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Table of Contents

The Plant Cell Online: 25 (9)
Sep 2013

JOINT THE PLANT CELL/PLANT PHYSIOLOGY EDITORIAL

  • Manipulation and Misconduct in the Handling of Image Data
    Open Access
    Manipulation and Misconduct in the Handling of Image Data
    Cathie Martin, Mike Blatt
    Plant Cell Sep 2013, 25 (9) 3147-3148; DOI: https://doi.org/10.1105/tpc.113.250980

IN BRIEF

  • Putting the cenH3 in the Centromere: <em>Arabidopsis</em> KINETOCHORE NULL2 Acts Upstream of cenH3 Deposition
    You have accessRestricted Access
    Putting the cenH3 in the Centromere: Arabidopsis KINETOCHORE NULL2 Acts Upstream of cenH3 Deposition
    Jennifer Mach
    Plant Cell Sep 2013, 25 (9) 3149; DOI: https://doi.org/10.1105/tpc.113.250910
  • Salt of the Earth: Ethylene Promotes Salt Tolerance by Enhancing Na/K Homeostasis
    You have accessRestricted Access
    Salt of the Earth: Ethylene Promotes Salt Tolerance by Enhancing Na/K Homeostasis
    Jennifer Lockhart
    Plant Cell Sep 2013, 25 (9) 3150; DOI: https://doi.org/10.1105/tpc.113.250911
  • Endoplasmic Reticulum–Localized Transcription Factors and Mitochondrial Retrograde Regulation
    You have accessRestricted Access
    Endoplasmic Reticulum–Localized Transcription Factors and Mitochondrial Retrograde Regulation
    Nancy R. Hofmann
    Plant Cell Sep 2013, 25 (9) 3151; DOI: https://doi.org/10.1105/tpc.113.250912

COMMENTARY

  • Intrinsic Disorder in Pathogen Effectors: Protein Flexibility as an Evolutionary Hallmark in a Molecular Arms Race
    You have accessRestricted Access
    Intrinsic Disorder in Pathogen Effectors: Protein Flexibility as an Evolutionary Hallmark in a Molecular Arms Race
    Macarena Marín, Vladimir N. Uversky, Thomas Ott
    Plant Cell Sep 2013, 25 (9) 3153-3157; DOI: https://doi.org/10.1105/tpc.113.116319

REVIEW

  • Plant Callus: Mechanisms of Induction and Repression
    Open Access
    Plant Callus: Mechanisms of Induction and Repression
    Momoko Ikeuchi, Keiko Sugimoto, Akira Iwase
    Plant Cell Sep 2013, 25 (9) 3159-3173; DOI: https://doi.org/10.1105/tpc.113.116053

LARGE-SCALE BIOLOGY ARTICLES

  • Tissue-Specific Profiling Reveals Transcriptome Alterations in <em>Arabidopsis</em> Mutants Lacking Morphological Phenotypes
    You have accessRestricted Access
    Tissue-Specific Profiling Reveals Transcriptome Alterations in Arabidopsis Mutants Lacking Morphological Phenotypes
    Marissa Simon, Angela Bruex, Raghunandan M. Kainkaryam, Xiaohua Zheng, Ling Huang, Peter J. Woolf, John Schiefelbein
    Plant Cell Sep 2013, 25 (9) 3175-3185; DOI: https://doi.org/10.1105/tpc.113.115121

    Most loss-of-function single mutants show no visible phenotype differences compared with the wild type. This work shows that mutations in duplicate transcription factor genes of the root epidermis elicit dramatic changes in transcript profiles despite the lack of a morphological defect, illustrating the importance of in-depth phenotypic analyses and the complexity of duplicate gene diversification.

  • COPPER RESPONSE REGULATOR1–Dependent and –Independent Responses of the <em>Chlamydomonas reinhardtii</em> Transcriptome to Dark Anoxia
    You have accessRestricted Access
    COPPER RESPONSE REGULATOR1–Dependent and –Independent Responses of the Chlamydomonas reinhardtii Transcriptome to Dark Anoxia
    Anja Hemschemeier, David Casero, Bensheng Liu, Christoph Benning, Matteo Pellegrini, Thomas Happe, Sabeeha S. Merchant
    Plant Cell Sep 2013, 25 (9) 3186-3211; DOI: https://doi.org/10.1105/tpc.113.115741

    This work examines the transcriptomic responses of Chlamydomonas to the combined conditions of anoxia and darkness, finding that the cells implement acclimation strategies to save and generate energy using all available resources and that COPPER RESPONSE REGULATOR1, a transcription factor involved in signaling in hypoxia and copper deficiency, plays an important role in these responses.

