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Table of Contents

The Plant Cell Online: 19 (8)
Aug 2007
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
  • N
  • O
  • P
  • Q
  • R
  • S
  • T
  • U
  • V
  • W
  • X
  • Y
  • Z

A

  1. Alonso, Jose

    1. You have accessRestricted Access
      A WD40 Domain Cyclophilin Interacts with Histone H3 and Functions in Gene Repression and Organogenesis in Arabidopsis
      Hong Li, Zengyong He, Guihua Lu, Sung Chul Lee, Jose Alonso, Joseph R. Ecker, Sheng Luan
      Plant Cell Aug 2007, 19 (8) 2403-2416; DOI: https://doi.org/10.1105/tpc.107.053579

      In this study, the WD40-containing cyclophilin CYP71 is identified as an essential factor for normal development in Arabidopsis. CYP71 physically interacts with histone H3 and regulates the level of histone methylation of target loci, thus affecting gene expression. CYP71 is conserved among eukaryotes and may serve as a ubiquitous chromatin remodeling factor involved in epigenetic silencing.

  2. Ammar, Randa

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

  3. Arend, Matthias

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

B

  1. Barkan, Alice

    1. You have accessRestricted Access
      A Ribonuclease III Domain Protein Functions in Group II Intron Splicing in Maize Chloroplasts
      Kenneth P. Watkins, Tiffany S. Kroeger, Amy M. Cooke, Rosalind E. Williams-Carrier, Giulia Friso, Susan E. Belcher, Klaas J. van Wijk, Alice Barkan
      Plant Cell Aug 2007, 19 (8) 2606-2623; DOI: https://doi.org/10.1105/tpc.107.053736

      Chloroplasts harbor numerous group II introns, ribozymes whose activity is facilitated by proteins in vivo. This study shows that RNC1, a protein with catalytically inactive RNAse III domains, promotes the splicing of many group II introns in chloroplasts and is bound to those introns in vivo. RNC1 functions both together with and independently of previously described chloroplast splicing factors.

  2. Battaglia, Raffaella

    1. You have accessRestricted Access
      Genetic and Molecular Interactions between BELL1 and MADS Box Factors Support Ovule Development in Arabidopsis
      Vittoria Brambilla, Raffaella Battaglia, Monica Colombo, Simona Masiero, Stefano Bencivenga, Martin M. Kater, Lucia Colombo
      Plant Cell Aug 2007, 19 (8) 2544-2556; DOI: https://doi.org/10.1105/tpc.107.051797

      Ovule development requires a correct balance of factors determining ovule and carpel identity. It is shown that this balance is obtained by complex formation between BELL1 and AGAMOUS. Furthermore, ovule differentiation requires the regulation of the stem cell maintenance gene WUSCHEL, the repression of which is predominantly maintained by BELL1 during ovule development.

  3. Belcher, Susan E.

    1. You have accessRestricted Access
      A Ribonuclease III Domain Protein Functions in Group II Intron Splicing in Maize Chloroplasts
      Kenneth P. Watkins, Tiffany S. Kroeger, Amy M. Cooke, Rosalind E. Williams-Carrier, Giulia Friso, Susan E. Belcher, Klaas J. van Wijk, Alice Barkan
      Plant Cell Aug 2007, 19 (8) 2606-2623; DOI: https://doi.org/10.1105/tpc.107.053736

      Chloroplasts harbor numerous group II introns, ribozymes whose activity is facilitated by proteins in vivo. This study shows that RNC1, a protein with catalytically inactive RNAse III domains, promotes the splicing of many group II introns in chloroplasts and is bound to those introns in vivo. RNC1 functions both together with and independently of previously described chloroplast splicing factors.

  4. Bencivenga, Stefano

    1. You have accessRestricted Access
      Genetic and Molecular Interactions between BELL1 and MADS Box Factors Support Ovule Development in Arabidopsis
      Vittoria Brambilla, Raffaella Battaglia, Monica Colombo, Simona Masiero, Stefano Bencivenga, Martin M. Kater, Lucia Colombo
      Plant Cell Aug 2007, 19 (8) 2544-2556; DOI: https://doi.org/10.1105/tpc.107.051797

      Ovule development requires a correct balance of factors determining ovule and carpel identity. It is shown that this balance is obtained by complex formation between BELL1 and AGAMOUS. Furthermore, ovule differentiation requires the regulation of the stem cell maintenance gene WUSCHEL, the repression of which is predominantly maintained by BELL1 during ovule development.

  5. Bevan, Michael W.

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

  6. Bhalerao, Rishikesh P.

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

  7. Blancaflor, Elison B.

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  8. Boerjan, Wout

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

  9. Bonner, Eric R.

    1. You have accessRestricted Access
      Thiol-Based Regulation of Redox-Active Glutamate-Cysteine Ligase from Arabidopsis thaliana
      Leslie M. Hicks, Rebecca E. Cahoon, Eric R. Bonner, Rebecca S. Rivard, Jeanne Sheffield, Joseph M. Jez
      Plant Cell Aug 2007, 19 (8) 2653-2661; DOI: https://doi.org/10.1105/tpc.107.052597

      This work employs mass spectrometry and site-directed mutagenesis to examine the redox response of Arabidopsis glutamate-cysteine ligase (GCL), which catalyzes the first step in glutathione biosynthesis, and shows that thiol-based regulation of GCL provides a posttranslational mechanism for modulating enzyme activity in response to the in vivo redox environment.

  10. Bos, Jorunn

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

  11. Brambilla, Vittoria

    1. You have accessRestricted Access
      Genetic and Molecular Interactions between BELL1 and MADS Box Factors Support Ovule Development in Arabidopsis
      Vittoria Brambilla, Raffaella Battaglia, Monica Colombo, Simona Masiero, Stefano Bencivenga, Martin M. Kater, Lucia Colombo
      Plant Cell Aug 2007, 19 (8) 2544-2556; DOI: https://doi.org/10.1105/tpc.107.051797

      Ovule development requires a correct balance of factors determining ovule and carpel identity. It is shown that this balance is obtained by complex formation between BELL1 and AGAMOUS. Furthermore, ovule differentiation requires the regulation of the stem cell maintenance gene WUSCHEL, the repression of which is predominantly maintained by BELL1 during ovule development.

  12. Brooks, Eric

    1. You have accessRestricted Access
      Sowing the Seeds of Dialogue: Public Engagement through Plant Science
      David Lally, Eric Brooks, Frans E. Tax, Erin L. Dolan
      Plant Cell Aug 2007, 19 (8) 2311-2319; DOI: https://doi.org/10.1105/tpc.107.053587
  13. Burch, Adrien Y.

    1. You have accessRestricted Access
      The Arabidopsis Transcription Factor MYB77 Modulates Auxin Signal Transduction
      Ryoung Shin, Adrien Y. Burch, Kari A. Huppert, Shiv B. Tiwari, Angus S. Murphy, Tom J. Guilfoyle, Daniel P. Schachtman
      Plant Cell Aug 2007, 19 (8) 2440-2453; DOI: https://doi.org/10.1105/tpc.107.050963

      This study provides new insight into the regulation of auxin-responsive gene expression in plant cells. Biochemical and genetic analyses show that MYB77 interacts with auxin response factors (ARFs) to modulate auxin-responsive gene expression affecting lateral root growth under low potassium conditions.

C

  1. Cahoon, Rebecca E.

    1. You have accessRestricted Access
      Thiol-Based Regulation of Redox-Active Glutamate-Cysteine Ligase from Arabidopsis thaliana
      Leslie M. Hicks, Rebecca E. Cahoon, Eric R. Bonner, Rebecca S. Rivard, Jeanne Sheffield, Joseph M. Jez
      Plant Cell Aug 2007, 19 (8) 2653-2661; DOI: https://doi.org/10.1105/tpc.107.052597

      This work employs mass spectrometry and site-directed mutagenesis to examine the redox response of Arabidopsis glutamate-cysteine ligase (GCL), which catalyzes the first step in glutathione biosynthesis, and shows that thiol-based regulation of GCL provides a posttranslational mechanism for modulating enzyme activity in response to the in vivo redox environment.

  2. Cano, Liliana M.

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

  3. Chaparro-Garcia, Angela

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

  4. Chapman, Kent D.

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  5. Chen, Jyh-Long

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  6. Cheng, Youfa

    1. You have accessRestricted Access
      Auxin Synthesized by the YUCCA Flavin Monooxygenases Is Essential for Embryogenesis and Leaf Formation in Arabidopsis
      Youfa Cheng, Xinhua Dai, Yunde Zhao
      Plant Cell Aug 2007, 19 (8) 2430-2439; DOI: https://doi.org/10.1105/tpc.107.053009

      Genetic analysis of various combinations of yuc mutants and polar auxin transport mutants pin1 and aux1 establish that auxin synthesized by the YUC flavin monooxygenases is essential for the establishment of the basal body region during embryogenesis and the formation of embryonic and postembryonic organs.

  7. Chételat, Aurore

    1. Open Access
      A Downstream Mediator in the Growth Repression Limb of the Jasmonate Pathway
      Yuanxin Yan, Stéphanie Stolz, Aurore Chételat, Philippe Reymond, Marco Pagni, Lucie Dubugnon, Edward E. Farmer
      Plant Cell Aug 2007, 19 (8) 2470-2483; DOI: https://doi.org/10.1105/tpc.107.050708

      Gain- and loss-of-function analyses coupled with physiological assays demonstrate that JASMONATE ASSOCIATED1 acts as a repressor of jasmonic acid–regulated growth retardation.

  8. Chua, Nam-Hai

    1. You have accessRestricted Access
      Targeted Degradation of PSEUDO-RESPONSE REGULATOR5 by an SCFZTL Complex Regulates Clock Function and Photomorphogenesis in Arabidopsis thaliana
      Takatoshi Kiba, Rossana Henriques, Hitoshi Sakakibara, Nam-Hai Chua
      Plant Cell Aug 2007, 19 (8) 2516-2530; DOI: https://doi.org/10.1105/tpc.107.053033

      Protein degradation regulates the Arabidopsis circadian clock. It is shown that the F-box protein ZEITLUPE mediates degradation of PRR5, a putative component of the central oscillator.

  9. Colombo, Lucia

    1. You have accessRestricted Access
      Genetic and Molecular Interactions between BELL1 and MADS Box Factors Support Ovule Development in Arabidopsis
      Vittoria Brambilla, Raffaella Battaglia, Monica Colombo, Simona Masiero, Stefano Bencivenga, Martin M. Kater, Lucia Colombo
      Plant Cell Aug 2007, 19 (8) 2544-2556; DOI: https://doi.org/10.1105/tpc.107.051797

      Ovule development requires a correct balance of factors determining ovule and carpel identity. It is shown that this balance is obtained by complex formation between BELL1 and AGAMOUS. Furthermore, ovule differentiation requires the regulation of the stem cell maintenance gene WUSCHEL, the repression of which is predominantly maintained by BELL1 during ovule development.

