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Table of Contents

The Plant Cell Online: 26 (1)
Jan 2014

IN BRIEF

  • <em>The Plant Cell</em> Reviews Aspects of Photobiology: It’s a Matter of Stop ’n Go
    You have accessRestricted Access
    The Plant Cell Reviews Aspects of Photobiology: It’s a Matter of Stop ’n Go
    Nancy A. Eckardt
    Plant Cell Jan 2014, 26 (1) 1; DOI: https://doi.org/10.1105/tpc.114.123026
  • Geminivirus Vectors Deliver Reagents for Plant Genome Engineering
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    Geminivirus Vectors Deliver Reagents for Plant Genome Engineering
    Jennifer Mach
    Plant Cell Jan 2014, 26 (1) 2; DOI: https://doi.org/10.1105/tpc.114.122606
  • En Garde! Inhibition of an Actin Depolymerizing Factor Activates Immune Responses during Plant–Microbe Interactions
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    En Garde! Inhibition of an Actin Depolymerizing Factor Activates Immune Responses during Plant–Microbe Interactions
    Kathleen L. Farquharson
    Plant Cell Jan 2014, 26 (1) 3; DOI: https://doi.org/10.1105/tpc.114.123174
  • Getting in Shape? Leaves Work It Out with KANADI1
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    Getting in Shape? Leaves Work It Out with KANADI1
    Jennifer Mach
    Plant Cell Jan 2014, 26 (1) 4; DOI: https://doi.org/10.1105/tpc.114.123018

REVIEWS

  • Mathematical Models Light Up Plant Signaling
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    Mathematical Models Light Up Plant Signaling
    Yin Hoon Chew, Robert W. Smith, Harriet J. Jones, Daniel D. Seaton, Ramon Grima, Karen J. Halliday
    Plant Cell Jan 2014, 26 (1) 5-20; DOI: https://doi.org/10.1105/tpc.113.120006
  • The UV-B Photoreceptor UVR8: From Structure to Physiology
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    The UV-B Photoreceptor UVR8: From Structure to Physiology
    Gareth I. Jenkins
    Plant Cell Jan 2014, 26 (1) 21-37; DOI: https://doi.org/10.1105/tpc.113.119446
  • Phototropism: Growing towards an Understanding of Plant Movement
    Open Access
    Phototropism: Growing towards an Understanding of Plant Movement
    Emmanuel Liscum, Scott K. Askinosie, Daniel L. Leuchtman, Johanna Morrow, Kyle T. Willenburg, Diana Roberts Coats
    Plant Cell Jan 2014, 26 (1) 38-55; DOI: https://doi.org/10.1105/tpc.113.119727
  • PIFs: Systems Integrators in Plant Development
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    PIFs: Systems Integrators in Plant Development
    Pablo Leivar, Elena Monte
    Plant Cell Jan 2014, 26 (1) 56-78; DOI: https://doi.org/10.1105/tpc.113.120857
  • Multiple Layers of Posttranslational Regulation Refine Circadian Clock Activity in <em>Arabidopsis</em>
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    Multiple Layers of Posttranslational Regulation Refine Circadian Clock Activity in Arabidopsis
    Pil Joon Seo, Paloma Mas
    Plant Cell Jan 2014, 26 (1) 79-87; DOI: https://doi.org/10.1105/tpc.113.119842

LARGE-SCALE BIOLOGY ARTICLES

  • Transcriptional Regulation of Fruit Ripening by Tomato FRUITFULL Homologs and Associated MADS Box Proteins
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    Transcriptional Regulation of Fruit Ripening by Tomato FRUITFULL Homologs and Associated MADS Box Proteins
    Masaki Fujisawa, Yoko Shima, Hiroyuki Nakagawa, Mamiko Kitagawa, Junji Kimbara, Toshitsugu Nakano, Takafumi Kasumi, Yasuhiro Ito
    Plant Cell Jan 2014, 26 (1) 89-101; DOI: https://doi.org/10.1105/tpc.113.119453

    This work identifies direct targets of the MADS box transcription factors FUL1 and FUL2, key regulators of tomato fruit ripening, finding that FUL1 and FUL2 act in the transcriptional regulation of many aspects of ripening, including ripening-related ethylene production and lycopene accumulation, cooperatively with or independently of the MADS box ripening regulators RIN and TAGL1.