  • Dynamic Expression of Imprinted Genes Associates with Maternally Controlled Nutrient Allocation during Maize Endosperm Development
    Open Access
    Dynamic Expression of Imprinted Genes Associates with Maternally Controlled Nutrient Allocation during Maize Endosperm Development
    Mingming Xin, Ruolin Yang, Guosheng Li, Hao Chen, John Laurie, Chuang Ma, Dongfang Wang, Yingyin Yao, Brian A. Larkins, Qixin Sun, Ramin Yadegari, Xiangfeng Wang, Zhongfu Ni
    Plant Cell Sep 2013, 25 (9) 3212-3227; DOI: https://doi.org/10.1105/tpc.113.115592

    Genomic imprinting refers to the differential expression of parental alleles in a parent-of-origin manner. Through a genome-wide identification of the imprinted genes in hybrid maize endosperm, this work provides evidence that the allele-specific expression status of the most imprinted genes is subject to dynamic change associated with different developmental events in the maize endosperm.

  • Establishing a Framework for the Ad/Abaxial Regulatory Network of <em>Arabidopsis</em>: Ascertaining Targets of Class III HOMEODOMAIN LEUCINE ZIPPER and KANADI Regulation
    You have accessRestricted Access
    Establishing a Framework for the Ad/Abaxial Regulatory Network of Arabidopsis: Ascertaining Targets of Class III HOMEODOMAIN LEUCINE ZIPPER and KANADI Regulation
    Brenda J. Reinhart, Tie Liu, Nicole R. Newell, Enrico Magnani, Tengbo Huang, Randall Kerstetter, Scott Michaels, M. Kathryn Barton
    Plant Cell Sep 2013, 25 (9) 3228-3249; DOI: https://doi.org/10.1105/tpc.113.111518

    HD-ZIPIII proteins and KANADI proteins are responsible for tailoring transcription in cells that will make up different parts of the leaf and in the self-renewing stem cells. This article reports which genes are turned on and off by the HD-ZIPIII and KANADI proteins and, therefore, how these proteins act to regulate the growth of new leaves and branches.

RESEARCH ARTICLES

  • <em>TED</em>, an Autonomous and Rare Maize Transposon of the <em>Mutator</em> Superfamily with a High Gametophytic Excision Frequency
    You have accessRestricted Access
    TED, an Autonomous and Rare Maize Transposon of the Mutator Superfamily with a High Gametophytic Excision Frequency
    Yubin Li, Linda Harris, Hugo K. Dooner
    Plant Cell Sep 2013, 25 (9) 3251-3265; DOI: https://doi.org/10.1105/tpc.113.116517

    This work identifies TED, an autonomous maize transposable element related to the well-studied MuDR Mutator elements, but with some differences, including low copy number and a strong tendency to excise during the mitotic divisions of the gametophyte.

  • Expression Quantitative Trait Locus Mapping across Water Availability Environments Reveals Contrasting Associations with Genomic Features in <em>Arabidopsis</em>
    Open Access
    Expression Quantitative Trait Locus Mapping across Water Availability Environments Reveals Contrasting Associations with Genomic Features in Arabidopsis
    David B. Lowry, Tierney L. Logan, Luca Santuari, Christian S. Hardtke, James H. Richards, Leah J. DeRose-Wilson, John K. McKay, Saunak Sen, Thomas E. Juenger
    Plant Cell Sep 2013, 25 (9) 3266-3279; DOI: https://doi.org/10.1105/tpc.113.115352

    Expression quantitative trait locus mapping in well-watered and drying soil revealed differential gene expression resulting from standing genetic variation, environmental condition, and gene × environment interactions. Genomic features were then shown to be predictive of genetic and environmental variation in gene expression, but in contrasting ways.