  10. Colombo, Monica

    1. You have accessRestricted Access
      Genetic and Molecular Interactions between BELL1 and MADS Box Factors Support Ovule Development in Arabidopsis
      Vittoria Brambilla, Raffaella Battaglia, Monica Colombo, Simona Masiero, Stefano Bencivenga, Martin M. Kater, Lucia Colombo
      Plant Cell Aug 2007, 19 (8) 2544-2556; DOI: https://doi.org/10.1105/tpc.107.051797

      Ovule development requires a correct balance of factors determining ovule and carpel identity. It is shown that this balance is obtained by complex formation between BELL1 and AGAMOUS. Furthermore, ovule differentiation requires the regulation of the stem cell maintenance gene WUSCHEL, the repression of which is predominantly maintained by BELL1 during ovule development.

  11. Cooke, Amy M.

    1. You have accessRestricted Access
      A Ribonuclease III Domain Protein Functions in Group II Intron Splicing in Maize Chloroplasts
      Kenneth P. Watkins, Tiffany S. Kroeger, Amy M. Cooke, Rosalind E. Williams-Carrier, Giulia Friso, Susan E. Belcher, Klaas J. van Wijk, Alice Barkan
      Plant Cell Aug 2007, 19 (8) 2606-2623; DOI: https://doi.org/10.1105/tpc.107.053736

      Chloroplasts harbor numerous group II introns, ribozymes whose activity is facilitated by proteins in vivo. This study shows that RNC1, a protein with catalytically inactive RNAse III domains, promotes the splicing of many group II introns in chloroplasts and is bound to those introns in vivo. RNC1 functions both together with and independently of previously described chloroplast splicing factors.

  12. Corke, Fiona

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

  13. Cotter, Matthew Q.

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

D

  1. Dai, Xinhua

    1. You have accessRestricted Access
      Auxin Synthesized by the YUCCA Flavin Monooxygenases Is Essential for Embryogenesis and Leaf Formation in Arabidopsis
      Youfa Cheng, Xinhua Dai, Yunde Zhao
      Plant Cell Aug 2007, 19 (8) 2430-2439; DOI: https://doi.org/10.1105/tpc.107.053009

      Genetic analysis of various combinations of yuc mutants and polar auxin transport mutants pin1 and aux1 establish that auxin synthesized by the YUC flavin monooxygenases is essential for the establishment of the basal body region during embryogenesis and the formation of embryonic and postembryonic organs.

  2. Dam, Thao

    1. You have accessRestricted Access
      The Maize Floury1 Gene Encodes a Novel Endoplasmic Reticulum Protein Involved in Zein Protein Body Formation
      David R. Holding, Marisa S. Otegui, Bailin Li, Robert B. Meeley, Thao Dam, Brenda G. Hunter, Rudolf Jung, Brian A. Larkins
      Plant Cell Aug 2007, 19 (8) 2569-2582; DOI: https://doi.org/10.1105/tpc.107.053538

      This work reports the cloning of maize Floury1 (Fl1), which encodes a novel zein protein body membrane protein with three predicted transmembrane domains and a C-terminal plant-specific domain of unknown function. It is shown that FL1 likely participates in protein body formation by facilitating the localization of 22-kD α-zein and that this is essential for the formation of vitreous endosperm.

  3. Derbyshire, Paul

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

  4. Dolan, Erin L.

    1. You have accessRestricted Access
      Sowing the Seeds of Dialogue: Public Engagement through Plant Science
      David Lally, Eric Brooks, Frans E. Tax, Erin L. Dolan
      Plant Cell Aug 2007, 19 (8) 2311-2319; DOI: https://doi.org/10.1105/tpc.107.053587
  5. Drews, Gary N.

    1. You have accessRestricted Access
      MYB98 Positively Regulates a Battery of Synergid-Expressed Genes Encoding Filiform Apparatus–Localized Proteins
      Jayson A. Punwani, David S. Rabiger, Gary N. Drews
      Plant Cell Aug 2007, 19 (8) 2557-2568; DOI: https://doi.org/10.1105/tpc.107.052076

      MYB98 encodes an R2R3-MYB transcription factor required for pollen tube guidance and filiform apparatus (FA) formation by the synergid cells of the female gametophyte. This study identifies 16 MYB98-regulated genes, most of which encode Cys-rich proteins. Many of the encoded proteins are secreted into the FA, suggesting a role in FA formation or pollen tube guidance.

  6. Dubugnon, Lucie

    1. Open Access
      A Downstream Mediator in the Growth Repression Limb of the Jasmonate Pathway
      Yuanxin Yan, Stéphanie Stolz, Aurore Chételat, Philippe Reymond, Marco Pagni, Lucie Dubugnon, Edward E. Farmer
      Plant Cell Aug 2007, 19 (8) 2470-2483; DOI: https://doi.org/10.1105/tpc.107.050708

      Gain- and loss-of-function analyses coupled with physiological assays demonstrate that JASMONATE ASSOCIATED1 acts as a repressor of jasmonic acid–regulated growth retardation.

E

  1. Eckardt, Nancy A.

    1. You have accessRestricted Access
      Elucidating the Function of Synergid Cells: A Regulatory Role for MYB98
      Nancy A. Eckardt
      Plant Cell Aug 2007, 19 (8) 2320-2321; DOI: https://doi.org/10.1105/tpc.107.055640
    2. You have accessRestricted Access
      Apical Bud Formation and Dormancy Induction in Poplar
      Nancy A. Eckardt
      Plant Cell Aug 2007, 19 (8) 2322; DOI: https://doi.org/10.1105/tpc.107.190810
    3. You have accessRestricted Access
      Adaptive Evolution among Plant Pathogenic Oomycte RXLR Effector Genes
      Nancy A. Eckardt
      Plant Cell Aug 2007, 19 (8) 2322; DOI: https://doi.org/10.1105/tpc.107.190811
  2. Ecker, Joseph R.

    1. You have accessRestricted Access
      A WD40 Domain Cyclophilin Interacts with Histone H3 and Functions in Gene Repression and Organogenesis in Arabidopsis
      Hong Li, Zengyong He, Guihua Lu, Sung Chul Lee, Jose Alonso, Joseph R. Ecker, Sheng Luan
      Plant Cell Aug 2007, 19 (8) 2403-2416; DOI: https://doi.org/10.1105/tpc.107.053579

      In this study, the WD40-containing cyclophilin CYP71 is identified as an essential factor for normal development in Arabidopsis. CYP71 physically interacts with histone H3 and regulates the level of histone methylation of target loci, thus affecting gene expression. CYP71 is conserved among eukaryotes and may serve as a ubiquitous chromatin remodeling factor involved in epigenetic silencing.

  3. Eiguchi, Mitsugu

    1. You have accessRestricted Access
      A Germ Cell–Specific Gene of the ARGONAUTE Family Is Essential for the Progression of Premeiotic Mitosis and Meiosis during Sporogenesis in Rice
      Ken-Ichi Nonomura, Akane Morohoshi, Mutsuko Nakano, Mitsugu Eiguchi, Akio Miyao, Hirohiko Hirochika, Nori Kurata
      Plant Cell Aug 2007, 19 (8) 2583-2594; DOI: https://doi.org/10.1105/tpc.107.053199

      Cytological analyses of retrotransposon-tagged lines show that the rice MEL1 gene of the ARGONAUTE family plays important roles in germ cell mitosis, faithful meiosis progression, and maintenance of copy number of rDNA repeats.

F

  1. Farmer, Edward E.

    1. Open Access
      A Downstream Mediator in the Growth Repression Limb of the Jasmonate Pathway
      Yuanxin Yan, Stéphanie Stolz, Aurore Chételat, Philippe Reymond, Marco Pagni, Lucie Dubugnon, Edward E. Farmer
      Plant Cell Aug 2007, 19 (8) 2470-2483; DOI: https://doi.org/10.1105/tpc.107.050708

      Gain- and loss-of-function analyses coupled with physiological assays demonstrate that JASMONATE ASSOCIATED1 acts as a repressor of jasmonic acid–regulated growth retardation.

  2. Friso, Giulia

    1. You have accessRestricted Access
      A Ribonuclease III Domain Protein Functions in Group II Intron Splicing in Maize Chloroplasts
      Kenneth P. Watkins, Tiffany S. Kroeger, Amy M. Cooke, Rosalind E. Williams-Carrier, Giulia Friso, Susan E. Belcher, Klaas J. van Wijk, Alice Barkan
      Plant Cell Aug 2007, 19 (8) 2606-2623; DOI: https://doi.org/10.1105/tpc.107.053736

      Chloroplasts harbor numerous group II introns, ribozymes whose activity is facilitated by proteins in vivo. This study shows that RNC1, a protein with catalytically inactive RNAse III domains, promotes the splicing of many group II introns in chloroplasts and is bound to those introns in vivo. RNC1 functions both together with and independently of previously described chloroplast splicing factors.

  3. Fromm, Jörg

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

  4. Fujiwara, Toru

    1. You have accessRestricted Access
      Cell-Type Specificity of the Expression of Os BOR1, a Rice Efflux Boron Transporter Gene, Is Regulated in Response to Boron Availability for Efficient Boron Uptake and Xylem Loading
      Yuko Nakagawa, Hideki Hanaoka, Masaharu Kobayashi, Kazumaru Miyoshi, Kyoko Miwa, Toru Fujiwara
      Plant Cell Aug 2007, 19 (8) 2624-2635; DOI: https://doi.org/10.1105/tpc.106.049015

      Os BOR1 is a plasma membrane–localized efflux boron transporter from rice that is essential for xyelm loading of boron. This study shows that the cell-type specificity of Os BOR1 expression depends on the boron status, providing an example of a mineral-nutrient transporter whose tissue-specific expression pattern changes depending on nutritional conditions.

G

  1. Gingerich, Derek J.

    1. You have accessRestricted Access
      Large-Scale, Lineage-Specific Expansion of a Bric-a-Brac/Tramtrack/Broad Complex Ubiquitin-Ligase Gene Family in Rice
      Derek J. Gingerich, Kousuke Hanada, Shin-Han Shiu, Richard D. Vierstra
      Plant Cell Aug 2007, 19 (8) 2329-2348; DOI: https://doi.org/10.1105/tpc.107.051300

      BTB genes encode E3 ubiquitin-ligase target recognition subunits. This study characterizes the 149-member BTB superfamily in rice and compares it to the 80-member BTB superfamily in Arabidopsis. The rice MATH-BTB family has undergone dramatic expansion accompanied by increased sequence diversification and reduced purifying selection. A possible role in innate immunity is presented.

  2. Gonzalez, Gabriel

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  3. Guilfoyle, Tom J.