  • In Vivo Mapping of <em>Arabidopsis</em> Scaffold/Matrix Attachment Regions Reveals Link to Nucleosome-Disfavoring Poly(dA:dT) Tracts
    Open Access
    In Vivo Mapping of Arabidopsis Scaffold/Matrix Attachment Regions Reveals Link to Nucleosome-Disfavoring Poly(dA:dT) Tracts
    Pete E. Pascuzzi, Miguel A. Flores-Vergara, Tae-Jin Lee, Bryon Sosinski, Matthew W. Vaughn, Linda Hanley-Bowdoin, William F. Thompson, George C. Allen
    Plant Cell Jan 2014, 26 (1) 102-120; DOI: https://doi.org/10.1105/tpc.113.121194

    This work uses tiling microarrays to map S/MARs on Arabidopsis chromosome 4. S/MARs were found to be spaced more closely than in the large plant and animal genomes studied to date and preferentially enriched in poly(dA:dT) tracts, sequences that resist nucleosome formation. Most S/MARs occur near gene transcription start sites, and these genes show an increased probability of expression.

  • Insights into the Maize Pan-Genome and Pan-Transcriptome
    Open Access
    Insights into the Maize Pan-Genome and Pan-Transcriptome
    Candice N. Hirsch, Jillian M. Foerster, James M. Johnson, Rajandeep S. Sekhon, German Muttoni, Brieanne Vaillancourt, Francisco Peñagaricano, Erika Lindquist, Mary Ann Pedraza, Kerrie Barry, Natalia de Leon, Shawn M. Kaeppler, C. Robin Buell
    Plant Cell Jan 2014, 26 (1) 121-135; DOI: https://doi.org/10.1105/tpc.113.119982

    Transcriptome sequencing of diverse maize inbreds provided insights into the nature of the maize pan-genome, including identification of 8681 loci absent in the B73 reference sequence. Genome-wide association studies using single nucleotide polymorphisms and transcript abundance variants in the maize pan-genome identified loci associated with traits important for fitness and adaptation.

  • Extensive Translational Regulation of Gene Expression in an Allopolyploid (<em>Glycine dolichocarpa</em>)
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    Extensive Translational Regulation of Gene Expression in an Allopolyploid (Glycine dolichocarpa)
    Jeremy E. Coate, Haim Bar, Jeff J. Doyle
    Plant Cell Jan 2014, 26 (1) 136-150; DOI: https://doi.org/10.1105/tpc.113.119966

    This work shows that translational regulation of gene expression in a recently formed allopolyploid is widespread, reduces transcriptional differences between the polyploid and its diploid progenitors, and correlates with the retention of genes from an older polyploidy event. These findings suggest that translational regulation is significant in both early and long-term responses to polyploidy.

RESEARCH ARTICLES

  • DNA Replicons for Plant Genome Engineering
    Open Access
    DNA Replicons for Plant Genome Engineering
    Nicholas J. Baltes, Javier Gil-Humanes, Tomas Cermak, Paul A. Atkins, Daniel F. Voytas
    Plant Cell Jan 2014, 26 (1) 151-163; DOI: https://doi.org/10.1105/tpc.113.119792

    The ability to precisely modify DNA in cells offers great opportunities for basic and applied research, yet it remains difficult to achieve for most plant species. This work explores the use of geminiviruses for genome engineering. Properties of geminiviruses, including extrachromosomal replication and pleiotropic activity of virus proteins, enabled highly efficient editing of the tobacco genome.

  • A Wheat <em>SIMILAR TO RCD-ONE</em> Gene Enhances Seedling Growth and Abiotic Stress Resistance by Modulating Redox Homeostasis and Maintaining Genomic Integrity
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    A Wheat SIMILAR TO RCD-ONE Gene Enhances Seedling Growth and Abiotic Stress Resistance by Modulating Redox Homeostasis and Maintaining Genomic Integrity
    Shuantao Liu, Shuwei Liu, Mei Wang, Tiandi Wei, Chen Meng, Meng Wang, Guangmin Xia
    Plant Cell Jan 2014, 26 (1) 164-180; DOI: https://doi.org/10.1105/tpc.113.118687

    This work reports that sro1 (for allelic variation of a wheat SRO gene SRO1) showed higher poly(ADP ribose) polymerase activity than SRO1 due to two residue substitutions and that this protein is involved in both seedling vigor and tolerance to abiotic stress by modulating redox homoeostasis and maintaining genome stability.

