Table of Contents
A
Ambrose, Mike
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
Aparicio, Frederic
- You have accessRestricted AccessThe Cytosolic Protein Response as a Subcomponent of the Wider Heat Shock Response in ArabidopsisAkiko Sugio, René Dreos, Frederic Aparicio, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 642-654; DOI: https://doi.org/10.1105/tpc.108.062596
Accumulation of misfolded protein in the cytosol of Arabidopsis, for example following heat shock, activates a stress response that includes a range of specific transcriptional events. This response was found to be partly regulated by the transcription factor HsfA2.
B
Battey, Nicholas H.
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Bayer, Emmanuelle
- You have accessRestricted AccessAn Arabidopsis GPI-Anchor Plasmodesmal Neck Protein with Callose Binding Activity and Potential to Regulate Cell-to-Cell TraffickingClare Simpson, Carole Thomas, Kim Findlay, Emmanuelle Bayer, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 581-594; DOI: https://doi.org/10.1105/tpc.108.060145
This work contributes to our understanding of plasmodesmal (Pd) structure and function through the identification of a novel Pd protein. This protein shows binding to callose, a component important in Pd regulation, and accordingly the protein appears to influence molecular flux through these cell-to-cell communication channels.
Bendahmane, Abdelhafid
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
Bertoni, Gregory
- You have accessRestricted AccessFunctional ER Chaperone Required in Rice Blast DiseaseGregory BertoniPlant Cell Feb 2009, 21 (2) 366; DOI: https://doi.org/10.1105/tpc.109.210213
Bhave, Mrinal
- You have accessRestricted AccessNuclear Activity of ROXY1, a Glutaredoxin Interacting with TGA Factors, Is Required for Petal Development in Arabidopsis thalianaShutian Li, Andrea Lauri, Mark Ziemann, Andrea Busch, Mrinal Bhave, Sabine ZachgoPlant Cell Feb 2009, 21 (2) 429-441; DOI: https://doi.org/10.1105/tpc.108.064477
Glutaredoxins are ubiquitous glutathione-dependent oxidoreductases that are associated mainly with redox-regulated processes participating in stress responses. This work shows that ROXY1, a CC-type glutaredoxin, acts in the nucleus to influence petal primordia initiation and later petal morphogenesis, likely by modifying TGA transcription factors posttranslationally.
Bonhomme, Sandrine
- You have accessRestricted AccessThe Arabidopsis Proteasome RPT5 Subunits Are Essential for Gametophyte Development and Show Accession-Dependent RedundancyJean-Luc Gallois, Anouchka Guyon-Debast, Alain Lécureuil, Daniel Vezon, Virginie Carpentier, Sandrine Bonhomme, Philippe GuerchePlant Cell Feb 2009, 21 (2) 442-459; DOI: https://doi.org/10.1105/tpc.108.062372
This work shows that the proteasome Regulatory Particle 5 (RPT5) subunits are essential for male and female gametophyte development. Analysis of mutants for both genes encoding these subunits in two different Arabidopsis accessions also highlights that redundancy between the two RPT5 genes is accession dependent and in particular that the rpt5a mutant phenotype depends on its background.
Book, Adam J.
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
Brennicke, Axel
- You have accessRestricted AccessA DYW Domain–Containing Pentatricopeptide Repeat Protein Is Required for RNA Editing at Multiple Sites in Mitochondria of Arabidopsis thalianaAnja Zehrmann, Daniil Verbitskiy, Johannes A. van der Merwe, Axel Brennicke, Mizuki TakenakaPlant Cell Feb 2009, 21 (2) 558-567; DOI: https://doi.org/10.1105/tpc.108.064535
RNA editing in plant mitochondria changes 400 to 500 Cs to Us, mostly in mRNAs. This article identifies a trans-factor involved in RNA editing in plant mitochondria and reports that single-nucleotide mutations in this pentatricopeptide repeat protein differentially influence editing at the three sites addressed in different mRNAs.