    1. You have accessRestricted Access
      The Arabidopsis Transcription Factor MYB77 Modulates Auxin Signal Transduction
      Ryoung Shin, Adrien Y. Burch, Kari A. Huppert, Shiv B. Tiwari, Angus S. Murphy, Tom J. Guilfoyle, Daniel P. Schachtman
      Plant Cell Aug 2007, 19 (8) 2440-2453; DOI: https://doi.org/10.1105/tpc.107.050963

      This study provides new insight into the regulation of auxin-responsive gene expression in plant cells. Biochemical and genetic analyses show that MYB77 interacts with auxin response factors (ARFs) to modulate auxin-responsive gene expression affecting lateral root growth under low potassium conditions.

  4. Gurr, Sarah J.

    1. Open Access
      Magnaporthe grisea Cutinase2 Mediates Appressorium Differentiation and Host Penetration and Is Required for Full Virulence
      Pari Skamnioti, Sarah J. Gurr
      Plant Cell Aug 2007, 19 (8) 2674-2689; DOI: https://doi.org/10.1105/tpc.107.051219

      The rice blast fungus employs secreted cutinase2 (Cut2) for surface sensing, germling differentiation, and host penetration. The cut2 mutant displays anomalous morphogenesis, forms fewer penetration pegs, and is poorly pathogenic. Developmental and pathogenicity defects are restored by synthetic cutin monomers, cAMP and DAG. Cut2 is an upstream activator of cAMP/PKA and DAG/PKC signaling pathways.

H

  1. Hanada, Kousuke

    1. You have accessRestricted Access
      Large-Scale, Lineage-Specific Expansion of a Bric-a-Brac/Tramtrack/Broad Complex Ubiquitin-Ligase Gene Family in Rice
      Derek J. Gingerich, Kousuke Hanada, Shin-Han Shiu, Richard D. Vierstra
      Plant Cell Aug 2007, 19 (8) 2329-2348; DOI: https://doi.org/10.1105/tpc.107.051300

      BTB genes encode E3 ubiquitin-ligase target recognition subunits. This study characterizes the 149-member BTB superfamily in rice and compares it to the 80-member BTB superfamily in Arabidopsis. The rice MATH-BTB family has undergone dramatic expansion accompanied by increased sequence diversification and reduced purifying selection. A possible role in innate immunity is presented.

  2. Hanaoka, Hideki

    1. You have accessRestricted Access
      Cell-Type Specificity of the Expression of Os BOR1, a Rice Efflux Boron Transporter Gene, Is Regulated in Response to Boron Availability for Efficient Boron Uptake and Xylem Loading
      Yuko Nakagawa, Hideki Hanaoka, Masaharu Kobayashi, Kazumaru Miyoshi, Kyoko Miwa, Toru Fujiwara
      Plant Cell Aug 2007, 19 (8) 2624-2635; DOI: https://doi.org/10.1105/tpc.106.049015

      Os BOR1 is a plasma membrane–localized efflux boron transporter from rice that is essential for xyelm loading of boron. This study shows that the cell-type specificity of Os BOR1 expression depends on the boron status, providing an example of a mineral-nutrient transporter whose tissue-specific expression pattern changes depending on nutritional conditions.

  3. Hasenstein, Karl H.

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  4. Hattori, Sayoko

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  5. Hayashi, Hiroaki

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  6. He, Zengyong

    1. You have accessRestricted Access
      A WD40 Domain Cyclophilin Interacts with Histone H3 and Functions in Gene Repression and Organogenesis in Arabidopsis
      Hong Li, Zengyong He, Guihua Lu, Sung Chul Lee, Jose Alonso, Joseph R. Ecker, Sheng Luan
      Plant Cell Aug 2007, 19 (8) 2403-2416; DOI: https://doi.org/10.1105/tpc.107.053579

      In this study, the WD40-containing cyclophilin CYP71 is identified as an essential factor for normal development in Arabidopsis. CYP71 physically interacts with histone H3 and regulates the level of histone methylation of target loci, thus affecting gene expression. CYP71 is conserved among eukaryotes and may serve as a ubiquitous chromatin remodeling factor involved in epigenetic silencing.

  7. Henriques, Rossana

    1. You have accessRestricted Access
      Targeted Degradation of PSEUDO-RESPONSE REGULATOR5 by an SCFZTL Complex Regulates Clock Function and Photomorphogenesis in Arabidopsis thaliana
      Takatoshi Kiba, Rossana Henriques, Hitoshi Sakakibara, Nam-Hai Chua
      Plant Cell Aug 2007, 19 (8) 2516-2530; DOI: https://doi.org/10.1105/tpc.107.053033

      Protein degradation regulates the Arabidopsis circadian clock. It is shown that the F-box protein ZEITLUPE mediates degradation of PRR5, a putative component of the central oscillator.

  8. Hicks, Leslie M.

    1. You have accessRestricted Access
      Thiol-Based Regulation of Redox-Active Glutamate-Cysteine Ligase from Arabidopsis thaliana
      Leslie M. Hicks, Rebecca E. Cahoon, Eric R. Bonner, Rebecca S. Rivard, Jeanne Sheffield, Joseph M. Jez
      Plant Cell Aug 2007, 19 (8) 2653-2661; DOI: https://doi.org/10.1105/tpc.107.052597

      This work employs mass spectrometry and site-directed mutagenesis to examine the redox response of Arabidopsis glutamate-cysteine ligase (GCL), which catalyzes the first step in glutathione biosynthesis, and shows that thiol-based regulation of GCL provides a posttranslational mechanism for modulating enzyme activity in response to the in vivo redox environment.

  9. Hirochika, Hirohiko

    1. You have accessRestricted Access
      A Germ Cell–Specific Gene of the ARGONAUTE Family Is Essential for the Progression of Premeiotic Mitosis and Meiosis during Sporogenesis in Rice
      Ken-Ichi Nonomura, Akane Morohoshi, Mutsuko Nakano, Mitsugu Eiguchi, Akio Miyao, Hirohiko Hirochika, Nori Kurata
      Plant Cell Aug 2007, 19 (8) 2583-2594; DOI: https://doi.org/10.1105/tpc.107.053199

      Cytological analyses of retrotransposon-tagged lines show that the rice MEL1 gene of the ARGONAUTE family plays important roles in germ cell mitosis, faithful meiosis progression, and maintenance of copy number of rDNA repeats.

  10. Ho, Shin-Lon

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  11. Holding, David R.

    1. You have accessRestricted Access
      The Maize Floury1 Gene Encodes a Novel Endoplasmic Reticulum Protein Involved in Zein Protein Body Formation
      David R. Holding, Marisa S. Otegui, Bailin Li, Robert B. Meeley, Thao Dam, Brenda G. Hunter, Rudolf Jung, Brian A. Larkins
      Plant Cell Aug 2007, 19 (8) 2569-2582; DOI: https://doi.org/10.1105/tpc.107.053538

      This work reports the cloning of maize Floury1 (Fl1), which encodes a novel zein protein body membrane protein with three predicted transmembrane domains and a C-terminal plant-specific domain of unknown function. It is shown that FL1 likely participates in protein body formation by facilitating the localization of 22-kD α-zein and that this is essential for the formation of vitreous endosperm.

  12. Houben, Andreas

    1. You have accessRestricted Access
      Engineered Plant Minichromosomes: A Resurrection of B Chromosomes?
      Andreas Houben, Ingo Schubert
      Plant Cell Aug 2007, 19 (8) 2323-2327; DOI: https://doi.org/10.1105/tpc.107.053603
  13. Hsing, Yue-Ie

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  14. Huang, Li-Fen

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  15. Hunter, Brenda G.

    1. You have accessRestricted Access
      The Maize Floury1 Gene Encodes a Novel Endoplasmic Reticulum Protein Involved in Zein Protein Body Formation
      David R. Holding, Marisa S. Otegui, Bailin Li, Robert B. Meeley, Thao Dam, Brenda G. Hunter, Rudolf Jung, Brian A. Larkins
      Plant Cell Aug 2007, 19 (8) 2569-2582; DOI: https://doi.org/10.1105/tpc.107.053538

      This work reports the cloning of maize Floury1 (Fl1), which encodes a novel zein protein body membrane protein with three predicted transmembrane domains and a C-terminal plant-specific domain of unknown function. It is shown that FL1 likely participates in protein body formation by facilitating the localization of 22-kD α-zein and that this is essential for the formation of vitreous endosperm.

  16. Huppert, Kari A.

    1. You have accessRestricted Access
      The Arabidopsis Transcription Factor MYB77 Modulates Auxin Signal Transduction
      Ryoung Shin, Adrien Y. Burch, Kari A. Huppert, Shiv B. Tiwari, Angus S. Murphy, Tom J. Guilfoyle, Daniel P. Schachtman
      Plant Cell Aug 2007, 19 (8) 2440-2453; DOI: https://doi.org/10.1105/tpc.107.050963

      This study provides new insight into the regulation of auxin-responsive gene expression in plant cells. Biochemical and genetic analyses show that MYB77 interacts with auxin response factors (ARFs) to modulate auxin-responsive gene expression affecting lateral root growth under low potassium conditions.

I

  1. Inoue, Eri

    1. You have accessRestricted Access
      The Organization of High-Affinity Ammonium Uptake in Arabidopsis Roots Depends on the Spatial Arrangement and Biochemical Properties of AMT1-Type Transporters
      Lixing Yuan, Dominique Loqué, Soichi Kojima, Sabine Rauch, Keiki Ishiyama, Eri Inoue, Hideki Takahashi, Nicolaus von Wirén
      Plant Cell Aug 2007, 19 (8) 2636-2652; DOI: https://doi.org/10.1105/tpc.107.052134

      Ammonium uptake across the plasma membrane of plant roots is mediated by AMT-type transporters. By generating triple and quadruple amt mutants in Arabidopsis, this study shows that four individual AMTs that differ in cell type–specific expression and substrate affinity contribute to high-affinity ammonium influx with different nitrogen-dependent transport capacities.

  2. Inoue, Kayoko

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  3. Ishida, Tetsuya

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  4. Ishiyama, Keiki

    1. You have accessRestricted Access
      The Organization of High-Affinity Ammonium Uptake in Arabidopsis Roots Depends on the Spatial Arrangement and Biochemical Properties of AMT1-Type Transporters
      Lixing Yuan, Dominique Loqué, Soichi Kojima, Sabine Rauch, Keiki Ishiyama, Eri Inoue, Hideki Takahashi, Nicolaus von Wirén
      Plant Cell Aug 2007, 19 (8) 2636-2652; DOI: https://doi.org/10.1105/tpc.107.052134

      Ammonium uptake across the plasma membrane of plant roots is mediated by AMT-type transporters. By generating triple and quadruple amt mutants in Arabidopsis, this study shows that four individual AMTs that differ in cell type–specific expression and substrate affinity contribute to high-affinity ammonium influx with different nitrogen-dependent transport capacities.