  • The <em>BOY NAMED SUE</em> Quantitative Trait Locus Confers Increased Meiotic Stability to an Adapted Natural Allopolyploid of <em>Arabidopsis</em>
    Open Access
    The BOY NAMED SUE Quantitative Trait Locus Confers Increased Meiotic Stability to an Adapted Natural Allopolyploid of Arabidopsis
    Isabelle M. Henry, Brian P. Dilkes, Anand Tyagi, Jian Gao, Brian Christensen, Luca Comai
    Plant Cell Jan 2014, 26 (1) 181-194; DOI: https://doi.org/10.1105/tpc.113.120626

    This work uses genomic sequencing and microscopy to examine the differences in meiotic stability and fertility between synthetic and natural allopolyploids of Arabidopsis thaliana and A. arenosa. The authors find that the natural allopolyploid A. suecica and its parents have very similar genomic architecture and identify a single locus from A. suecica associated with increased meiotic stability.

  • The Histone Deacetylase Inhibitor Trichostatin A Promotes Totipotency in the Male Gametophyte
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    The Histone Deacetylase Inhibitor Trichostatin A Promotes Totipotency in the Male Gametophyte
    Hui Li, Mercedes Soriano, Jan Cordewener, Jose M. Muiño, Tjitske Riksen, Hiroyuki Fukuoka, Gerco C. Angenent, Kim Boutilier
    Plant Cell Jan 2014, 26 (1) 195-209; DOI: https://doi.org/10.1105/tpc.113.116491

    Immature pollen of many species can be reprogrammed to form haploid embryos in vitro in response to a stress treatment. This work, in Brassica napus and Arabidopsis thaliana, showed that this stress-induced switch in developmental pathways relies on the inhibition of histone deacetylase activity.

  • ANGUSTIFOLIA3 Binds to SWI/SNF Chromatin Remodeling Complexes to Regulate Transcription during <em>Arabidopsis</em> Leaf Development
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    ANGUSTIFOLIA3 Binds to SWI/SNF Chromatin Remodeling Complexes to Regulate Transcription during Arabidopsis Leaf Development
    Liesbeth Vercruyssen, Aurine Verkest, Nathalie Gonzalez, Ken S. Heyndrickx, Dominique Eeckhout, Soon-Ki Han, Teddy Jégu, Rafal Archacki, Jelle Van Leene, Megan Andriankaja, Stefanie De Bodt, Thomas Abeel, Frederik Coppens, Stijn Dhondt, Liesbeth De Milde, Mattias Vermeersch, Katrien Maleux, Kris Gevaert, Andrzej Jerzmanowski, Moussa Benhamed, Doris Wagner, Klaas Vandepoele, Geert De Jaeger, Dirk Inzé
    Plant Cell Jan 2014, 26 (1) 210-229; DOI: https://doi.org/10.1105/tpc.113.115907

    The transcriptional coactivator ANGUSTIFOLIA3 (AN3) stimulates cell division during Arabidopsis leaf development. It is shown that AN3 associates with SWI/SNF chromatin remodeling complexes to regulate the expression of important downstream transcription factors and that the module SWI/SNF-AN3 is a major player in the transition from cell division to cell expansion in developing leaves.

  • <em>Arabidopsis</em> WRKY57 Functions as a Node of Convergence for Jasmonic Acid– and Auxin-Mediated Signaling in Jasmonic Acid–Induced Leaf Senescence
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    Arabidopsis WRKY57 Functions as a Node of Convergence for Jasmonic Acid– and Auxin-Mediated Signaling in Jasmonic Acid–Induced Leaf Senescence
    Yanjuan Jiang, Gang Liang, Shizhuo Yang, Diqiu Yu
    Plant Cell Jan 2014, 26 (1) 230-245; DOI: https://doi.org/10.1105/tpc.113.117838

    This work demonstrates that WRKY57 functions in the crosstalk between jasmonic acid (JA)– and auxin-mediated signaling during JA-induced leaf senescence. The findings provide a mechanistic insight into how JA-induced leaf senescence is antagonized by auxin via WRKY57.