  • The More the Merrier: Recent Hybridization and Polyploidy in <em>Cardamine</em>
    You have accessRestricted Access
    The More the Merrier: Recent Hybridization and Polyploidy in Cardamine
    Terezie Mandáková, Aleš Kovařík, Judita Zozomová-Lihová, Rie Shimizu-Inatsugi, Kentaro K. Shimizu, Klaus Mummenhoff, Karol Marhold, Martin A. Lysak
    Plant Cell Sep 2013, 25 (9) 3280-3295; DOI: https://doi.org/10.1105/tpc.113.114405

    Allopolyploids usually arise by hybridization of two species. This work examines the evolutionary role of a triploid bitter-cress hybrid (Cardamine × insueta) in the origin of trigenome hybrids (Cardamine × schulzii) and elucidates the 110-year history of interspecies hybridization in Cardamine, demonstrating that semifertile triploid hybrids may facilitate the origin of new trigenome allopolyploids.

  • The <em>Fragaria vesca</em> Homolog of SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 Represses Flowering and Promotes Vegetative Growth
    You have accessRestricted Access
    The Fragaria vesca Homolog of SUPPRESSOR OF OVEREXPRESSION OF CONSTANS1 Represses Flowering and Promotes Vegetative Growth
    Katriina Mouhu, Takeshi Kurokura, Elli A. Koskela, Victor A. Albert, Paula Elomaa, Timo Hytönen
    Plant Cell Sep 2013, 25 (9) 3296-3310; DOI: https://doi.org/10.1105/tpc.113.115055

    This work reveals that the woodland strawberry ortholog of the floral activator SOC1 (Fv SOC1) is the general regulator of the photoperiodic development in this perennial short-day plant. It suppresses photoperiodic flowering by activating a major floral repressor Fv TFL1 and mediates photoperiodic signaling to promote runner development through regulating gibberellin biosynthetic genes.

  • <em>ETHYLENE-INSENSITIVE3</em> Is a Senescence-Associated Gene That Accelerates Age-Dependent Leaf Senescence by Directly Repressing <em>miR164</em> Transcription in <em>Arabidopsis</em>
    You have accessRestricted Access
    ETHYLENE-INSENSITIVE3 Is a Senescence-Associated Gene That Accelerates Age-Dependent Leaf Senescence by Directly Repressing miR164 Transcription in Arabidopsis
    Zhonghai Li, Jinying Peng, Xing Wen, Hongwei Guo
    Plant Cell Sep 2013, 25 (9) 3311-3328; DOI: https://doi.org/10.1105/tpc.113.113340

    This work demonstrates that EIN3 is a functional senescence-associated gene and defines a continuation of the signaling pathway involving EIN2-EIN3-miR164-NAC2 in regulating leaf senescence. The findings provide a mechanistic insight into how ethylene promotes the progression of leaf senescence in Arabidopsis.

  • A Kinetic Analysis of the Auxin Transcriptome Reveals Cell Wall Remodeling Proteins That Modulate Lateral Root Development in <em>Arabidopsis</em>
    Open Access
    A Kinetic Analysis of the Auxin Transcriptome Reveals Cell Wall Remodeling Proteins That Modulate Lateral Root Development in Arabidopsis
    Daniel R. Lewis, Amy L. Olex, Stacey R. Lundy, William H. Turkett, Jacquelyn S. Fetrow, Gloria K. Muday
    Plant Cell Sep 2013, 25 (9) 3329-3346; DOI: https://doi.org/10.1105/tpc.113.114868

    We identified genes involved in auxin-dependent lateral root formation using high temporal resolution and genome-wide transcript abundance analysis of auxin-treated Arabidopsis roots. Cell wall modification mutants, revealed by a reverse-genetic screen, had root phenotypes, supporting the hypothesis that auxin-mediated cell wall remodeling is an essential feature of lateral root development.

  • The Ubiquitin Receptor DA1 Interacts with the E3 Ubiquitin Ligase DA2 to Regulate Seed and Organ Size in <em>Arabidopsis</em>
    You have accessRestricted Access
    The Ubiquitin Receptor DA1 Interacts with the E3 Ubiquitin Ligase DA2 to Regulate Seed and Organ Size in Arabidopsis
    Tian Xia, Na Li, Jack Dumenil, Jie Li, Andrei Kamenski, Michael W. Bevan, Fan Gao, Yunhai Li
    Plant Cell Sep 2013, 25 (9) 3347-3359; DOI: https://doi.org/10.1105/tpc.113.115063

    Although size control is a fundamental question in developmental biology, little is known about the mechanisms that determine seed and organ size in plants. Here, we show that two ubiquitin-related proteins, DA1 and DA2, interact genetically and physically with each other to regulate seed and organ size in Arabidopsis, suggesting that DA1 and DA2 are promising targets for crop improvement.