J

  1. Jenkins, Gareth I.

    1. You have accessRestricted Access
      UV-B Promotes Rapid Nuclear Translocation of the Arabidopsis UV-B–Specific Signaling Component UVR8 and Activates Its Function in the Nucleus
      Eirini Kaiserli, Gareth I. Jenkins
      Plant Cell Aug 2007, 19 (8) 2662-2673; DOI: https://doi.org/10.1105/tpc.107.053330

      The Arabidopsis protein UVR8 confers UV protection by orchestrating expression of a range of genes. This article shows that UV-B light stimulates the rapid translocation of UVR8 into the nucleus. However, nuclear translocation is not sufficient for UVR8 function; UV-B is additionally required for UVR8 to regulate gene expression in the nucleus.

  2. Jez, Joseph M.

    1. You have accessRestricted Access
      Thiol-Based Regulation of Redox-Active Glutamate-Cysteine Ligase from Arabidopsis thaliana
      Leslie M. Hicks, Rebecca E. Cahoon, Eric R. Bonner, Rebecca S. Rivard, Jeanne Sheffield, Joseph M. Jez
      Plant Cell Aug 2007, 19 (8) 2653-2661; DOI: https://doi.org/10.1105/tpc.107.052597

      This work employs mass spectrometry and site-directed mutagenesis to examine the redox response of Arabidopsis glutamate-cysteine ligase (GCL), which catalyzes the first step in glutathione biosynthesis, and shows that thiol-based regulation of GCL provides a posttranslational mechanism for modulating enzyme activity in response to the in vivo redox environment.

  3. Jung, Rudolf

    1. You have accessRestricted Access
      The Maize Floury1 Gene Encodes a Novel Endoplasmic Reticulum Protein Involved in Zein Protein Body Formation
      David R. Holding, Marisa S. Otegui, Bailin Li, Robert B. Meeley, Thao Dam, Brenda G. Hunter, Rudolf Jung, Brian A. Larkins
      Plant Cell Aug 2007, 19 (8) 2569-2582; DOI: https://doi.org/10.1105/tpc.107.053538

      This work reports the cloning of maize Floury1 (Fl1), which encodes a novel zein protein body membrane protein with three predicted transmembrane domains and a C-terminal plant-specific domain of unknown function. It is shown that FL1 likely participates in protein body formation by facilitating the localization of 22-kD α-zein and that this is essential for the formation of vitreous endosperm.

K

  1. Kaiserli, Eirini

    1. You have accessRestricted Access
      UV-B Promotes Rapid Nuclear Translocation of the Arabidopsis UV-B–Specific Signaling Component UVR8 and Activates Its Function in the Nucleus
      Eirini Kaiserli, Gareth I. Jenkins
      Plant Cell Aug 2007, 19 (8) 2662-2673; DOI: https://doi.org/10.1105/tpc.107.053330

      The Arabidopsis protein UVR8 confers UV protection by orchestrating expression of a range of genes. This article shows that UV-B light stimulates the rapid translocation of UVR8 into the nucleus. However, nuclear translocation is not sufficient for UVR8 function; UV-B is additionally required for UVR8 to regulate gene expression in the nucleus.

  2. Kamoun, Sophien

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

  3. Kater, Martin M.

    1. You have accessRestricted Access
      Genetic and Molecular Interactions between BELL1 and MADS Box Factors Support Ovule Development in Arabidopsis
      Vittoria Brambilla, Raffaella Battaglia, Monica Colombo, Simona Masiero, Stefano Bencivenga, Martin M. Kater, Lucia Colombo
      Plant Cell Aug 2007, 19 (8) 2544-2556; DOI: https://doi.org/10.1105/tpc.107.051797

      Ovule development requires a correct balance of factors determining ovule and carpel identity. It is shown that this balance is obtained by complex formation between BELL1 and AGAMOUS. Furthermore, ovule differentiation requires the regulation of the stem cell maintenance gene WUSCHEL, the repression of which is predominantly maintained by BELL1 during ovule development.

  4. Kato, Tomohiko

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  5. Kiba, Takatoshi

    1. You have accessRestricted Access
      Targeted Degradation of PSEUDO-RESPONSE REGULATOR5 by an SCFZTL Complex Regulates Clock Function and Photomorphogenesis in Arabidopsis thaliana
      Takatoshi Kiba, Rossana Henriques, Hitoshi Sakakibara, Nam-Hai Chua
      Plant Cell Aug 2007, 19 (8) 2516-2530; DOI: https://doi.org/10.1105/tpc.107.053033

      Protein degradation regulates the Arabidopsis circadian clock. It is shown that the F-box protein ZEITLUPE mediates degradation of PRR5, a putative component of the central oscillator.

  6. Kilaru, Aruna

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  7. Kobayashi, Masaharu

    1. You have accessRestricted Access
      Cell-Type Specificity of the Expression of Os BOR1, a Rice Efflux Boron Transporter Gene, Is Regulated in Response to Boron Availability for Efficient Boron Uptake and Xylem Loading
      Yuko Nakagawa, Hideki Hanaoka, Masaharu Kobayashi, Kazumaru Miyoshi, Kyoko Miwa, Toru Fujiwara
      Plant Cell Aug 2007, 19 (8) 2624-2635; DOI: https://doi.org/10.1105/tpc.106.049015

      Os BOR1 is a plasma membrane–localized efflux boron transporter from rice that is essential for xyelm loading of boron. This study shows that the cell-type specificity of Os BOR1 expression depends on the boron status, providing an example of a mineral-nutrient transporter whose tissue-specific expression pattern changes depending on nutritional conditions.

  8. Kojima, Soichi

    1. You have accessRestricted Access
      The Organization of High-Affinity Ammonium Uptake in Arabidopsis Roots Depends on the Spatial Arrangement and Biochemical Properties of AMT1-Type Transporters
      Lixing Yuan, Dominique Loqué, Soichi Kojima, Sabine Rauch, Keiki Ishiyama, Eri Inoue, Hideki Takahashi, Nicolaus von Wirén
      Plant Cell Aug 2007, 19 (8) 2636-2652; DOI: https://doi.org/10.1105/tpc.107.052134

      Ammonium uptake across the plasma membrane of plant roots is mediated by AMT-type transporters. By generating triple and quadruple amt mutants in Arabidopsis, this study shows that four individual AMTs that differ in cell type–specific expression and substrate affinity contribute to high-affinity ammonium influx with different nitrogen-dependent transport capacities.

  9. Krasileva, Ksenia V.

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

  10. Kroeger, Tiffany S.

    1. You have accessRestricted Access
      A Ribonuclease III Domain Protein Functions in Group II Intron Splicing in Maize Chloroplasts
      Kenneth P. Watkins, Tiffany S. Kroeger, Amy M. Cooke, Rosalind E. Williams-Carrier, Giulia Friso, Susan E. Belcher, Klaas J. van Wijk, Alice Barkan
      Plant Cell Aug 2007, 19 (8) 2606-2623; DOI: https://doi.org/10.1105/tpc.107.053736

      Chloroplasts harbor numerous group II introns, ribozymes whose activity is facilitated by proteins in vivo. This study shows that RNC1, a protein with catalytically inactive RNAse III domains, promotes the splicing of many group II introns in chloroplasts and is bound to those introns in vivo. RNC1 functions both together with and independently of previously described chloroplast splicing factors.

  11. Kurata, Nori

    1. You have accessRestricted Access
      A Germ Cell–Specific Gene of the ARGONAUTE Family Is Essential for the Progression of Premeiotic Mitosis and Meiosis during Sporogenesis in Rice
      Ken-Ichi Nonomura, Akane Morohoshi, Mutsuko Nakano, Mitsugu Eiguchi, Akio Miyao, Hirohiko Hirochika, Nori Kurata
      Plant Cell Aug 2007, 19 (8) 2583-2594; DOI: https://doi.org/10.1105/tpc.107.053199

      Cytological analyses of retrotransposon-tagged lines show that the rice MEL1 gene of the ARGONAUTE family plays important roles in germ cell mitosis, faithful meiosis progression, and maintenance of copy number of rDNA repeats.

  12. Kutter, Claudia

    1. Open Access
      MicroRNA-Mediated Regulation of Stomatal Development in Arabidopsis
      Claudia Kutter, Hanspeter Schöb, Michael Stadler, Frederick Meins Jr., Azeddine Si-Ammour
      Plant Cell Aug 2007, 19 (8) 2417-2429; DOI: https://doi.org/10.1105/tpc.107.050377

      Stomatal development in Arabidopsis involves guard cell differentiation, amplification divisions of precursor cells, and placement of stomata. This work shows that formation of higher-order stomatal complexes depends on regulation of the MADS box protein AGL16 by miR824, a recently evolved microRNA conserved in the Brassicaceae. This interaction could account for some Brassica-specific features of stomatal organization.

L

  1. Lally, David

    1. You have accessRestricted Access
      Sowing the Seeds of Dialogue: Public Engagement through Plant Science
      David Lally, Eric Brooks, Frans E. Tax, Erin L. Dolan
      Plant Cell Aug 2007, 19 (8) 2311-2319; DOI: https://doi.org/10.1105/tpc.107.053587
  2. Larkins, Brian A.

    1. You have accessRestricted Access
      The Maize Floury1 Gene Encodes a Novel Endoplasmic Reticulum Protein Involved in Zein Protein Body Formation
      David R. Holding, Marisa S. Otegui, Bailin Li, Robert B. Meeley, Thao Dam, Brenda G. Hunter, Rudolf Jung, Brian A. Larkins
      Plant Cell Aug 2007, 19 (8) 2569-2582; DOI: https://doi.org/10.1105/tpc.107.053538

      This work reports the cloning of maize Floury1 (Fl1), which encodes a novel zein protein body membrane protein with three predicted transmembrane domains and a C-terminal plant-specific domain of unknown function. It is shown that FL1 likely participates in protein body formation by facilitating the localization of 22-kD α-zein and that this is essential for the formation of vitreous endosperm.

  3. Lee, Kuo-Wei

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  4. Lee, Sung Chul

    1. You have accessRestricted Access
      A WD40 Domain Cyclophilin Interacts with Histone H3 and Functions in Gene Repression and Organogenesis in Arabidopsis
      Hong Li, Zengyong He, Guihua Lu, Sung Chul Lee, Jose Alonso, Joseph R. Ecker, Sheng Luan
      Plant Cell Aug 2007, 19 (8) 2403-2416; DOI: https://doi.org/10.1105/tpc.107.053579

      In this study, the WD40-containing cyclophilin CYP71 is identified as an essential factor for normal development in Arabidopsis. CYP71 physically interacts with histone H3 and regulates the level of histone methylation of target loci, thus affecting gene expression. CYP71 is conserved among eukaryotes and may serve as a ubiquitous chromatin remodeling factor involved in epigenetic silencing.

  5. Lee, Yuh-Ru Julie

    1. You have accessRestricted Access
      Two Arabidopsis Phragmoplast-Associated Kinesins Play a Critical Role in Cytokinesis during Male Gametogenesis
      Yuh-Ru Julie Lee, Yan Li, Bo Liu
      Plant Cell Aug 2007, 19 (8) 2595-2605; DOI: https://doi.org/10.1105/tpc.107.050716

      Two homologous microtubule motor kinesins in Arabidopsis, Kinesin-12A and Kinesin-12B, localize at juxtaposing plus ends of antiparallel microtubules in the middle of the phragmoplast. Postmeiotic development of the male gametophyte is severely inhibited in the absence of both kinesins, indicating that they jointly play a key role in the organization of phragmoplast microtubules during cytokinesis in the microspore.