Brownlee, Colin
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Busch, Andrea
- You have accessRestricted AccessNuclear Activity of ROXY1, a Glutaredoxin Interacting with TGA Factors, Is Required for Petal Development in Arabidopsis thalianaShutian Li, Andrea Lauri, Mark Ziemann, Andrea Busch, Mrinal Bhave, Sabine ZachgoPlant Cell Feb 2009, 21 (2) 429-441; DOI: https://doi.org/10.1105/tpc.108.064477
Glutaredoxins are ubiquitous glutathione-dependent oxidoreductases that are associated mainly with redox-regulated processes participating in stress responses. This work shows that ROXY1, a CC-type glutaredoxin, acts in the nucleus to influence petal primordia initiation and later petal morphogenesis, likely by modifying TGA transcription factors posttranslationally.
Butcher, Susan
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
Buzzinotti, Zachri W.
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
C
Carpentier, Virginie
- You have accessRestricted AccessThe Arabidopsis Proteasome RPT5 Subunits Are Essential for Gametophyte Development and Show Accession-Dependent RedundancyJean-Luc Gallois, Anouchka Guyon-Debast, Alain Lécureuil, Daniel Vezon, Virginie Carpentier, Sandrine Bonhomme, Philippe GuerchePlant Cell Feb 2009, 21 (2) 442-459; DOI: https://doi.org/10.1105/tpc.108.062372
This work shows that the proteasome Regulatory Particle 5 (RPT5) subunits are essential for male and female gametophyte development. Analysis of mutants for both genes encoding these subunits in two different Arabidopsis accessions also highlights that redundancy between the two RPT5 genes is accession dependent and in particular that the rpt5a mutant phenotype depends on its background.
Casper, Sarah
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
Chen, Jianghua
- Open AccessThe E3 Ubiquitin Ligase SCFTIR1/AFB and Membrane Sterols Play Key Roles in Auxin Regulation of Endocytosis, Recycling, and Plasma Membrane Accumulation of the Auxin Efflux Transporter PIN2 in Arabidopsis thalianaJianwei Pan, Shozo Fujioka, Jianling Peng, Jianghua Chen, Guangming Li, Rujin ChenPlant Cell Feb 2009, 21 (2) 568-580; DOI: https://doi.org/10.1105/tpc.108.061465
The PIN auxin efflux transporters, which are themselves regulated by auxin, determine the direction and rate of intercellular auxin flow. This work shows that the auxin regulation of endocytosis, recycling, and plasma membrane accumulation of specific plasma membrane–resident proteins, including some PIN proteins, is dependent on a ubiquitin ligase and on membrane sterols.
Chen, Rujin
- Open AccessThe E3 Ubiquitin Ligase SCFTIR1/AFB and Membrane Sterols Play Key Roles in Auxin Regulation of Endocytosis, Recycling, and Plasma Membrane Accumulation of the Auxin Efflux Transporter PIN2 in Arabidopsis thalianaJianwei Pan, Shozo Fujioka, Jianling Peng, Jianghua Chen, Guangming Li, Rujin ChenPlant Cell Feb 2009, 21 (2) 568-580; DOI: https://doi.org/10.1105/tpc.108.061465
The PIN auxin efflux transporters, which are themselves regulated by auxin, determine the direction and rate of intercellular auxin flow. This work shows that the auxin regulation of endocytosis, recycling, and plasma membrane accumulation of specific plasma membrane–resident proteins, including some PIN proteins, is dependent on a ubiquitin ligase and on membrane sterols.
Chèvre, Anne-Marie
- You have accessRestricted AccessGenetic Regulation of Meiotic Cross-Overs between Related Genomes in Brassica napus Haploids and HybridsStéphane D. Nicolas, Martine Leflon, Hervé Monod, Frédérique Eber, Olivier Coriton, Virginie Huteau, Anne-Marie Chèvre, Eric JenczewskiPlant Cell Feb 2009, 21 (2) 373-385; DOI: https://doi.org/10.1105/tpc.108.062273
Precise control of chromosome recombination is vital for conferring genome and meiotic stability and, thus, fitness of sexually reproductive polyploids. This work provides new insights on the genetic system that regulates the number of associations between nonhomologous chromosomes during meiosis of Brassica napus haploids.