  • <em>An-1</em> Encodes a Basic Helix-Loop-Helix Protein That Regulates Awn Development, Grain Size, and Grain Number in Rice
    Open Access
    An-1 Encodes a Basic Helix-Loop-Helix Protein That Regulates Awn Development, Grain Size, and Grain Number in Rice
    Jianghong Luo, Hui Liu, Taoying Zhou, Benguo Gu, Xuehui Huang, Yingying Shangguan, Jingjie Zhu, Yan Li, Yan Zhao, Yongchun Wang, Qiang Zhao, Ahong Wang, Ziqun Wang, Tao Sang, Zixuan Wang, Bin Han
    Plant Cell Sep 2013, 25 (9) 3360-3376; DOI: https://doi.org/10.1105/tpc.113.113589

    An-1 regulates the formation of long awns of seeds, which are important for seed dispersal in wild rice. However, An-1 has been selected in cultivated rice, which leads to loss of awn as well as more grains per panicle and higher yield per plant. Cloning of An-1 provides insight into how artificial selection shaped plant morphology to meet human demands during the long history of domestication.

  • The BRASSINOSTEROID INSENSITIVE1–LIKE3 Signalosome Complex Regulates <em>Arabidopsis</em> Root Development
    Open Access
    The BRASSINOSTEROID INSENSITIVE1–LIKE3 Signalosome Complex Regulates Arabidopsis Root Development
    Norma Fàbregas, Na Li, Sjef Boeren, Tara E. Nash, Michael B. Goshe, Steven D. Clouse, Sacco de Vries, Ana I. Caño-Delgado
    Plant Cell Sep 2013, 25 (9) 3377-3388; DOI: https://doi.org/10.1105/tpc.113.114462

    Brassinosteroids are essential regulators of plant growth and development. While BRI1 signaling regulates cellular growth in the majority of plant tissues, our study uncovers the composition of the BRL3 receptor complex in Arabidopsis and addresses cell type–specific roles for BRL3 signaling in root development.

  • <em>Arabidopsis</em> KINETOCHORE NULL2 Is an Upstream Component for Centromeric Histone H3 Variant cenH3 Deposition at Centromeres
    You have accessRestricted Access
    Arabidopsis KINETOCHORE NULL2 Is an Upstream Component for Centromeric Histone H3 Variant cenH3 Deposition at Centromeres
    Inna Lermontova, Markus Kuhlmann, Swetlana Friedel, Twan Rutten, Stefan Heckmann, Michael Sandmann, Dmitri Demidov, Veit Schubert, Ingo Schubert
    Plant Cell Sep 2013, 25 (9) 3389-3404; DOI: https://doi.org/10.1105/tpc.113.114736

    This work finds that Arabidopsis KINETOCHORE NULL2 (KNL2) colocalizes with the centromere histone variant cenH3. Characterization of knl2 mutants showed reduction of cenH3 deposition at centromeres, abnormalities of mitosis and meiosis, seed abortion, and alterations in DNA methylation.

  • <em>Arabidopsis</em> ACTIN-DEPOLYMERIZING FACTOR7 Severs Actin Filaments and Regulates Actin Cable Turnover to Promote Normal Pollen Tube Growth
    You have accessRestricted Access
    Arabidopsis ACTIN-DEPOLYMERIZING FACTOR7 Severs Actin Filaments and Regulates Actin Cable Turnover to Promote Normal Pollen Tube Growth
    Yiyan Zheng, Yurong Xie, Yuxiang Jiang, Xiaolu Qu, Shanjin Huang
    Plant Cell Sep 2013, 25 (9) 3405-3423; DOI: https://doi.org/10.1105/tpc.113.117820

    Pollen tube growth is highly dependent on dynamic remodeling of the actin cytoskeleton, but the mechanisms that regulate the dynamic turnover of longitudinal actin cables in pollen tubes remain largely unknown. Here, we show that ACTIN-DEPOLYMERIZING FACTOR7 inhibits nucleotide exchange on actin and severs filaments in pollen tubes, thereby promoting turnover of longitudinal actin cables.