  6. Li, Bailin

    1. You have accessRestricted Access
      The Maize Floury1 Gene Encodes a Novel Endoplasmic Reticulum Protein Involved in Zein Protein Body Formation
      David R. Holding, Marisa S. Otegui, Bailin Li, Robert B. Meeley, Thao Dam, Brenda G. Hunter, Rudolf Jung, Brian A. Larkins
      Plant Cell Aug 2007, 19 (8) 2569-2582; DOI: https://doi.org/10.1105/tpc.107.053538

      This work reports the cloning of maize Floury1 (Fl1), which encodes a novel zein protein body membrane protein with three predicted transmembrane domains and a C-terminal plant-specific domain of unknown function. It is shown that FL1 likely participates in protein body formation by facilitating the localization of 22-kD α-zein and that this is essential for the formation of vitreous endosperm.

  7. Li, Hong

    1. You have accessRestricted Access
      A WD40 Domain Cyclophilin Interacts with Histone H3 and Functions in Gene Repression and Organogenesis in Arabidopsis
      Hong Li, Zengyong He, Guihua Lu, Sung Chul Lee, Jose Alonso, Joseph R. Ecker, Sheng Luan
      Plant Cell Aug 2007, 19 (8) 2403-2416; DOI: https://doi.org/10.1105/tpc.107.053579

      In this study, the WD40-containing cyclophilin CYP71 is identified as an essential factor for normal development in Arabidopsis. CYP71 physically interacts with histone H3 and regulates the level of histone methylation of target loci, thus affecting gene expression. CYP71 is conserved among eukaryotes and may serve as a ubiquitous chromatin remodeling factor involved in epigenetic silencing.

  8. Li, Yan

    1. You have accessRestricted Access
      Two Arabidopsis Phragmoplast-Associated Kinesins Play a Critical Role in Cytokinesis during Male Gametogenesis
      Yuh-Ru Julie Lee, Yan Li, Bo Liu
      Plant Cell Aug 2007, 19 (8) 2595-2605; DOI: https://doi.org/10.1105/tpc.107.050716

      Two homologous microtubule motor kinesins in Arabidopsis, Kinesin-12A and Kinesin-12B, localize at juxtaposing plus ends of antiparallel microtubules in the middle of the phragmoplast. Postmeiotic development of the male gametophyte is severely inhibited in the absence of both kinesins, indicating that they jointly play a key role in the organization of phragmoplast microtubules during cytokinesis in the microspore.

  9. Li, Yunhai

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

  10. Lin, Chih-Cheng

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  11. Liu, Bo

    1. You have accessRestricted Access
      Two Arabidopsis Phragmoplast-Associated Kinesins Play a Critical Role in Cytokinesis during Male Gametogenesis
      Yuh-Ru Julie Lee, Yan Li, Bo Liu
      Plant Cell Aug 2007, 19 (8) 2595-2605; DOI: https://doi.org/10.1105/tpc.107.050716

      Two homologous microtubule motor kinesins in Arabidopsis, Kinesin-12A and Kinesin-12B, localize at juxtaposing plus ends of antiparallel microtubules in the middle of the phragmoplast. Postmeiotic development of the male gametophyte is severely inhibited in the absence of both kinesins, indicating that they jointly play a key role in the organization of phragmoplast microtubules during cytokinesis in the microspore.

  12. Liu, Hsin-Ju

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  13. Loqué, Dominique

    1. You have accessRestricted Access
      The Organization of High-Affinity Ammonium Uptake in Arabidopsis Roots Depends on the Spatial Arrangement and Biochemical Properties of AMT1-Type Transporters
      Lixing Yuan, Dominique Loqué, Soichi Kojima, Sabine Rauch, Keiki Ishiyama, Eri Inoue, Hideki Takahashi, Nicolaus von Wirén
      Plant Cell Aug 2007, 19 (8) 2636-2652; DOI: https://doi.org/10.1105/tpc.107.052134

      Ammonium uptake across the plasma membrane of plant roots is mediated by AMT-type transporters. By generating triple and quadruple amt mutants in Arabidopsis, this study shows that four individual AMTs that differ in cell type–specific expression and substrate affinity contribute to high-affinity ammonium influx with different nitrogen-dependent transport capacities.

  14. Lu, Chung-An

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  15. Lu, Guihua

    1. You have accessRestricted Access
      A WD40 Domain Cyclophilin Interacts with Histone H3 and Functions in Gene Repression and Organogenesis in Arabidopsis
      Hong Li, Zengyong He, Guihua Lu, Sung Chul Lee, Jose Alonso, Joseph R. Ecker, Sheng Luan
      Plant Cell Aug 2007, 19 (8) 2403-2416; DOI: https://doi.org/10.1105/tpc.107.053579

      In this study, the WD40-containing cyclophilin CYP71 is identified as an essential factor for normal development in Arabidopsis. CYP71 physically interacts with histone H3 and regulates the level of histone methylation of target loci, thus affecting gene expression. CYP71 is conserved among eukaryotes and may serve as a ubiquitous chromatin remodeling factor involved in epigenetic silencing.

  16. Luan, Sheng

    1. You have accessRestricted Access
      A WD40 Domain Cyclophilin Interacts with Histone H3 and Functions in Gene Repression and Organogenesis in Arabidopsis
      Hong Li, Zengyong He, Guihua Lu, Sung Chul Lee, Jose Alonso, Joseph R. Ecker, Sheng Luan
      Plant Cell Aug 2007, 19 (8) 2403-2416; DOI: https://doi.org/10.1105/tpc.107.053579

      In this study, the WD40-containing cyclophilin CYP71 is identified as an essential factor for normal development in Arabidopsis. CYP71 physically interacts with histone H3 and regulates the level of histone methylation of target loci, thus affecting gene expression. CYP71 is conserved among eukaryotes and may serve as a ubiquitous chromatin remodeling factor involved in epigenetic silencing.

M

  1. Masiero, Simona

    1. You have accessRestricted Access
      Genetic and Molecular Interactions between BELL1 and MADS Box Factors Support Ovule Development in Arabidopsis
      Vittoria Brambilla, Raffaella Battaglia, Monica Colombo, Simona Masiero, Stefano Bencivenga, Martin M. Kater, Lucia Colombo
      Plant Cell Aug 2007, 19 (8) 2544-2556; DOI: https://doi.org/10.1105/tpc.107.051797

      Ovule development requires a correct balance of factors determining ovule and carpel identity. It is shown that this balance is obtained by complex formation between BELL1 and AGAMOUS. Furthermore, ovule differentiation requires the regulation of the stem cell maintenance gene WUSCHEL, the repression of which is predominantly maintained by BELL1 during ovule development.

  2. Meeley, Robert B.

    1. You have accessRestricted Access
      The Maize Floury1 Gene Encodes a Novel Endoplasmic Reticulum Protein Involved in Zein Protein Body Formation
      David R. Holding, Marisa S. Otegui, Bailin Li, Robert B. Meeley, Thao Dam, Brenda G. Hunter, Rudolf Jung, Brian A. Larkins
      Plant Cell Aug 2007, 19 (8) 2569-2582; DOI: https://doi.org/10.1105/tpc.107.053538

      This work reports the cloning of maize Floury1 (Fl1), which encodes a novel zein protein body membrane protein with three predicted transmembrane domains and a C-terminal plant-specific domain of unknown function. It is shown that FL1 likely participates in protein body formation by facilitating the localization of 22-kD α-zein and that this is essential for the formation of vitreous endosperm.

  3. Meins, Frederick

    1. Open Access
      MicroRNA-Mediated Regulation of Stomatal Development in Arabidopsis
      Claudia Kutter, Hanspeter Schöb, Michael Stadler, Frederick Meins Jr., Azeddine Si-Ammour
      Plant Cell Aug 2007, 19 (8) 2417-2429; DOI: https://doi.org/10.1105/tpc.107.050377

      Stomatal development in Arabidopsis involves guard cell differentiation, amplification divisions of precursor cells, and placement of stomata. This work shows that formation of higher-order stomatal complexes depends on regulation of the MADS box protein AGL16 by miR824, a recently evolved microRNA conserved in the Brassicaceae. This interaction could account for some Brassica-specific features of stomatal organization.

  4. Merali, Zara

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

  5. Miwa, Kyoko

    1. You have accessRestricted Access
      Cell-Type Specificity of the Expression of Os BOR1, a Rice Efflux Boron Transporter Gene, Is Regulated in Response to Boron Availability for Efficient Boron Uptake and Xylem Loading
      Yuko Nakagawa, Hideki Hanaoka, Masaharu Kobayashi, Kazumaru Miyoshi, Kyoko Miwa, Toru Fujiwara
      Plant Cell Aug 2007, 19 (8) 2624-2635; DOI: https://doi.org/10.1105/tpc.106.049015

      Os BOR1 is a plasma membrane–localized efflux boron transporter from rice that is essential for xyelm loading of boron. This study shows that the cell-type specificity of Os BOR1 expression depends on the boron status, providing an example of a mineral-nutrient transporter whose tissue-specific expression pattern changes depending on nutritional conditions.

  6. Miyao, Akio

    1. You have accessRestricted Access
      A Germ Cell–Specific Gene of the ARGONAUTE Family Is Essential for the Progression of Premeiotic Mitosis and Meiosis during Sporogenesis in Rice
      Ken-Ichi Nonomura, Akane Morohoshi, Mutsuko Nakano, Mitsugu Eiguchi, Akio Miyao, Hirohiko Hirochika, Nori Kurata
      Plant Cell Aug 2007, 19 (8) 2583-2594; DOI: https://doi.org/10.1105/tpc.107.053199

      Cytological analyses of retrotransposon-tagged lines show that the rice MEL1 gene of the ARGONAUTE family plays important roles in germ cell mitosis, faithful meiosis progression, and maintenance of copy number of rDNA repeats.

  7. Miyoshi, Kazumaru

    1. You have accessRestricted Access
      Cell-Type Specificity of the Expression of Os BOR1, a Rice Efflux Boron Transporter Gene, Is Regulated in Response to Boron Availability for Efficient Boron Uptake and Xylem Loading
      Yuko Nakagawa, Hideki Hanaoka, Masaharu Kobayashi, Kazumaru Miyoshi, Kyoko Miwa, Toru Fujiwara
      Plant Cell Aug 2007, 19 (8) 2624-2635; DOI: https://doi.org/10.1105/tpc.106.049015

      Os BOR1 is a plasma membrane–localized efflux boron transporter from rice that is essential for xyelm loading of boron. This study shows that the cell-type specificity of Os BOR1 expression depends on the boron status, providing an example of a mineral-nutrient transporter whose tissue-specific expression pattern changes depending on nutritional conditions.