Chi, Myoung-Hwan
- Open AccessThe ER Chaperone LHS1 Is Involved in Asexual Development and Rice Infection by the Blast Fungus Magnaporthe oryzaeMihwa Yi, Myoung-Hwan Chi, Chang Hyun Khang, Sook-Young Park, Seogchan Kang, Barbara Valent, Yong-Hwan LeePlant Cell Feb 2009, 21 (2) 681-695; DOI: https://doi.org/10.1105/tpc.107.055988
Magnaporthe oryzae LHS1 is an ER protein that functions in the unfolded protein response, as shown in yeast and plant systems. Disruption of the LHS1 gene causes improper processing and secretion of proteins. This disproportionately impacts early plant colonization steps in the compatible interaction and induction of plant defenses in the incompatible interaction.
Cho, Seok Keun
- You have accessRestricted AccessDrought Stress-Induced Rma1H1, a RING Membrane-Anchor E3 Ubiquitin Ligase Homolog, Regulates Aquaporin Levels via Ubiquitination in Transgenic Arabidopsis PlantsHyun Kyung Lee, Seok Keun Cho, Ora Son, Zhengyi Xu, Inhwan Hwang, Woo Taek KimPlant Cell Feb 2009, 21 (2) 622-641; DOI: https://doi.org/10.1105/tpc.108.061994
The role of ubiquitination in responses to abiotic stresses is not clearly understood. This work shows that overexpression of a hot pepper homolog of a human ubiquitin ligase results in markedly increased tolerance to severe drought stress in transgenic Arabidopsis plants by ubiquitinating the water channel protein aquaporin.
Choi, Giltsu
- You have accessRestricted AccessGenome-Wide Analysis of Genes Targeted by PHYTOCHROME INTERACTING FACTOR 3-LIKE5 during Seed Germination in ArabidopsisEunkyoo Oh, Hyojin Kang, Shinjiro Yamaguchi, Jeongmoo Park, Doheon Lee, Yuji Kamiya, Giltsu ChoiPlant Cell Feb 2009, 21 (2) 403-419; DOI: https://doi.org/10.1105/tpc.108.064691
PIL5 is a phytochrome-interacting bHLH transcription factor that regulates seed germination. This work identifies genes directly targeted by PIL5 through comparison of microarray and ChIP-chip data. The analysis of the target genes shows that PIL5 regulates seed germination by coordinating various hormone signaling pathways and by modifying cell wall properties in imbibed seeds.
Clarke, Jonathan
- You have accessRestricted AccessA Novel Plant Leucine-Rich Repeat Receptor Kinase Regulates the Response of Medicago truncatula Roots to Salt StressLaura de Lorenzo, Francisco Merchan, Philippe Laporte, Richard Thompson, Jonathan Clarke, Carolina Sousa, Martín CrespiPlant Cell Feb 2009, 21 (2) 668-680; DOI: https://doi.org/10.1105/tpc.108.059576
This work examines a leucine-rich repeat-like kinase (RLK) induced in response to salt stress in the model legume Medicago truncatula. Mutants in this gene showed an impaired physiological and molecular response to high salt and accumulate less salt in their tissues. This RLK plays a key role in the adaptation of M. truncatula to salt stress.
Cominelli, Eleonora
- You have accessRestricted AccessThe Future of Science: Food and Water for LifeNancy A. Eckardt, Eleonora Cominelli, Massimo Galbiati, Chiara TonelliPlant Cell Feb 2009, 21 (2) 368-372; DOI: https://doi.org/10.1105/tpc.109.066209
Coriton, Olivier
- You have accessRestricted AccessGenetic Regulation of Meiotic Cross-Overs between Related Genomes in Brassica napus Haploids and HybridsStéphane D. Nicolas, Martine Leflon, Hervé Monod, Frédérique Eber, Olivier Coriton, Virginie Huteau, Anne-Marie Chèvre, Eric JenczewskiPlant Cell Feb 2009, 21 (2) 373-385; DOI: https://doi.org/10.1105/tpc.108.062273
Precise control of chromosome recombination is vital for conferring genome and meiotic stability and, thus, fitness of sexually reproductive polyploids. This work provides new insights on the genetic system that regulates the number of associations between nonhomologous chromosomes during meiosis of Brassica napus haploids.
