeathXiaoyu Qiang, Bernd Zechmann, Marco U. Reitz, Karl-Heinz Kogel, Patrick SchäferPlant 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.
Schelbert, Silvia
- You have accessRestricted AccessSTAY-GREEN and Chlorophyll Catabolic Enzymes Interact at Light-Harvesting Complex II for Chlorophyll Detoxification during Leaf Senescence in ArabidopsisYasuhito Sakuraba, Silvia Schelbert, So-Yon Park, Su-Hyun Han, Byoung-Doo Lee, Céline Besagni Andrès, Felix Kessler, Stefan Hörtensteiner, Nam-Chon PaekPlant 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.
Schjoerring, Jan K.
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
Schmidt, Holger
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
Schmollinger, Stefan
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Schönfelder, Stephanie
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Schoof, Heiko
- Open AccessAnalysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes FloweringStefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George CouplandPlant 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.
Schöttler, Mark Aurel
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Schroda, Michael
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Seibert, Michael
- You have accessRestricted AccessAltered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol DehydrogenaseClaudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. GrossmanPlant 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.
Sheard, Laura B.
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Shiraishi, Takuya
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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.
Shulaev, Vladimir
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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.
Shyu, Christine
- You have accessRestricted AccessJAZ8 Lacks a Canonical Degron and Has an EAR Motif That Mediates Transcriptional Repression of Jasmonate Responses in ArabidopsisChristine Shyu, Pablo Figueroa, Cody L. DePew, Thomas F. Cooke, Laura B. Sheard, Javier E. Moreno, Leron Katsir, Ning Zheng, John Browse, Gregg A. HowePlant 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.
Siddiqui, Hamad
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Singh, Vasantika
- You have accessRestricted AccessTranscriptome Sequencing Identifies SPL7-Regulated Copper Acquisition Genes FRO4/FRO5 and the Copper Dependence of Iron Homeostasis in ArabidopsisMaría 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 KrämerPlant 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.
Sjogren, Caroline A.
- You have accessRestricted AccessThe Arabidopsis Cell Cycle Checkpoint Regulators TANMEI/ALT2 and ATR Mediate the Active Process of Aluminum-Dependent Root Growth InhibitionCynthia D. Nezames, Caroline A. Sjogren, Jesus F. Barajas, Paul B. LarsenPlant 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.
Somerville, Chris
- Open AccessCHITINASE-LIKE1/POM-POM1 and Its Homolog CTL2 Are Glucan-Interacting Proteins Important for Cellulose Biosynthesis in ArabidopsisClara 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 PerssonPlant 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.
Sommer, Frederik
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Soppa, Barbara
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant 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.
Sosso, Davide
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Stengel, Anna
- You have accessRestricted AccessInitial Steps of Photosystem II de Novo Assembly and Preloading with Manganese Take Place in Biogenesis Centers in SynechocystisAnna Stengel, Irene L. Gügel, Daniel Hilger, Birgit Rengstl, Heinrich Jung, Jörg NickelsenPlant 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.
Strupat, Kerstin
- Open AccessSpatial Mapping of Lipids at Cellular Resolution in Embryos of CottonPatrick J. Horn, Andrew R. Korte, Purnima B. Neogi, Ebony Love, Johannes Fuchs, Kerstin Strupat, Ljudmilla Borisjuk, Vladimir Shulaev, Young-Jin Lee, Kent D. ChapmanPlant 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.
Subramanian, Venkataramanan
- You have accessRestricted AccessAltered Fermentative Metabolism in Chlamydomonas reinhardtii Mutants Lacking Pyruvate Formate Lyase and Both Pyruvate Formate Lyase and Alcohol DehydrogenaseClaudia Catalanotti, Alexandra Dubini, Venkataramanan Subramanian, Wenqiang Yang, Leonardo Magneschi, Florence Mus, Michael Seibert, Matthew C. Posewitz, Arthur R. GrossmanPlant 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.