  8. Morgan, William

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

  9. Morohoshi, Akane

    1. You have accessRestricted Access
      A Germ Cell–Specific Gene of the ARGONAUTE Family Is Essential for the Progression of Premeiotic Mitosis and Meiosis during Sporogenesis in Rice
      Ken-Ichi Nonomura, Akane Morohoshi, Mutsuko Nakano, Mitsugu Eiguchi, Akio Miyao, Hirohiko Hirochika, Nori Kurata
      Plant Cell Aug 2007, 19 (8) 2583-2594; DOI: https://doi.org/10.1105/tpc.107.053199

      Cytological analyses of retrotransposon-tagged lines show that the rice MEL1 gene of the ARGONAUTE family plays important roles in germ cell mitosis, faithful meiosis progression, and maintenance of copy number of rDNA repeats.

  10. Morreel, Kris

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

  11. Motes, Christy M.

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  12. Murphy, Angus S.

    1. You have accessRestricted Access
      The Arabidopsis Transcription Factor MYB77 Modulates Auxin Signal Transduction
      Ryoung Shin, Adrien Y. Burch, Kari A. Huppert, Shiv B. Tiwari, Angus S. Murphy, Tom J. Guilfoyle, Daniel P. Schachtman
      Plant Cell Aug 2007, 19 (8) 2440-2453; DOI: https://doi.org/10.1105/tpc.107.050963

      This study provides new insight into the regulation of auxin-responsive gene expression in plant cells. Biochemical and genetic analyses show that MYB77 interacts with auxin response factors (ARFs) to modulate auxin-responsive gene expression affecting lateral root growth under low potassium conditions.

N

  1. Nakagawa, Yuko

    1. You have accessRestricted Access
      Cell-Type Specificity of the Expression of Os BOR1, a Rice Efflux Boron Transporter Gene, Is Regulated in Response to Boron Availability for Efficient Boron Uptake and Xylem Loading
      Yuko Nakagawa, Hideki Hanaoka, Masaharu Kobayashi, Kazumaru Miyoshi, Kyoko Miwa, Toru Fujiwara
      Plant Cell Aug 2007, 19 (8) 2624-2635; DOI: https://doi.org/10.1105/tpc.106.049015

      Os BOR1 is a plasma membrane–localized efflux boron transporter from rice that is essential for xyelm loading of boron. This study shows that the cell-type specificity of Os BOR1 expression depends on the boron status, providing an example of a mineral-nutrient transporter whose tissue-specific expression pattern changes depending on nutritional conditions.

  2. Nakano, Mutsuko

    1. You have accessRestricted Access
      A Germ Cell–Specific Gene of the ARGONAUTE Family Is Essential for the Progression of Premeiotic Mitosis and Meiosis during Sporogenesis in Rice
      Ken-Ichi Nonomura, Akane Morohoshi, Mutsuko Nakano, Mitsugu Eiguchi, Akio Miyao, Hirohiko Hirochika, Nori Kurata
      Plant Cell Aug 2007, 19 (8) 2583-2594; DOI: https://doi.org/10.1105/tpc.107.053199

      Cytological analyses of retrotransposon-tagged lines show that the rice MEL1 gene of the ARGONAUTE family plays important roles in germ cell mitosis, faithful meiosis progression, and maintenance of copy number of rDNA repeats.

  3. Nonomura, Ken-Ichi

    1. You have accessRestricted Access
      A Germ Cell–Specific Gene of the ARGONAUTE Family Is Essential for the Progression of Premeiotic Mitosis and Meiosis during Sporogenesis in Rice
      Ken-Ichi Nonomura, Akane Morohoshi, Mutsuko Nakano, Mitsugu Eiguchi, Akio Miyao, Hirohiko Hirochika, Nori Kurata
      Plant Cell Aug 2007, 19 (8) 2583-2594; DOI: https://doi.org/10.1105/tpc.107.053199

      Cytological analyses of retrotransposon-tagged lines show that the rice MEL1 gene of the ARGONAUTE family plays important roles in germ cell mitosis, faithful meiosis progression, and maintenance of copy number of rDNA repeats.

O

  1. Okada, Kiyotaka

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  2. Otegui, Marisa S.

    1. You have accessRestricted Access
      The Maize Floury1 Gene Encodes a Novel Endoplasmic Reticulum Protein Involved in Zein Protein Body Formation
      David R. Holding, Marisa S. Otegui, Bailin Li, Robert B. Meeley, Thao Dam, Brenda G. Hunter, Rudolf Jung, Brian A. Larkins
      Plant Cell Aug 2007, 19 (8) 2569-2582; DOI: https://doi.org/10.1105/tpc.107.053538

      This work reports the cloning of maize Floury1 (Fl1), which encodes a novel zein protein body membrane protein with three predicted transmembrane domains and a C-terminal plant-specific domain of unknown function. It is shown that FL1 likely participates in protein body formation by facilitating the localization of 22-kD α-zein and that this is essential for the formation of vitreous endosperm.

P

  1. Pagni, Marco

    1. Open Access
      A Downstream Mediator in the Growth Repression Limb of the Jasmonate Pathway
      Yuanxin Yan, Stéphanie Stolz, Aurore Chételat, Philippe Reymond, Marco Pagni, Lucie Dubugnon, Edward E. Farmer
      Plant Cell Aug 2007, 19 (8) 2470-2483; DOI: https://doi.org/10.1105/tpc.107.050708

      Gain- and loss-of-function analyses coupled with physiological assays demonstrate that JASMONATE ASSOCIATED1 acts as a repressor of jasmonic acid–regulated growth retardation.

  2. Punwani, Jayson A.

    1. You have accessRestricted Access
      MYB98 Positively Regulates a Battery of Synergid-Expressed Genes Encoding Filiform Apparatus–Localized Proteins
      Jayson A. Punwani, David S. Rabiger, Gary N. Drews
      Plant Cell Aug 2007, 19 (8) 2557-2568; DOI: https://doi.org/10.1105/tpc.107.052076

      MYB98 encodes an R2R3-MYB transcription factor required for pollen tube guidance and filiform apparatus (FA) formation by the synergid cells of the female gametophyte. This study identifies 16 MYB98-regulated genes, most of which encode Cys-rich proteins. Many of the encoded proteins are secreted into the FA, suggesting a role in FA formation or pollen tube guidance.

R

  1. Rabiger, David S.

    1. You have accessRestricted Access
      MYB98 Positively Regulates a Battery of Synergid-Expressed Genes Encoding Filiform Apparatus–Localized Proteins
      Jayson A. Punwani, David S. Rabiger, Gary N. Drews
      Plant Cell Aug 2007, 19 (8) 2557-2568; DOI: https://doi.org/10.1105/tpc.107.052076

      MYB98 encodes an R2R3-MYB transcription factor required for pollen tube guidance and filiform apparatus (FA) formation by the synergid cells of the female gametophyte. This study identifies 16 MYB98-regulated genes, most of which encode Cys-rich proteins. Many of the encoded proteins are secreted into the FA, suggesting a role in FA formation or pollen tube guidance.

  2. Rauch, Sabine

    1. You have accessRestricted Access
      The Organization of High-Affinity Ammonium Uptake in Arabidopsis Roots Depends on the Spatial Arrangement and Biochemical Properties of AMT1-Type Transporters
      Lixing Yuan, Dominique Loqué, Soichi Kojima, Sabine Rauch, Keiki Ishiyama, Eri Inoue, Hideki Takahashi, Nicolaus von Wirén
      Plant Cell Aug 2007, 19 (8) 2636-2652; DOI: https://doi.org/10.1105/tpc.107.052134

      Ammonium uptake across the plasma membrane of plant roots is mediated by AMT-type transporters. By generating triple and quadruple amt mutants in Arabidopsis, this study shows that four individual AMTs that differ in cell type–specific expression and substrate affinity contribute to high-affinity ammonium influx with different nitrogen-dependent transport capacities.

  3. Reymond, Philippe

    1. Open Access
      A Downstream Mediator in the Growth Repression Limb of the Jasmonate Pathway
      Yuanxin Yan, Stéphanie Stolz, Aurore Chételat, Philippe Reymond, Marco Pagni, Lucie Dubugnon, Edward E. Farmer
      Plant Cell Aug 2007, 19 (8) 2470-2483; DOI: https://doi.org/10.1105/tpc.107.050708

      Gain- and loss-of-function analyses coupled with physiological assays demonstrate that JASMONATE ASSOCIATED1 acts as a repressor of jasmonic acid–regulated growth retardation.

  4. Rivard, Rebecca S.

    1. You have accessRestricted Access
      Thiol-Based Regulation of Redox-Active Glutamate-Cysteine Ligase from Arabidopsis thaliana
      Leslie M. Hicks, Rebecca E. Cahoon, Eric R. Bonner, Rebecca S. Rivard, Jeanne Sheffield, Joseph M. Jez
      Plant Cell Aug 2007, 19 (8) 2653-2661; DOI: https://doi.org/10.1105/tpc.107.052597

      This work employs mass spectrometry and site-directed mutagenesis to examine the redox response of Arabidopsis glutamate-cysteine ligase (GCL), which catalyzes the first step in glutathione biosynthesis, and shows that thiol-based regulation of GCL provides a posttranslational mechanism for modulating enzyme activity in response to the in vivo redox environment.

  5. Rohde, Antje

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

  6. Rombauts, Stephane

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

  7. Ruttink, Tom

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

  8. Ryden, Peter

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

S

  1. Sakakibara, Hitoshi

    1. You have accessRestricted Access
      Targeted Degradation of PSEUDO-RESPONSE REGULATOR5 by an SCFZTL Complex Regulates Clock Function and Photomorphogenesis in Arabidopsis thaliana
      Takatoshi Kiba, Rossana Henriques, Hitoshi Sakakibara, Nam-Hai Chua
      Plant Cell Aug 2007, 19 (8) 2516-2530; DOI: https://doi.org/10.1105/tpc.107.053033

      Protein degradation regulates the Arabidopsis circadian clock. It is shown that the F-box protein ZEITLUPE mediates degradation of PRR5, a putative component of the central oscillator.

  2. Sano, Ryosuke

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  3. Sato, Shusei

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  4. Schachtman, Daniel P.

    1. You have accessRestricted Access
      The Arabidopsis Transcription Factor MYB77 Modulates Auxin Signal Transduction
      Ryoung Shin, Adrien Y. Burch, Kari A. Huppert, Shiv B. Tiwari, Angus S. Murphy, Tom J. Guilfoyle, Daniel P. Schachtman
      Plant Cell Aug 2007, 19 (8) 2440-2453; DOI: https://doi.org/10.1105/tpc.107.050963

      This study provides new insight into the regulation of auxin-responsive gene expression in plant cells. Biochemical and genetic analyses show that MYB77 interacts with auxin response factors (ARFs) to modulate auxin-responsive gene expression affecting lateral root growth under low potassium conditions.