  • Cellular Auxin Homeostasis under High Temperature Is Regulated through a SORTING NEXIN1–Dependent Endosomal Trafficking Pathway
    You have accessRestricted Access
    Cellular Auxin Homeostasis under High Temperature Is Regulated through a SORTING NEXIN1–Dependent Endosomal Trafficking Pathway
    Taiki Hanzawa, Kyohei Shibasaki, Takahiro Numata, Yukio Kawamura, Thierry Gaude, Abidur Rahman
    Plant Cell Sep 2013, 25 (9) 3424-3433; DOI: https://doi.org/10.1105/tpc.113.115881

    This work provides a mechanistic explanation linking increased auxin level and plant development under high temperature and comprehensively demonstrates that intracellular auxin homeostasis is a critical factor in plant adaptation to high temperature.

  • The Endoplasmic Reticulum Is the Main Membrane Source for Biogenesis of the Lytic Vacuole in <em>Arabidopsis</em>
    You have accessRestricted Access
    The Endoplasmic Reticulum Is the Main Membrane Source for Biogenesis of the Lytic Vacuole in Arabidopsis
    Corrado Viotti, Falco Krüger, Melanie Krebs, Christoph Neubert, Fabian Fink, Upendo Lupanga, David Scheuring, Yohann Boutté, Márcia Frescatada-Rosa, Susanne Wolfenstetter, Norbert Sauer, Stefan Hillmer, Markus Grebe, Karin Schumacher
    Plant Cell Sep 2013, 25 (9) 3434-3449; DOI: https://doi.org/10.1105/tpc.113.114827

    This work uses genetic and pharmacological interference in combination with live-cell imaging, three-dimensional reconstruction, and electron microscopy to monitor trafficking to the tonoplast of the two proton pumps, V-ATPase and V-PPase. The results provide strong evidence for a Golgi-independent route of vacuolar biogenesis in plant cells.

  • A Membrane-Bound NAC Transcription Factor, ANAC017, Mediates Mitochondrial Retrograde Signaling in <em>Arabidopsis</em>
    Open Access
    A Membrane-Bound NAC Transcription Factor, ANAC017, Mediates Mitochondrial Retrograde Signaling in Arabidopsis
    Sophia Ng, Aneta Ivanova, Owen Duncan, Simon R. Law, Olivier Van Aken, Inge De Clercq, Yan Wang, Chris Carrie, Lin Xu, Beata Kmiec, Hayden Walker, Frank Van Breusegem, James Whelan, Estelle Giraud
    Plant Cell Sep 2013, 25 (9) 3450-3471; DOI: https://doi.org/10.1105/tpc.113.113985

    This work identifies a biological role for ANAC017 as an integral cellular component in mitochondrial retrograde signaling and a high-level transcriptional regulator that is necessary for H2O2-mediated primary stress responses in plants.

  • The Membrane-Bound NAC Transcription Factor ANAC013 Functions in Mitochondrial Retrograde Regulation of the Oxidative Stress Response in <em>Arabidopsis</em>
    You have accessRestricted Access
    The Membrane-Bound NAC Transcription Factor ANAC013 Functions in Mitochondrial Retrograde Regulation of the Oxidative Stress Response in Arabidopsis
    Inge De Clercq, Vanessa Vermeirssen, Olivier Van Aken, Klaas Vandepoele, Monika W. Murcha, Simon R. Law, Annelies Inzé, Sophia Ng, Aneta Ivanova, Debbie Rombaut, Brigitte van de Cotte, Pinja Jaspers, Yves Van de Peer, Jaakko Kangasjärvi, James Whelan, Frank Van Breusegem
    Plant Cell Sep 2013, 25 (9) 3472-3490; DOI: https://doi.org/10.1105/tpc.113.117168

    This work reports the discovery of a cis-regulatory motif in the promoters of genes that are subject to mitochondrial retrograde regulation and the identification of transcription factors that bind to this element, thereby steering mitochondrial retrograde-induced gene expression.

  • Histone Deacetylase Complex1 Expression Level Titrates Plant Growth and Abscisic Acid Sensitivity in <em>Arabidopsis</em>
    Open Access
    Histone Deacetylase Complex1 Expression Level Titrates Plant Growth and Abscisic Acid Sensitivity in Arabidopsis
    Giorgio Perrella, Manuel A. Lopez-Vernaza, Craig Carr, Emanuela Sani, Veronique Gosselé, Christoph Verduyn, Fabian Kellermeier, Matthew A. Hannah, Anna Amtmann
    Plant Cell Sep 2013, 25 (9) 3491-3505; DOI: https://doi.org/10.1105/tpc.113.114835

    Chemical modification of histones alters DNA structure and regulates gene expression. We have identified the Histone Deacetylase Complex (HDC) 1 protein as a component of chromatin in plants required for histone deacetylation and for induction of stress-inducible genes. HDC1-overexpression improves germination and plant growth without affecting plant morphology.