Coxon, Katy M.
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Crespi, Martín
- You have accessRestricted AccessA Novel Plant Leucine-Rich Repeat Receptor Kinase Regulates the Response of Medicago truncatula Roots to Salt StressLaura de Lorenzo, Francisco Merchan, Philippe Laporte, Richard Thompson, Jonathan Clarke, Carolina Sousa, Martín CrespiPlant Cell Feb 2009, 21 (2) 668-680; DOI: https://doi.org/10.1105/tpc.108.059576
This work examines a leucine-rich repeat-like kinase (RLK) induced in response to salt stress in the model legume Medicago truncatula. Mutants in this gene showed an impaired physiological and molecular response to high salt and accumulate less salt in their tissues. This RLK plays a key role in the adaptation of M. truncatula to salt stress.
D
Dalmais, Marion
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
Davies, Julia M.
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
de Azevedo Souza, Clarice
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
de Lorenzo, Laura
- You have accessRestricted AccessA Novel Plant Leucine-Rich Repeat Receptor Kinase Regulates the Response of Medicago truncatula Roots to Salt StressLaura de Lorenzo, Francisco Merchan, Philippe Laporte, Richard Thompson, Jonathan Clarke, Carolina Sousa, Martín CrespiPlant Cell Feb 2009, 21 (2) 668-680; DOI: https://doi.org/10.1105/tpc.108.059576
This work examines a leucine-rich repeat-like kinase (RLK) induced in response to salt stress in the model legume Medicago truncatula. Mutants in this gene showed an impaired physiological and molecular response to high salt and accumulate less salt in their tissues. This RLK plays a key role in the adaptation of M. truncatula to salt stress.
Demidchik, Vadim
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Deng, Xing Wang
- You have accessRestricted AccessPhytochrome A Mediates Rapid Red Light–Induced Phosphorylation of Arabidopsis FAR-RED ELONGATED HYPOCOTYL1 in a Low Fluence ResponseYunping Shen, Zhenzhen Zhou, Suhua Feng, Jigang Li, Anna Tan-Wilson, Li-Jia Qu, Haiyang Wang, Xing Wang DengPlant Cell Feb 2009, 21 (2) 494-506; DOI: https://doi.org/10.1105/tpc.108.061259
This work analyzes the protein–protein interactions between phytochrome A (phyA) and two far-red light signaling proteins (FHY1 and FHL). In addition, it finds that phyA exhibits kinase activity toward FHY1 in vitro and that FHY1 undergoes phyA-dependent phosphorylation during dark to red light transition, revealing a role of phyA in regulating this low fluence response.
Douglas, Carl J.
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
Downie, J. Allan
- You have accessRestricted AccessGRAS Proteins Form a DNA Binding Complex to Induce Gene Expression during Nodulation Signaling in Medicago truncatulaSibylle Hirsch, Jiyoung Kim, Alfonso Muñoz, Anne B. Heckmann, J. Allan Downie, Giles E.D. OldroydPlant Cell Feb 2009, 21 (2) 545-557; DOI: https://doi.org/10.1105/tpc.108.064501
Two GRAS domain Nodulation Signaling Pathway proteins, NSP1 and NSP2, from Medicago truncatula form a complex on the promoters of Nod factor–inducible genes. This complex is enhanced upon Nod factor elicitation, and the interaction between NSP1 and NSP2 is necessary for efficient nodulation.
Dreos, René
- You have accessRestricted AccessThe Cytosolic Protein Response as a Subcomponent of the Wider Heat Shock Response in ArabidopsisAkiko Sugio, René Dreos, Frederic Aparicio, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 642-654; DOI: https://doi.org/10.1105/tpc.108.062596
Accumulation of misfolded protein in the cytosol of Arabidopsis, for example following heat shock, activates a stress response that includes a range of specific transcriptional events. This response was found to be partly regulated by the transcription factor HsfA2.