  5. Schöb, Hanspeter

    1. Open Access
      MicroRNA-Mediated Regulation of Stomatal Development in Arabidopsis
      Claudia Kutter, Hanspeter Schöb, Michael Stadler, Frederick Meins Jr., Azeddine Si-Ammour
      Plant Cell Aug 2007, 19 (8) 2417-2429; DOI: https://doi.org/10.1105/tpc.107.050377

      Stomatal development in Arabidopsis involves guard cell differentiation, amplification divisions of precursor cells, and placement of stomata. This work shows that formation of higher-order stomatal complexes depends on regulation of the MADS box protein AGL16 by miR824, a recently evolved microRNA conserved in the Brassicaceae. This interaction could account for some Brassica-specific features of stomatal organization.

  6. Schubert, Ingo

    1. You have accessRestricted Access
      Engineered Plant Minichromosomes: A Resurrection of B Chromosomes?
      Andreas Houben, Ingo Schubert
      Plant Cell Aug 2007, 19 (8) 2323-2327; DOI: https://doi.org/10.1105/tpc.107.053603
  7. Sheffield, Jeanne

    1. You have accessRestricted Access
      Thiol-Based Regulation of Redox-Active Glutamate-Cysteine Ligase from Arabidopsis thaliana
      Leslie M. Hicks, Rebecca E. Cahoon, Eric R. Bonner, Rebecca S. Rivard, Jeanne Sheffield, Joseph M. Jez
      Plant Cell Aug 2007, 19 (8) 2653-2661; DOI: https://doi.org/10.1105/tpc.107.052597

      This work employs mass spectrometry and site-directed mutagenesis to examine the redox response of Arabidopsis glutamate-cysteine ligase (GCL), which catalyzes the first step in glutathione biosynthesis, and shows that thiol-based regulation of GCL provides a posttranslational mechanism for modulating enzyme activity in response to the in vivo redox environment.

  8. Shibata, Daisuke

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  9. Shin, Ryoung

    1. You have accessRestricted Access
      The Arabidopsis Transcription Factor MYB77 Modulates Auxin Signal Transduction
      Ryoung Shin, Adrien Y. Burch, Kari A. Huppert, Shiv B. Tiwari, Angus S. Murphy, Tom J. Guilfoyle, Daniel P. Schachtman
      Plant Cell Aug 2007, 19 (8) 2440-2453; DOI: https://doi.org/10.1105/tpc.107.050963

      This study provides new insight into the regulation of auxin-responsive gene expression in plant cells. Biochemical and genetic analyses show that MYB77 interacts with auxin response factors (ARFs) to modulate auxin-responsive gene expression affecting lateral root growth under low potassium conditions.

  10. Shirano, Yumiko

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  11. Shiu, Shin-Han

    1. You have accessRestricted Access
      Large-Scale, Lineage-Specific Expansion of a Bric-a-Brac/Tramtrack/Broad Complex Ubiquitin-Ligase Gene Family in Rice
      Derek J. Gingerich, Kousuke Hanada, Shin-Han Shiu, Richard D. Vierstra
      Plant Cell Aug 2007, 19 (8) 2329-2348; DOI: https://doi.org/10.1105/tpc.107.051300

      BTB genes encode E3 ubiquitin-ligase target recognition subunits. This study characterizes the 149-member BTB superfamily in rice and compares it to the 80-member BTB superfamily in Arabidopsis. The rice MATH-BTB family has undergone dramatic expansion accompanied by increased sequence diversification and reduced purifying selection. A possible role in innate immunity is presented.

  12. Si-Ammour, Azeddine

    1. Open Access
      MicroRNA-Mediated Regulation of Stomatal Development in Arabidopsis
      Claudia Kutter, Hanspeter Schöb, Michael Stadler, Frederick Meins Jr., Azeddine Si-Ammour
      Plant Cell Aug 2007, 19 (8) 2417-2429; DOI: https://doi.org/10.1105/tpc.107.050377

      Stomatal development in Arabidopsis involves guard cell differentiation, amplification divisions of precursor cells, and placement of stomata. This work shows that formation of higher-order stomatal complexes depends on regulation of the MADS box protein AGL16 by miR824, a recently evolved microRNA conserved in the Brassicaceae. This interaction could account for some Brassica-specific features of stomatal organization.

  13. Skamnioti, Pari

    1. Open Access
      Magnaporthe grisea Cutinase2 Mediates Appressorium Differentiation and Host Penetration and Is Required for Full Virulence
      Pari Skamnioti, Sarah J. Gurr
      Plant Cell Aug 2007, 19 (8) 2674-2689; DOI: https://doi.org/10.1105/tpc.107.051219

      The rice blast fungus employs secreted cutinase2 (Cut2) for surface sensing, germling differentiation, and host penetration. The cut2 mutant displays anomalous morphogenesis, forms fewer penetration pegs, and is poorly pathogenic. Developmental and pathogenicity defects are restored by synthetic cutin monomers, cAMP and DAG. Cut2 is an upstream activator of cAMP/PKA and DAG/PKC signaling pathways.

  14. Smith, Caroline

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

  15. Springer, Nathan M.

    1. You have accessRestricted Access
      Allele-Specific Expression Patterns Reveal Biases and Embryo-Specific Parent-of-Origin Effects in Hybrid Maize
      Nathan M. Springer, Robert M. Stupar
      Plant Cell Aug 2007, 19 (8) 2391-2402; DOI: https://doi.org/10.1105/tpc.107.052258

      The relative expression level of maize alleles was assayed in multiple developmental stages and multiple hybrid genotypes. Assessment of transcriptional variation, cis/trans-regulatory variation, tissue-specific allelic differences, and parent-of-origin effects provide evidence for prevalent cis-acting regulatory variation that contributes to differential gene expression between genotypes and tissues.

  16. Stadler, Michael

    1. Open Access
      MicroRNA-Mediated Regulation of Stomatal Development in Arabidopsis
      Claudia Kutter, Hanspeter Schöb, Michael Stadler, Frederick Meins Jr., Azeddine Si-Ammour
      Plant Cell Aug 2007, 19 (8) 2417-2429; DOI: https://doi.org/10.1105/tpc.107.050377

      Stomatal development in Arabidopsis involves guard cell differentiation, amplification divisions of precursor cells, and placement of stomata. This work shows that formation of higher-order stomatal complexes depends on regulation of the MADS box protein AGL16 by miR824, a recently evolved microRNA conserved in the Brassicaceae. This interaction could account for some Brassica-specific features of stomatal organization.

  17. Staskawicz, Brian J.

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

  18. Stolz, Stéphanie

    1. Open Access
      A Downstream Mediator in the Growth Repression Limb of the Jasmonate Pathway
      Yuanxin Yan, Stéphanie Stolz, Aurore Chételat, Philippe Reymond, Marco Pagni, Lucie Dubugnon, Edward E. Farmer
      Plant Cell Aug 2007, 19 (8) 2470-2483; DOI: https://doi.org/10.1105/tpc.107.050708

      Gain- and loss-of-function analyses coupled with physiological assays demonstrate that JASMONATE ASSOCIATED1 acts as a repressor of jasmonic acid–regulated growth retardation.

  19. Storme, Véronique

    1. You have accessRestricted Access
      A Molecular Timetable for Apical Bud Formation and Dormancy Induction in Poplar
      Tom Ruttink, Matthias Arend, Kris Morreel, Véronique Storme, Stephane Rombauts, Jörg Fromm, Rishikesh P. Bhalerao, Wout Boerjan, Antje Rohde
      Plant Cell Aug 2007, 19 (8) 2370-2390; DOI: https://doi.org/10.1105/tpc.107.052811

      The transition from growth to dormancy is part of the seasonal growth cycle in perennial plants. In a systems biology approach involving transcriptome, metabolome, and electron microscopy analyses, autumnal bud development is dissected into its molecular programs. A comparative approach identified common genes for growth-to-dormancy transitions across different plant organs.

  20. Stupar, Robert M.

    1. You have accessRestricted Access
      Allele-Specific Expression Patterns Reveal Biases and Embryo-Specific Parent-of-Origin Effects in Hybrid Maize
      Nathan M. Springer, Robert M. Stupar
      Plant Cell Aug 2007, 19 (8) 2391-2402; DOI: https://doi.org/10.1105/tpc.107.052258

      The relative expression level of maize alleles was assayed in multiple developmental stages and multiple hybrid genotypes. Assessment of transcriptional variation, cis/trans-regulatory variation, tissue-specific allelic differences, and parent-of-origin effects provide evidence for prevalent cis-acting regulatory variation that contributes to differential gene expression between genotypes and tissues.

T

  1. Tabata, Satoshi

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  2. Takahashi, Hideki

    1. You have accessRestricted Access
      The Organization of High-Affinity Ammonium Uptake in Arabidopsis Roots Depends on the Spatial Arrangement and Biochemical Properties of AMT1-Type Transporters
      Lixing Yuan, Dominique Loqué, Soichi Kojima, Sabine Rauch, Keiki Ishiyama, Eri Inoue, Hideki Takahashi, Nicolaus von Wirén
      Plant Cell Aug 2007, 19 (8) 2636-2652; DOI: https://doi.org/10.1105/tpc.107.052134

      Ammonium uptake across the plasma membrane of plant roots is mediated by AMT-type transporters. By generating triple and quadruple amt mutants in Arabidopsis, this study shows that four individual AMTs that differ in cell type–specific expression and substrate affinity contribute to high-affinity ammonium influx with different nitrogen-dependent transport capacities.

  3. Tang, Yuhong

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  4. Tax, Frans E.

    1. You have accessRestricted Access
      Sowing the Seeds of Dialogue: Public Engagement through Plant Science
      David Lally, Eric Brooks, Frans E. Tax, Erin L. Dolan
      Plant Cell Aug 2007, 19 (8) 2311-2319; DOI: https://doi.org/10.1105/tpc.107.053587
  5. Teaster, Neal D.

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  6. Tiwari, Shiv B.

    1. You have accessRestricted Access
      The Arabidopsis Transcription Factor MYB77 Modulates Auxin Signal Transduction
      Ryoung Shin, Adrien Y. Burch, Kari A. Huppert, Shiv B. Tiwari, Angus S. Murphy, Tom J. Guilfoyle, Daniel P. Schachtman
      Plant Cell Aug 2007, 19 (8) 2440-2453; DOI: https://doi.org/10.1105/tpc.107.050963

      This study provides new insight into the regulation of auxin-responsive gene expression in plant cells. Biochemical and genetic analyses show that MYB77 interacts with auxin response factors (ARFs) to modulate auxin-responsive gene expression affecting lateral root growth under low potassium conditions.

V

  1. van Wijk, Klaas J.