  • Dual Role for Phospholipid:Diacylglycerol Acyltransferase: Enhancing Fatty Acid Synthesis and Diverting Fatty Acids from Membrane Lipids to Triacylglycerol in <em>Arabidopsis</em> Leaves
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    Dual Role for Phospholipid:Diacylglycerol Acyltransferase: Enhancing Fatty Acid Synthesis and Diverting Fatty Acids from Membrane Lipids to Triacylglycerol in Arabidopsis Leaves
    Jilian Fan, Chengshi Yan, Xuebin Zhang, Changcheng Xu
    Plant Cell Sep 2013, 25 (9) 3506-3518; DOI: https://doi.org/10.1105/tpc.113.117358

    This work finds that Arabidopsis PHOSPHOLIPID:DIACYLGLYCEROL ACYLTRANSFERASE1 (PDAT1) is a critical enzyme in triacylglycerol assembly in vegetative tissues. Overexpression of PDAT1 enhances both fatty acid and triacylglycerol synthesis in leaves. The results suggest genetic engineering strategies to increase oil accumulation in biomass crops used for feed and for biofuel production.

  • Zeaxanthin Binds to Light-Harvesting Complex Stress-Related Protein to Enhance Nonphotochemical Quenching in <em>Physcomitrella patens</em>
    You have accessRestricted Access
    Zeaxanthin Binds to Light-Harvesting Complex Stress-Related Protein to Enhance Nonphotochemical Quenching in Physcomitrella patens
    Alberta Pinnola, Luca Dall’Osto, Caterina Gerotto, Tomas Morosinotto, Roberto Bassi, Alessandro Alboresi
    Plant Cell Sep 2013, 25 (9) 3519-3534; DOI: https://doi.org/10.1105/tpc.113.114538

    In the moss Physcomitrella patens, LHCSR and PSBS, which trigger nonphotochemical quenching (NPQ) in green algae and vascular plants, respectively, are both active. This work reports that zeaxanthin, an NPQ enhancer, is far more active on LHCSR-dependent NPQ than on the PSBS-dependent NPQ. Consistent with this, zeaxanthin binds LHCSR in excess light.

  • An <em>Arabidopsis</em> Soil-Salinity–Tolerance Mutation Confers Ethylene-Mediated Enhancement of Sodium/Potassium Homeostasis
    You have accessRestricted Access
    An Arabidopsis Soil-Salinity–Tolerance Mutation Confers Ethylene-Mediated Enhancement of Sodium/Potassium Homeostasis
    Caifu Jiang, Eric J. Belfield, Yi Cao, J. Andrew C. Smith, Nicholas P. Harberd
    Plant Cell Sep 2013, 25 (9) 3535-3552; DOI: https://doi.org/10.1105/tpc.113.115659

    The soil salinity tolerance of an Arabidopsis mutant is shown to be caused by a mutation in the ETO1 gene that results in ethylene overproduction. Increased ethylene causes root stele reactive oxygen species (ROS)–dependent reductions in root Na influx and xylem loading and stelar ROS-independent enhancement of root K status, thus improving plant Na/K homeostasis and salinity tolerance.

  • Temporal-Spatial Interaction between Reactive Oxygen Species and Abscisic Acid Regulates Rapid Systemic Acclimation in Plants
    Open Access
    Temporal-Spatial Interaction between Reactive Oxygen Species and Abscisic Acid Regulates Rapid Systemic Acclimation in Plants
    Nobuhiro Suzuki, Gad Miller, Carolina Salazar, Hossain A. Mondal, Elena Shulaev, Diego F. Cortes, Joel L. Shuman, Xiaozhong Luo, Jyoti Shah, Karen Schlauch, Vladimir Shulaev, Ron Mittler
    Plant Cell Sep 2013, 25 (9) 3553-3569; DOI: https://doi.org/10.1105/tpc.113.114595

    An autopropagating wave of reactive oxygen species (the ROS wave) rapidly spreads from a local tissue exposed to stress to the entire plant. In coordination with other systemic signals and abscisic acid, it activates systemic acclimation mechanisms in the entire plant and enhances tolerance to abiotic stress. The enhanced tolerance is specific to the original stress that induces it.