Dupin, Adeline
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
E
Eber, Frédérique
- You have accessRestricted AccessGenetic Regulation of Meiotic Cross-Overs between Related Genomes in Brassica napus Haploids and HybridsStéphane D. Nicolas, Martine Leflon, Hervé Monod, Frédérique Eber, Olivier Coriton, Virginie Huteau, Anne-Marie Chèvre, Eric JenczewskiPlant Cell Feb 2009, 21 (2) 373-385; DOI: https://doi.org/10.1105/tpc.108.062273
Precise control of chromosome recombination is vital for conferring genome and meiotic stability and, thus, fitness of sexually reproductive polyploids. This work provides new insights on the genetic system that regulates the number of associations between nonhomologous chromosomes during meiosis of Brassica napus haploids.
Eckardt, Nancy A.
- You have accessRestricted AccessA Receptor-Like Kinase That Functions in Adaptation to Salt Stress in LegumesNancy A. EckardtPlant Cell Feb 2009, 21 (2) 364; DOI: https://doi.org/10.1105/tpc.109.210211
- You have accessRestricted AccessFunctions of DNA Polymerase εNancy A. EckardtPlant Cell Feb 2009, 21 (2) 365; DOI: https://doi.org/10.1105/tpc.109.210212
- You have accessRestricted AccessNodulation Signaling in Legumes Depends on an NSP1-NSP2 ComplexNancy A. EckardtPlant Cell Feb 2009, 21 (2) 367; DOI: https://doi.org/10.1105/tpc.109.210214
- You have accessRestricted AccessThe Future of Science: Food and Water for LifeNancy A. Eckardt, Eleonora Cominelli, Massimo Galbiati, Chiara TonelliPlant Cell Feb 2009, 21 (2) 368-372; DOI: https://doi.org/10.1105/tpc.109.066209
Ellis, Noel
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
F
Feng, Suhua
- You have accessRestricted AccessPhytochrome A Mediates Rapid Red Light–Induced Phosphorylation of Arabidopsis FAR-RED ELONGATED HYPOCOTYL1 in a Low Fluence ResponseYunping Shen, Zhenzhen Zhou, Suhua Feng, Jigang Li, Anna Tan-Wilson, Li-Jia Qu, Haiyang Wang, Xing Wang DengPlant Cell Feb 2009, 21 (2) 494-506; DOI: https://doi.org/10.1105/tpc.108.061259
This work analyzes the protein–protein interactions between phytochrome A (phyA) and two far-red light signaling proteins (FHY1 and FHL). In addition, it finds that phyA exhibits kinase activity toward FHY1 in vitro and that FHY1 undergoes phyA-dependent phosphorylation during dark to red light transition, revealing a role of phyA in regulating this low fluence response.
Findlay, Kim
- You have accessRestricted AccessAn Arabidopsis GPI-Anchor Plasmodesmal Neck Protein with Callose Binding Activity and Potential to Regulate Cell-to-Cell TraffickingClare Simpson, Carole Thomas, Kim Findlay, Emmanuelle Bayer, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 581-594; DOI: https://doi.org/10.1105/tpc.108.060145
This work contributes to our understanding of plasmodesmal (Pd) structure and function through the identification of a novel Pd protein. This protein shows binding to callose, a component important in Pd regulation, and accordingly the protein appears to influence molecular flux through these cell-to-cell communication channels.
Fujioka, Shozo
- Open AccessThe E3 Ubiquitin Ligase SCFTIR1/AFB and Membrane Sterols Play Key Roles in Auxin Regulation of Endocytosis, Recycling, and Plasma Membrane Accumulation of the Auxin Efflux Transporter PIN2 in Arabidopsis thalianaJianwei Pan, Shozo Fujioka, Jianling Peng, Jianghua Chen, Guangming Li, Rujin ChenPlant Cell Feb 2009, 21 (2) 568-580; DOI: https://doi.org/10.1105/tpc.108.061465
The PIN auxin efflux transporters, which are themselves regulated by auxin, determine the direction and rate of intercellular auxin flow. This work shows that the auxin regulation of endocytosis, recycling, and plasma membrane accumulation of specific plasma membrane–resident proteins, including some PIN proteins, is dependent on a ubiquitin ligase and on membrane sterols.