    1. You have accessRestricted Access
      A Ribonuclease III Domain Protein Functions in Group II Intron Splicing in Maize Chloroplasts
      Kenneth P. Watkins, Tiffany S. Kroeger, Amy M. Cooke, Rosalind E. Williams-Carrier, Giulia Friso, Susan E. Belcher, Klaas J. van Wijk, Alice Barkan
      Plant Cell Aug 2007, 19 (8) 2606-2623; DOI: https://doi.org/10.1105/tpc.107.053736

      Chloroplasts harbor numerous group II introns, ribozymes whose activity is facilitated by proteins in vivo. This study shows that RNC1, a protein with catalytically inactive RNAse III domains, promotes the splicing of many group II introns in chloroplasts and is bound to those introns in vivo. RNC1 functions both together with and independently of previously described chloroplast splicing factors.

  2. Venables, Barney J.

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  3. Vierstra, Richard D.

    1. You have accessRestricted Access
      Large-Scale, Lineage-Specific Expansion of a Bric-a-Brac/Tramtrack/Broad Complex Ubiquitin-Ligase Gene Family in Rice
      Derek J. Gingerich, Kousuke Hanada, Shin-Han Shiu, Richard D. Vierstra
      Plant Cell Aug 2007, 19 (8) 2329-2348; DOI: https://doi.org/10.1105/tpc.107.051300

      BTB genes encode E3 ubiquitin-ligase target recognition subunits. This study characterizes the 149-member BTB superfamily in rice and compares it to the 80-member BTB superfamily in Arabidopsis. The rice MATH-BTB family has undergone dramatic expansion accompanied by increased sequence diversification and reduced purifying selection. A possible role in innate immunity is presented.

  4. von Wirén, Nicolaus

    1. You have accessRestricted Access
      The Organization of High-Affinity Ammonium Uptake in Arabidopsis Roots Depends on the Spatial Arrangement and Biochemical Properties of AMT1-Type Transporters
      Lixing Yuan, Dominique Loqué, Soichi Kojima, Sabine Rauch, Keiki Ishiyama, Eri Inoue, Hideki Takahashi, Nicolaus von Wirén
      Plant Cell Aug 2007, 19 (8) 2636-2652; DOI: https://doi.org/10.1105/tpc.107.052134

      Ammonium uptake across the plasma membrane of plant roots is mediated by AMT-type transporters. By generating triple and quadruple amt mutants in Arabidopsis, this study shows that four individual AMTs that differ in cell type–specific expression and substrate affinity contribute to high-affinity ammonium influx with different nitrogen-dependent transport capacities.

W

  1. Wada, Takuji

    1. You have accessRestricted Access
      Arabidopsis TRANSPARENT TESTA GLABRA2 Is Directly Regulated by R2R3 MYB Transcription Factors and Is Involved in Regulation of GLABRA2 Transcription in Epidermal Differentiation
      Tetsuya Ishida, Sayoko Hattori, Ryosuke Sano, Kayoko Inoue, Yumiko Shirano, Hiroaki Hayashi, Daisuke Shibata, Shusei Sato, Tomohiko Kato, Satoshi Tabata, Kiyotaka Okada, Takuji Wada
      Plant Cell Aug 2007, 19 (8) 2531-2543; DOI: https://doi.org/10.1105/tpc.107.052274

      This work demonstrates that the WRKY transcription factor TTG2 functions in a regulatory cascade in the formation of trichomes and root hair. Complexes containing R2R3 MYB and bHLH transcription factors regulate the expression of TTG2, and TTG2 acts redundantly with these complexes to regulate GL2, which encodes a homeodomain protein that promotes formation of trichomes and root hairless cells.

  2. Waldron, Keith

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

  3. Wang, Yuh-Shuh

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  4. Watkins, Kenneth P.

    1. You have accessRestricted Access
      A Ribonuclease III Domain Protein Functions in Group II Intron Splicing in Maize Chloroplasts
      Kenneth P. Watkins, Tiffany S. Kroeger, Amy M. Cooke, Rosalind E. Williams-Carrier, Giulia Friso, Susan E. Belcher, Klaas J. van Wijk, Alice Barkan
      Plant Cell Aug 2007, 19 (8) 2606-2623; DOI: https://doi.org/10.1105/tpc.107.053736

      Chloroplasts harbor numerous group II introns, ribozymes whose activity is facilitated by proteins in vivo. This study shows that RNC1, a protein with catalytically inactive RNAse III domains, promotes the splicing of many group II introns in chloroplasts and is bound to those introns in vivo. RNC1 functions both together with and independently of previously described chloroplast splicing factors.

  5. Wiant, William C.

    1. Open Access
      N-Acylethanolamine Metabolism Interacts with Abscisic Acid Signaling in Arabidopsis thaliana Seedlings
      Neal D. Teaster, Christy M. Motes, Yuhong Tang, William C. Wiant, Matthew Q. Cotter, Yuh-Shuh Wang, Aruna Kilaru, Barney J. Venables, Karl H. Hasenstein, Gabriel Gonzalez, Elison B. Blancaflor, Kent D. Chapman
      Plant Cell Aug 2007, 19 (8) 2454-2469; DOI: https://doi.org/10.1105/tpc.106.048702

      N-acylethanolamines (NAEs) are important lipid mediators in the endocannabinoid signaling pathway, which influences a variety of physiological processes in vertebrates. This work indicates that NAEs, which are also endogenous metabolites in plants, act in concert with abscisic acid in the negative regulation of seed germination and early seedling establishment.

  6. Williams-Carrier, Rosalind E.

    1. You have accessRestricted Access
      A Ribonuclease III Domain Protein Functions in Group II Intron Splicing in Maize Chloroplasts
      Kenneth P. Watkins, Tiffany S. Kroeger, Amy M. Cooke, Rosalind E. Williams-Carrier, Giulia Friso, Susan E. Belcher, Klaas J. van Wijk, Alice Barkan
      Plant Cell Aug 2007, 19 (8) 2606-2623; DOI: https://doi.org/10.1105/tpc.107.053736

      Chloroplasts harbor numerous group II introns, ribozymes whose activity is facilitated by proteins in vivo. This study shows that RNC1, a protein with catalytically inactive RNAse III domains, promotes the splicing of many group II introns in chloroplasts and is bound to those introns in vivo. RNC1 functions both together with and independently of previously described chloroplast splicing factors.

  7. Win, Joe

    1. You have accessRestricted Access
      Adaptive Evolution Has Targeted the C-Terminal Domain of the RXLR Effectors of Plant Pathogenic Oomycetes
      Joe Win, William Morgan, Jorunn Bos, Ksenia V. Krasileva, Liliana M. Cano, Angela Chaparro-Garcia, Randa Ammar, Brian J. Staskawicz, Sophien Kamoun
      Plant Cell Aug 2007, 19 (8) 2349-2369; DOI: https://doi.org/10.1105/tpc.107.051037

      The RXLR effectors of plant pathogenic oomycetes are shown to be under adaptive selection. Positive selection has acted for the most part on the C-terminal region consistent with the view that RXLR effectors are modular proteins, with the C-terminal domain dedicated to modulating host defenses inside plant cells.

Y

  1. Yan, Yuanxin

    1. Open Access
      A Downstream Mediator in the Growth Repression Limb of the Jasmonate Pathway
      Yuanxin Yan, Stéphanie Stolz, Aurore Chételat, Philippe Reymond, Marco Pagni, Lucie Dubugnon, Edward E. Farmer
      Plant Cell Aug 2007, 19 (8) 2470-2483; DOI: https://doi.org/10.1105/tpc.107.050708

      Gain- and loss-of-function analyses coupled with physiological assays demonstrate that JASMONATE ASSOCIATED1 acts as a repressor of jasmonic acid–regulated growth retardation.

  2. Yu, Su-May

    1. You have accessRestricted Access
      The SnRK1A Protein Kinase Plays a Key Role in Sugar Signaling during Germination and Seedling Growth of Rice
      Chung-An Lu, Chih-Cheng Lin, Kuo-Wei Lee, Jyh-Long Chen, Li-Fen Huang, Shin-Lon Ho, Hsin-Ju Liu, Yue-Ie Hsing, Su-May Yu
      Plant Cell Aug 2007, 19 (8) 2484-2499; DOI: https://doi.org/10.1105/tpc.105.037887

      This work demonstrates a functional link between the SnRK1A protein kinase and the MYBS1 transcription factor as essential components in the sugar signaling pathway regulating the α-amylase gene promoter. The results provide new insight into mechanisms of sugar regulation and the physiological relevance of SnRK1A in germination and seedling growth.

  3. Yuan, Lixing

    1. You have accessRestricted Access
      The Organization of High-Affinity Ammonium Uptake in Arabidopsis Roots Depends on the Spatial Arrangement and Biochemical Properties of AMT1-Type Transporters
      Lixing Yuan, Dominique Loqué, Soichi Kojima, Sabine Rauch, Keiki Ishiyama, Eri Inoue, Hideki Takahashi, Nicolaus von Wirén
      Plant Cell Aug 2007, 19 (8) 2636-2652; DOI: https://doi.org/10.1105/tpc.107.052134

      Ammonium uptake across the plasma membrane of plant roots is mediated by AMT-type transporters. By generating triple and quadruple amt mutants in Arabidopsis, this study shows that four individual AMTs that differ in cell type–specific expression and substrate affinity contribute to high-affinity ammonium influx with different nitrogen-dependent transport capacities.

Z

  1. Zhao, Yunde

    1. You have accessRestricted Access
      Auxin Synthesized by the YUCCA Flavin Monooxygenases Is Essential for Embryogenesis and Leaf Formation in Arabidopsis
      Youfa Cheng, Xinhua Dai, Yunde Zhao
      Plant Cell Aug 2007, 19 (8) 2430-2439; DOI: https://doi.org/10.1105/tpc.107.053009

      Genetic analysis of various combinations of yuc mutants and polar auxin transport mutants pin1 and aux1 establish that auxin synthesized by the YUC flavin monooxygenases is essential for the establishment of the basal body region during embryogenesis and the formation of embryonic and postembryonic organs.

  2. Zheng, Leiying

    1. You have accessRestricted Access
      Signaling from an Altered Cell Wall to the Nucleus Mediates Sugar-Responsive Growth and Development in Arabidopsis thaliana
      Yunhai Li, Caroline Smith, Fiona Corke, Leiying Zheng, Zara Merali, Peter Ryden, Paul Derbyshire, Keith Waldron, Michael W. Bevan
      Plant Cell Aug 2007, 19 (8) 2500-2515; DOI: https://doi.org/10.1105/tpc.106.049965

      Arabidopsis HIGH SUGAR RESPONSE8 (HSR8) is found to be allelic to the MUR4 gene involved in arabinose synthesis. Genetic analyses show that nuclear-localized Pleiotropic Regulatory Locus1 (PRL1) is required for enhanced sugar responses in hsr8 mutant plants and reveal a pathway through PRL1 that signals changes in the cell wall to alter gene expression and sugar-responsive metabolic and developmental changes.

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In this issue

The Plant Cell Online: 19 (8)
The Plant Cell
Vol. 19, Issue 8
August 2007
  • Table of Contents
  • Table of Contents (PDF)
  • About the Cover
  • Index by author
  • Back Matter (PDF)
  • Front Matter (PDF)
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