Sugawara, Kyoko
- Open AccessLectin-Mediated Resistance Impairs Plant Virus Infection at the Cellular LevelYasuyuki Yamaji, Kensaku Maejima, Ken Komatsu, Takuya Shiraishi, Yukari Okano, Misako Himeno, Kyoko Sugawara, Yutaro Neriya, Nami Minato, Chihiro Miura, Masayoshi Hashimoto, Shigetou NambaPlant 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
Taconnat, Ludivine
- You have accessRestricted AccessMutations in the Arabidopsis Homolog of LST8/GβL, a Partner of the Target of Rapamycin Kinase, Impair Plant Growth, Flowering, and Metabolic Adaptation to Long DaysManon Moreau, Marianne Azzopardi, Gilles Clément, Thomas Dobrenel, Chloé Marchive, Charlotte Renne, Marie-Laure Martin-Magniette, Ludivine Taconnat, Jean-Pierre Renou, Christophe Robaglia, Christian MeyerPlant 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.
Takeda, Naoya
- You have accessRestricted AccessNuclear-Localized and Deregulated Calcium- and Calmodulin-Dependent Protein Kinase Activates Rhizobial and Mycorrhizal Responses in Lotus japonicusNaoya Takeda, Takaki Maekawa, Makoto HayashiPlant 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.
Takenaka, Mizuki
- You have accessRestricted AccessPPR2263, a DYW-Subgroup Pentatricopeptide Repeat Protein, Is Required for Mitochondrial nad5 and cob Transcript Editing, Mitochondrion Biogenesis, and Maize GrowthDavide Sosso, Sylvie Mbelo, Vanessa Vernoud, Ghislaine Gendrot, Annick Dedieu, Pierre Chambrier, Myriam Dauzat, Laure Heurtevin, Virginie Guyon, Mizuki Takenaka, Peter M. RogowskyPlant 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.
Talke, Ina N.
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
Tang, Ding
- You have accessRestricted AccessSomatic and Reproductive Cell Development in Rice Anther Is Regulated by a Putative GlutaredoxinLilan Hong, Ding Tang, Keming Zhu, Kejian Wang, Ming Li, Zhukuan ChengPlant 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.
Tang, Guiliang
- You have accessRestricted AccessEffective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in ArabidopsisJun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang TangPlant 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.
Tang, Xiaoqing
- You have accessRestricted AccessEffective Small RNA Destruction by the Expression of a Short Tandem Target Mimic in ArabidopsisJun Yan, Yiyou Gu, Xiaoyun Jia, Wenjun Kang, Shangjin Pan, Xiaoqing Tang, Xuemei Chen, Guiliang TangPlant 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.
Tohge, Takayuki
- Open AccessJUNGBRUNNEN1, a Reactive Oxygen Species–Responsive NAC Transcription Factor, Regulates Longevity in ArabidopsisAnhui 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 BalazadehPlant 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.
Torti, Stefano
- Open AccessAnalysis of the Arabidopsis Shoot Meristem Transcriptome during Floral Transition Identifies Distinct Regulatory Patterns and a Leucine-Rich Repeat Protein That Promotes FloweringStefano Torti, Fabio Fornara, Coral Vincent, Fernando Andrés, Karl Nordström, Ulrike Göbel, Daniela Knoll, Heiko Schoof, George CouplandPlant 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.
Trampczynska, Aleksandra
- You have accessRestricted AccessElevated Nicotianamine Levels in Arabidopsis halleri Roots Play a Key Role in Zinc HyperaccumulationUlrich Deinlein, Michael Weber, Holger Schmidt, Stefan Rensch, Aleksandra Trampczynska, Thomas H. Hansen, Søren Husted, Jan K. Schjoerring, Ina N. Talke, Ute Krämer, Stephan ClemensPlant 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.
Trevisan, Martine
- Open AccessNuclear Phytochrome A Signaling Promotes Phototropism in ArabidopsisChitose Kami, Micha Hersch, Martine Trevisan, Thierry Genoud, Andreas Hiltbrunner, Sven Bergmann, Christian FankhauserPlant 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.
Tsugeki, Ryuji
- Open AccessRoles of the Middle Domain–Specific WUSCHEL-RELATED HOMEOBOX Genes in Early Development of Leaves in ArabidopsisMiyuki Nakata, Noritaka Matsumoto, Ryuji Tsugeki, Enno Rikirsch, Thomas Laux, Kiyotaka OkadaPlant 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
Uhlworm, Heike
- Open AccessEARLY FLOWERING4 Recruitment of EARLY FLOWERING3 in the Nucleus Sustains the Arabidopsis Circadian ClockEva 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. DavisPlant 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.
Unger, Ann-Katrin
- Open AccessEvidence for a Role of VIPP1 in the Structural Organization of the Photosynthetic Apparatus in ChlamydomonasAndré 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 SchrodaPlant Cell Feb 2012, 24