G
Galbiati, Massimo
- You have accessRestricted AccessThe Future of Science: Food and Water for LifeNancy A. Eckardt, Eleonora Cominelli, Massimo Galbiati, Chiara TonelliPlant Cell Feb 2009, 21 (2) 368-372; DOI: https://doi.org/10.1105/tpc.109.066209
Gallois, Jean-Luc
- You have accessRestricted AccessThe Arabidopsis Proteasome RPT5 Subunits Are Essential for Gametophyte Development and Show Accession-Dependent RedundancyJean-Luc Gallois, Anouchka Guyon-Debast, Alain Lécureuil, Daniel Vezon, Virginie Carpentier, Sandrine Bonhomme, Philippe GuerchePlant Cell Feb 2009, 21 (2) 442-459; DOI: https://doi.org/10.1105/tpc.108.062372
This work shows that the proteasome Regulatory Particle 5 (RPT5) subunits are essential for male and female gametophyte development. Analysis of mutants for both genes encoding these subunits in two different Arabidopsis accessions also highlights that redundancy between the two RPT5 genes is accession dependent and in particular that the rpt5a mutant phenotype depends on its background.
Gong, Zhizhong
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
Guerche, Philippe
- You have accessRestricted AccessThe Arabidopsis Proteasome RPT5 Subunits Are Essential for Gametophyte Development and Show Accession-Dependent RedundancyJean-Luc Gallois, Anouchka Guyon-Debast, Alain Lécureuil, Daniel Vezon, Virginie Carpentier, Sandrine Bonhomme, Philippe GuerchePlant Cell Feb 2009, 21 (2) 442-459; DOI: https://doi.org/10.1105/tpc.108.062372
This work shows that the proteasome Regulatory Particle 5 (RPT5) subunits are essential for male and female gametophyte development. Analysis of mutants for both genes encoding these subunits in two different Arabidopsis accessions also highlights that redundancy between the two RPT5 genes is accession dependent and in particular that the rpt5a mutant phenotype depends on its background.
Guyon-Debast, Anouchka
- You have accessRestricted AccessThe Arabidopsis Proteasome RPT5 Subunits Are Essential for Gametophyte Development and Show Accession-Dependent RedundancyJean-Luc Gallois, Anouchka Guyon-Debast, Alain Lécureuil, Daniel Vezon, Virginie Carpentier, Sandrine Bonhomme, Philippe GuerchePlant Cell Feb 2009, 21 (2) 442-459; DOI: https://doi.org/10.1105/tpc.108.062372
This work shows that the proteasome Regulatory Particle 5 (RPT5) subunits are essential for male and female gametophyte development. Analysis of mutants for both genes encoding these subunits in two different Arabidopsis accessions also highlights that redundancy between the two RPT5 genes is accession dependent and in particular that the rpt5a mutant phenotype depends on its background.
H
Haughn, George W.
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
He, Junna
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
Heckmann, Anne B.
- You have accessRestricted AccessGRAS Proteins Form a DNA Binding Complex to Induce Gene Expression during Nodulation Signaling in Medicago truncatulaSibylle Hirsch, Jiyoung Kim, Alfonso Muñoz, Anne B. Heckmann, J. Allan Downie, Giles E.D. OldroydPlant Cell Feb 2009, 21 (2) 545-557; DOI: https://doi.org/10.1105/tpc.108.064501
Two GRAS domain Nodulation Signaling Pathway proteins, NSP1 and NSP2, from Medicago truncatula form a complex on the promoters of Nod factor–inducible genes. This complex is enhanced upon Nod factor elicitation, and the interaction between NSP1 and NSP2 is necessary for efficient nodulation.
Hirsch, Sibylle
- You have accessRestricted AccessGRAS Proteins Form a DNA Binding Complex to Induce Gene Expression during Nodulation Signaling in Medicago truncatulaSibylle Hirsch, Jiyoung Kim, Alfonso Muñoz, Anne B. Heckmann, J. Allan Downie, Giles E.D. OldroydPlant Cell Feb 2009, 21 (2) 545-557; DOI: https://doi.org/10.1105/tpc.108.064501
Two GRAS domain Nodulation Signaling Pathway proteins, NSP1 and NSP2, from Medicago truncatula form a complex on the promoters of Nod factor–inducible genes. This complex is enhanced upon Nod factor elicitation, and the interaction between NSP1 and NSP2 is necessary for efficient nodulation.