  • <em>Arabidopsis</em> KANADI1 Acts as a Transcriptional Repressor by Interacting with a Specific <em>cis</em>-Element and Regulates Auxin Biosynthesis, Transport, and Signaling in Opposition to HD-ZIPIII Factors
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    Arabidopsis KANADI1 Acts as a Transcriptional Repressor by Interacting with a Specific cis-Element and Regulates Auxin Biosynthesis, Transport, and Signaling in Opposition to HD-ZIPIII Factors
    Tengbo Huang, Yaël Harrar, Changfa Lin, Brenda Reinhart, Nicole R. Newell, Franklin Talavera-Rauh, Samuel A. Hokin, M. Kathryn Barton, Randall A. Kerstetter
    Plant Cell Jan 2014, 26 (1) 246-262; DOI: https://doi.org/10.1105/tpc.113.111526

    This work examined the function of the GARP family transcription factor KANADI1 (KAN1), finding that KAN1 binds a GNATA(A/T) cis-motif to repress transcription of target genes involved in auxin biosynthesis, auxin transport, and the auxin response. KAN1 affects auxin responses in opposition to the HD-ZIPIII transcription factor REVOLUTA.

  • Interaction between MYC2 and ETHYLENE INSENSITIVE3 Modulates Antagonism between Jasmonate and Ethylene Signaling in <em>Arabidopsis</em>
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    Interaction between MYC2 and ETHYLENE INSENSITIVE3 Modulates Antagonism between Jasmonate and Ethylene Signaling in Arabidopsis
    Susheng Song, Huang Huang, Hua Gao, Jiaojiao Wang, Dewei Wu, Xili Liu, Shuhua Yang, Qingzhe Zhai, Chuanyou Li, Tiancong Qi, Daoxin Xie
    Plant Cell Jan 2014, 26 (1) 263-279; DOI: https://doi.org/10.1105/tpc.113.120394

    The authors reveal a mechanism underlying jasmonate (JA) and ethylene (ET) antagonism: Interaction between the JA-activated transcription factor MYC2 and the ET-stabilized transcription factor EIN3, reciprocally repressing their transcriptional activity, modulates the antagonistic actions of JA and ET in regulating apical hook curvature, wound-responsive gene expression, and defense against insect attack.

  • AUXIN BINDING PROTEIN1 Links Cell Wall Remodeling, Auxin Signaling, and Cell Expansion in <em>Arabidopsis</em>
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    AUXIN BINDING PROTEIN1 Links Cell Wall Remodeling, Auxin Signaling, and Cell Expansion in Arabidopsis
    Sébastien Paque, Grégory Mouille, Laurie Grandont, David Alabadí, Cyril Gaertner, Arnaud Goyallon, Philippe Muller, Catherine Primard-Brisset, Rodnay Sormani, Miguel A. Blázquez, Catherine Perrot-Rechenmann
    Plant Cell Jan 2014, 26 (1) 280-295; DOI: https://doi.org/10.1105/tpc.113.120048

    This work examines the consequences of inactivation of the auxin receptor AUXIN BINDING PROTEIN1 and identifies alterations in the transcriptome, cell expansion, cell wall remodeling, and xyloglucan structure. It also reveals the importance of modifications of xyloglucan structure in the cell wall for cell expansion.

  • The <em>Arabidopsis</em> SIAMESE-RELATED Cyclin-Dependent Kinase Inhibitors SMR5 and SMR7 Regulate the DNA Damage Checkpoint in Response to Reactive Oxygen Species
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    The Arabidopsis SIAMESE-RELATED Cyclin-Dependent Kinase Inhibitors SMR5 and SMR7 Regulate the DNA Damage Checkpoint in Response to Reactive Oxygen Species
    Dalong Yi, Claire Lessa Alvim Kamei, Toon Cools, Sandy Vanderauwera, Naoki Takahashi, Yoko Okushima, Thomas Eekhout, Kaoru Okamoto Yoshiyama, John Larkin, Hilde Van den Daele, Phillip Conklin, Anne Britt, Masaaki Umeda, Lieven De Veylder
    Plant Cell Jan 2014, 26 (1) 296-309; DOI: https://doi.org/10.1105/tpc.113.118943

    Reactive oxygen species (ROS) cause DNA damage. In this work, two SIAMESE/SIAMESE-RELATED (SIM/SMR) genes that encode cyclin-dependent kinase inhibitors are described as being part of a signaling pathway that arrests cell proliferation in response to ROS, revealing a novel cell cycle checkpoint-signaling cascade.