  • Repression of Growth Regulating Factors by the MicroRNA396 Inhibits Cell Proliferation by UV-B Radiation in <em>Arabidopsis</em> Leaves
    You have accessRestricted Access
    Repression of Growth Regulating Factors by the MicroRNA396 Inhibits Cell Proliferation by UV-B Radiation in Arabidopsis Leaves
    Romina Casadevall, Ramiro E. Rodriguez, Juan M. Debernardi, Javier F. Palatnik, Paula Casati
    Plant Cell Sep 2013, 25 (9) 3570-3583; DOI: https://doi.org/10.1105/tpc.113.117473

    Inhibition of leaf growth is one of the most consistent responses of plants upon exposure to UV-B radiation, and this radiation affects cell proliferation and cell expansion. In this work, we demonstrate that inhibition of cell proliferation by UV-B radiation in Arabidopsis is mediated by GROWTH-REGULATING FACTORs and the microRNA miR396 and that this pathway depends on the mitogen-activated protein kinase MPK3.

  • The C<sub>2</sub>H<sub>2</sub> Transcription Factor REGULATOR OF SYMBIOSOME DIFFERENTIATION Represses Transcription of the Secretory Pathway Gene <em>VAMP721a</em> and Promotes Symbiosome Development in <em>Medicago truncatula</em>
    Open Access
    The C2H2 Transcription Factor REGULATOR OF SYMBIOSOME DIFFERENTIATION Represses Transcription of the Secretory Pathway Gene VAMP721a and Promotes Symbiosome Development in Medicago truncatula
    Senjuti Sinharoy, Ivone Torres-Jerez, Kaustav Bandyopadhyay, Attila Kereszt, Catalina I. Pislariu, Jin Nakashima, Vagner A. Benedito, Eva Kondorosi, Michael K. Udvardi
    Plant Cell Sep 2013, 25 (9) 3584-3601; DOI: https://doi.org/10.1105/tpc.113.114017

    This work reports a plant transcription factor, RSD, that is required for symbiosome development and symbiotic nitrogen fixation (SNF) in the model legume Medicago truncatula. RSD represses the expression of the secretory pathway gene VAMP721a, which suggests that alteration in this pathway is important for SNF.

  • The Cytosolic Nucleoprotein of the Plant-Infecting Bunyavirus Tomato Spotted Wilt Recruits Endoplasmic Reticulum–Resident Proteins to Endoplasmic Reticulum Export Sites
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    The Cytosolic Nucleoprotein of the Plant-Infecting Bunyavirus Tomato Spotted Wilt Recruits Endoplasmic Reticulum–Resident Proteins to Endoplasmic Reticulum Export Sites
    Daniela Ribeiro, Maartje Jung, Sjef Moling, Jan Willem Borst, Rob Goldbach, Richard Kormelink
    Plant Cell Sep 2013, 25 (9) 3602-3614; DOI: https://doi.org/10.1105/tpc.113.114298

    This work identifies a major role for the cytosolic structural protein of plant-infecting bunyaviruses in the concentration of viral glycoprotein cargo at endoplasmic reticulum export sites before their traffic to the Golgi complex where they further mature.

  • The Tomato Fni3 Lysine-63–Specific Ubiquitin-Conjugating Enzyme and Suv Ubiquitin E2 Variant Positively Regulate Plant Immunity
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    The Tomato Fni3 Lysine-63–Specific Ubiquitin-Conjugating Enzyme and Suv Ubiquitin E2 Variant Positively Regulate Plant Immunity
    Ravi V. Mural, Yao Liu, Tracy R. Rosebrock, Jennifer J. Brady, Sadia Hamera, Richard A. Connor, Gregory B. Martin, Lirong Zeng
    Plant Cell Sep 2013, 25 (9) 3615-3631; DOI: https://doi.org/10.1105/tpc.113.117093

    The Ubc13-type ubiquitin-conjugating enzyme catalyzes Lys-63–specific ubiquitination, which usually plays a nonproteolytic, regulatory role in the cell. In this study, Fni3, the tomato homolog of Ubc13, and its cofactor Suv were identified and shown to regulate Fen-mediated and other R protein–mediated, immunity-associated cell death, revealing an important mechanism for regulation of the plant immune system.

CORRECTION

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    Correction
    Plant Cell Sep 2013, 25 (9) 3632; DOI: https://doi.org/10.1105/tpc.113.250960
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The Plant Cell Online: 25 (9)
The Plant Cell
Vol. 25, Issue 9
Sep 2013
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