Hofer, Julie
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
Hofmann, Andreas
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Hofmann, Nancy R.
- You have accessRestricted AccessGlutaredoxin Functions in Floral DevelopmentNancy R. HofmannPlant Cell Feb 2009, 21 (2) 363; DOI: https://doi.org/10.1105/tpc.109.210210
Holmes, James H.
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
Hong, Xuhui
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
Huang, Chao Feng
- You have accessRestricted AccessA Bacterial-Type ABC Transporter Is Involved in Aluminum Tolerance in RiceChao Feng Huang, Naoki Yamaji, Namiki Mitani, Masahiro Yano, Yoshiaki Nagamura, Jian Feng MaPlant Cell Feb 2009, 21 (2) 655-667; DOI: https://doi.org/10.1105/tpc.108.064543
Aluminum toxicity is a major factor limiting crop production in acidic soil. This work identifies two genes (STAR1 and STAR2) involved in aluminum tolerance in rice. STAR1 encodes a nucleotide binding domain of a putative ABC transporter. It interacts with STAR2, which encodes a transmembrane domain protein, to form an ABC transporter complex that transports UDP-glucose.
Huteau, Virginie
- You have accessRestricted AccessGenetic Regulation of Meiotic Cross-Overs between Related Genomes in Brassica napus Haploids and HybridsStéphane D. Nicolas, Martine Leflon, Hervé Monod, Frédérique Eber, Olivier Coriton, Virginie Huteau, Anne-Marie Chèvre, Eric JenczewskiPlant Cell Feb 2009, 21 (2) 373-385; DOI: https://doi.org/10.1105/tpc.108.062273
Precise control of chromosome recombination is vital for conferring genome and meiotic stability and, thus, fitness of sexually reproductive polyploids. This work provides new insights on the genetic system that regulates the number of associations between nonhomologous chromosomes during meiosis of Brassica napus haploids.
Hwang, Inhwan
- You have accessRestricted AccessDrought Stress-Induced Rma1H1, a RING Membrane-Anchor E3 Ubiquitin Ligase Homolog, Regulates Aquaporin Levels via Ubiquitination in Transgenic Arabidopsis PlantsHyun Kyung Lee, Seok Keun Cho, Ora Son, Zhengyi Xu, Inhwan Hwang, Woo Taek KimPlant Cell Feb 2009, 21 (2) 622-641; DOI: https://doi.org/10.1105/tpc.108.061994
The role of ubiquitination in responses to abiotic stresses is not clearly understood. This work shows that overexpression of a hot pepper homolog of a human ubiquitin ligase results in markedly increased tolerance to severe drought stress in transgenic Arabidopsis plants by ubiquitinating the water channel protein aquaporin.
I
Isaac, Peter
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
J
Jamai, Aziz
- You have accessRestricted AccessArabidopsis Photorespiratory Serine Hydroxymethyltransferase Activity Requires the Mitochondrial Accumulation of Ferredoxin-Dependent Glutamate SynthaseAziz Jamai, Patrice A. Salomé, Stephen H. Schilling, Andreas P.M. Weber, C. Robertson McClungPlant Cell Feb 2009, 21 (2) 595-606; DOI: https://doi.org/10.1105/tpc.108.063289
Photorespiration is the light-stimulated consumption of oxygen and evolution of carbon dioxide that occurs at ambient levels of carbon dioxide. Ferredoxin-dependent Glutamate Synthase, a key enzyme in the photorespiratory cycle previously known to localize in chloroplasts, is shown to occur also in mitochondria, where it interacts with serine hydroxymethyltransferase.
Jenczewski, Eric
- You have accessRestricted AccessGenetic Regulation of Meiotic Cross-Overs between Related Genomes in Brassica napus Haploids and HybridsStéphane D. Nicolas, Martine Leflon, Hervé Monod, Frédérique Eber, Olivier Coriton, Virginie Huteau, Anne-Marie Chèvre, Eric JenczewskiPlant Cell Feb 2009, 21 (2) 373-385; DOI: https://doi.org/10.1105/tpc.108.062273
Precise control of chromosome recombination is vital for conferring genome and meiotic stability and, thus, fitness of sexually reproductive polyploids. This work provides new insights on the genetic system that regulates the number of associations between nonhomologous chromosomes during meiosis of Brassica napus haploids.