  • The Role of <em>Arabidopsis</em> ABCG9 and ABCG31 ATP Binding Cassette Transporters in Pollen Fitness and the Deposition of Steryl Glycosides on the Pollen Coat
    You have accessRestricted Access
    The Role of Arabidopsis ABCG9 and ABCG31 ATP Binding Cassette Transporters in Pollen Fitness and the Deposition of Steryl Glycosides on the Pollen Coat
    Hyunju Choi, Kiyoshi Ohyama, Yu-Young Kim, Jun-Young Jin, Saet Buyl Lee, Yasuyo Yamaoka, Toshiya Muranaka, Mi Chung Suh, Shozo Fujioka, Youngsook Lee
    Plant Cell Jan 2014, 26 (1) 310-324; DOI: https://doi.org/10.1105/tpc.113.118935

    This work identified two ABC transporters important for normal pollen coat deposition and, thus, critical for pollen fitness. The transporters are probably involved in the transfer of pollen coat material from maternal tissues to the pollen surface.

  • <em>Arabidopsis</em> Microtubule-Destabilizing Protein 25 Functions in Pollen Tube Growth by Severing Actin Filaments
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    Arabidopsis Microtubule-Destabilizing Protein 25 Functions in Pollen Tube Growth by Severing Actin Filaments
    Tao Qin, Xiaomin Liu, Jiejie Li, Jingbo Sun, Leina Song, Tonglin Mao
    Plant Cell Jan 2014, 26 (1) 325-339; DOI: https://doi.org/10.1105/tpc.113.119768

    This study elucidates a mechanism whereby calcium enhances the actin filament–severing activity of MICROTUBULE-DESTABILIZING PROTEIN25 (MDP25) in the subapical region of pollen tubes, thereby modulating pollen tube growth in Arabidopsis.

  • ACTIN DEPOLYMERIZING FACTOR4 Regulates Actin Dynamics during Innate Immune Signaling in <em>Arabidopsis</em>
    Open Access
    ACTIN DEPOLYMERIZING FACTOR4 Regulates Actin Dynamics during Innate Immune Signaling in Arabidopsis
    Jessica L. Henty-Ridilla, Jiejie Li, Brad Day, Christopher J. Staiger
    Plant Cell Jan 2014, 26 (1) 340-352; DOI: https://doi.org/10.1105/tpc.113.122499

    Disruption of the host-cell actin cytoskeleton promotes the susceptibility of plants to diverse microbes. However, the signaling cascades and regulatory proteins linking the perception of microbes to cytoskeletal remodeling remain largely uncharacterized. This study implicates a key actin binding protein, ACTIN DEPOLYMERIZING FACTOR4, in plant innate immune signaling.

  • Nitric Oxide–Triggered Remodeling of Chloroplast Bioenergetics and Thylakoid Proteins upon Nitrogen Starvation in <em>Chlamydomonas reinhardtii</em>
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    Nitric Oxide–Triggered Remodeling of Chloroplast Bioenergetics and Thylakoid Proteins upon Nitrogen Starvation in Chlamydomonas reinhardtii
    Lili Wei, Benoit Derrien, Arnaud Gautier, Laura Houille-Vernes, Alix Boulouis, Denis Saint-Marcoux, Alizée Malnoë, Fabrice Rappaport, Catherine de Vitry, Olivier Vallon, Yves Choquet, Francis-André Wollman
    Plant Cell Jan 2014, 26 (1) 353-372; DOI: https://doi.org/10.1105/tpc.113.120121

    During nitrogen starvation under mixotrophic conditions, thylakoids undergo extensive remodeling, leading to photosynthesis inactivation and increased chlororespiration. Degradation of specific photosynthetic protein complexes is triggered by the intracellular production of NO that originates from the rerouting of intracellular nitrite.

  • Thylakoid FtsH Protease Contributes to Photosystem II and Cytochrome <em>b</em><sub>6</sub><em>f</em> Remodeling in <em>Chlamydomonas reinhardtii</em> under Stress Conditions
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    Thylakoid FtsH Protease Contributes to Photosystem II and Cytochrome b6f Remodeling in Chlamydomonas reinhardtii under Stress Conditions
    Alizée Malnoë, Fei Wang, Jacqueline Girard-Bascou, Francis-André Wollman, Catherine de Vitry
    Plant Cell Jan 2014, 26 (1) 373-390; DOI: https://doi.org/10.1105/tpc.113.120113

    FtsH is a ubiquitous protease that mediates the degradation of membrane proteins. The chloroplast FtsH is known for its involvement in repairing photosystem II damaged by light. This work reports the characterization of an ftsh mutant in Chlamydomonas and demonstrates the wider role of FtsH in thylakoid membrane protein maintenance under light as well as nutrient stresses.

  • Cardiolipin-Mediated Mitochondrial Dynamics and Stress Response in <em>Arabidopsis</em>
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    Cardiolipin-Mediated Mitochondrial Dynamics and Stress Response in Arabidopsis
    Ronghui Pan, A. Daniel Jones, Jianping Hu
    Plant Cell Jan 2014, 26 (1) 391-409; DOI: https://doi.org/10.1105/tpc.113.121095

    This work reveals aspects of the properties and function of the phospholipid cardiolipin (CL). In Arabidopsis, CL mediates mitochondrial fission at least in part by stabilizing the higher order protein complexes of dynamin-related protein DRP3, a major organelle division factor. CL also protects plants from stresses that induce programmed cell death.

  • <em>GLUTELIN PRECURSOR ACCUMULATION3</em> Encodes a Regulator of Post-Golgi Vesicular Traffic Essential for Vacuolar Protein Sorting in Rice Endosperm
    Open Access
    GLUTELIN PRECURSOR ACCUMULATION3 Encodes a Regulator of Post-Golgi Vesicular Traffic Essential for Vacuolar Protein Sorting in Rice Endosperm
    Yulong Ren, Yihua Wang, Feng Liu, Kunneng Zhou, Yu Ding, Feng Zhou, Ying Wang, Kai Liu, Lu Gan, Weiwei Ma, Xiaohua Han, Xin Zhang, Xiuping Guo, Fuqing Wu, Zhijun Cheng, Jiulin Wang, Cailin Lei, Qibing Lin, Ling Jiang, Chuanyin Wu, Yiqun Bao, Haiyang Wang, Jianmin Wan
    Plant Cell Jan 2014, 26 (1) 410-425; DOI: https://doi.org/10.1105/tpc.113.121376

    Dense vesicles (DVs) are known to be key carriers for sorting of storage proteins to protein storage vacuoles (PSVs) in seed plants. This work characterizes the kelch-repeat protein GLUTELIN PRECURSOR ACCUMULATION3, which forms a functional protein complex with the small GTPase Rab5a via its guanine exchange factor, VPS9a, to regulate directional trafficking of DVs to PSVs in rice endosperm.

  • Structural and Functional Modularity of the Orange Carotenoid Protein: Distinct Roles for the N- and C-Terminal Domains in Cyanobacterial Photoprotection
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    Structural and Functional Modularity of the Orange Carotenoid Protein: Distinct Roles for the N- and C-Terminal Domains in Cyanobacterial Photoprotection
    Ryan L. Leverenz, Denis Jallet, Ming-De Li, Richard A. Mathies, Diana Kirilovsky, Cheryl A. Kerfeld
    Plant Cell Jan 2014, 26 (1) 426-437; DOI: https://doi.org/10.1105/tpc.113.118588

    This work reveals key structure-function relationships in the photoprotective orange carotenoid protein. The N-terminal domain is shown to be the effector of energy dissipation; it binds to the phycobilisome and quenches fluorescence without prior photochemical activation. The C-terminal domain dynamically regulates the photoprotective activity of the N-terminal domain in response to light.

  • The Protein Phosphatase RCF2 and Its Interacting Partner NAC019 Are Critical for Heat Stress–Responsive Gene Regulation and Thermotolerance in <em>Arabidopsis</em>
    You have accessRestricted Access
    The Protein Phosphatase RCF2 and Its Interacting Partner NAC019 Are Critical for Heat Stress–Responsive Gene Regulation and Thermotolerance in Arabidopsis
    Qingmei Guan, Xiule Yue, Haitao Zeng, Jianhua Zhu
    Plant Cell Jan 2014, 26 (1) 438-453; DOI: https://doi.org/10.1105/tpc.113.118927

    This study employed forward genetic analysis to uncover an important function of a protein phosphatase, RCF2, and its interacting transcription factor, NAC019, in the activation of HSFs and HSPs and thermotolerance.

  • NITROGEN LIMITATION ADAPTATION Recruits PHOSPHATE2 to Target the Phosphate Transporter PT2 for Degradation during the Regulation of <em>Arabidopsis</em> Phosphate Homeostasis
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    NITROGEN LIMITATION ADAPTATION Recruits PHOSPHATE2 to Target the Phosphate Transporter PT2 for Degradation during the Regulation of Arabidopsis Phosphate Homeostasis
    Bong Soo Park, Jun Sung Seo, Nam-Hai Chua
    Plant Cell Jan 2014, 26 (1) 454-464; DOI: https://doi.org/10.1105/tpc.113.120311

    Elucidating the mechanism of a plant’s responses to phosphate deficiency will help to breed plants that can utilize environmental phosphate more efficiently. Here, we show that the level of the phosphate transporter PT2 is regulated by NITROGEN LIMITATION ADAPTATION and PHOSPHATE2 in a phosphate-responsive manner.

  • The <em>Arabidopsis</em> Mediator Complex Subunits MED16, MED14, and MED2 Regulate Mediator and RNA Polymerase II Recruitment to CBF-Responsive Cold-Regulated Genes
    Open Access
    The Arabidopsis Mediator Complex Subunits MED16, MED14, and MED2 Regulate Mediator and RNA Polymerase II Recruitment to CBF-Responsive Cold-Regulated Genes
    Piers A. Hemsley, Charlotte H. Hurst, Ewon Kaliyadasa, Rebecca Lamb, Marc R. Knight, Elizabeth A. De Cothi, John F. Steele, Heather Knight
    Plant Cell Jan 2014, 26 (1) 465-484; DOI: https://doi.org/10.1105/tpc.113.117796

    This article demonstrates roles for three subunits of the Plant Mediator complex in recruiting Mediator and RNA polymerase II to specific cold-upregulated genes, facilitating their expression and the subsequent gain of freezing tolerance by the plant. Not all Mediator subunits regulate the same genes, with dark-inducible expression using different subunits than cold-inducible expression.

  • An E4 Ligase Facilitates Polyubiquitination of Plant Immune Receptor Resistance Proteins in <em>Arabidopsis</em>
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    An E4 Ligase Facilitates Polyubiquitination of Plant Immune Receptor Resistance Proteins in Arabidopsis
    Yan Huang, Sean Minaker, Charlotte Roth, Shuai Huang, Philip Hieter, Volker Lipka, Marcel Wiermer, Xin Li
    Plant Cell Jan 2014, 26 (1) 485-496; DOI: https://doi.org/10.1105/tpc.113.119057

    The Arabidopsis thaliana E4 ligase MUSE3 facilitates the polyubiquitination of immune receptor resistance proteins, including SNC1 and RPS2, leading to more efficient degradation of the target substrates. This E4 activity seems to function downstream of the E3 ligase SCFCPR1.

  • The Rice TAL Effector–Dependent Resistance Protein XA10 Triggers Cell Death and Calcium Depletion in the Endoplasmic Reticulum
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    The Rice TAL Effector–Dependent Resistance Protein XA10 Triggers Cell Death and Calcium Depletion in the Endoplasmic Reticulum
    Dongsheng Tian, Junxia Wang, Xuan Zeng, Keyu Gu, Chengxiang Qiu, Xiaobei Yang, Zhiyun Zhou, Meiling Goh, Yanchang Luo, Maki Murata-Hori, Frank F. White, Zhongchao Yin
    Plant Cell Jan 2014, 26 (1) 497-515; DOI: https://doi.org/10.1105/tpc.113.119255

    This work identifies and characterizes a rice disease resistance gene, XA10, which encodes an inducible, intrinsic terminator protein that triggers programmed cell death in plant and animal cells. This cell death involves disruption of the endoplasmic reticulum and cellular Ca2+ homeostasis.

Teaching Tools in Plant Biology

  • Plant–Water Relations (1): Uptake and Transport
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    Plant–Water Relations (1): Uptake and Transport
    Plant Cell Jan 2014, 26 (1) tpc.114.tt0114; DOI: https://doi.org/10.1105/tpc.114.tt0114
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The Plant Cell Online: 26 (1)
The Plant Cell
Vol. 26, Issue 1
Jan 2014
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