Jenik, Pablo D.
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
Jung, Ji-Yul
- You have accessRestricted AccessEthylene Mediates Response and Tolerance to Potassium Deprivation in ArabidopsisJi-Yul Jung, Ryoung Shin, Daniel P. SchachtmanPlant Cell Feb 2009, 21 (2) 607-621; DOI: https://doi.org/10.1105/tpc.108.063099
Plant response to low nutrients is vital for growth and survival. This study shows that the ethylene signaling pathway is induced by potassium deprivation and positively regulates reactive oxygen species production and K+ transporter expression (HAK5) in Arabidopsis roots. Ethylene also enhances plant tolerance to low potassium and modulates root hair elongation and primary root growth.
K
Kamiya, Yuji
- You have accessRestricted AccessGenome-Wide Analysis of Genes Targeted by PHYTOCHROME INTERACTING FACTOR 3-LIKE5 during Seed Germination in ArabidopsisEunkyoo Oh, Hyojin Kang, Shinjiro Yamaguchi, Jeongmoo Park, Doheon Lee, Yuji Kamiya, Giltsu ChoiPlant Cell Feb 2009, 21 (2) 403-419; DOI: https://doi.org/10.1105/tpc.108.064691
PIL5 is a phytochrome-interacting bHLH transcription factor that regulates seed germination. This work identifies genes directly targeted by PIL5 through comparison of microarray and ChIP-chip data. The analysis of the target genes shows that PIL5 regulates seed germination by coordinating various hormone signaling pathways and by modifying cell wall properties in imbibed seeds.
Kang, Hyojin
- You have accessRestricted AccessGenome-Wide Analysis of Genes Targeted by PHYTOCHROME INTERACTING FACTOR 3-LIKE5 during Seed Germination in ArabidopsisEunkyoo Oh, Hyojin Kang, Shinjiro Yamaguchi, Jeongmoo Park, Doheon Lee, Yuji Kamiya, Giltsu ChoiPlant Cell Feb 2009, 21 (2) 403-419; DOI: https://doi.org/10.1105/tpc.108.064691
PIL5 is a phytochrome-interacting bHLH transcription factor that regulates seed germination. This work identifies genes directly targeted by PIL5 through comparison of microarray and ChIP-chip data. The analysis of the target genes shows that PIL5 regulates seed germination by coordinating various hormone signaling pathways and by modifying cell wall properties in imbibed seeds.
Kang, Seogchan
- Open AccessThe ER Chaperone LHS1 Is Involved in Asexual Development and Rice Infection by the Blast Fungus Magnaporthe oryzaeMihwa Yi, Myoung-Hwan Chi, Chang Hyun Khang, Sook-Young Park, Seogchan Kang, Barbara Valent, Yong-Hwan LeePlant Cell Feb 2009, 21 (2) 681-695; DOI: https://doi.org/10.1105/tpc.107.055988
Magnaporthe oryzae LHS1 is an ER protein that functions in the unfolded protein response, as shown in yeast and plant systems. Disruption of the LHS1 gene causes improper processing and secretion of proteins. This disproportionately impacts early plant colonization steps in the compatible interaction and induction of plant defenses in the incompatible interaction.
Khang, Chang Hyun
- Open AccessThe ER Chaperone LHS1 Is Involved in Asexual Development and Rice Infection by the Blast Fungus Magnaporthe oryzaeMihwa Yi, Myoung-Hwan Chi, Chang Hyun Khang, Sook-Young Park, Seogchan Kang, Barbara Valent, Yong-Hwan LeePlant Cell Feb 2009, 21 (2) 681-695; DOI: https://doi.org/10.1105/tpc.107.055988
Magnaporthe oryzae LHS1 is an ER protein that functions in the unfolded protein response, as shown in yeast and plant systems. Disruption of the LHS1 gene causes improper processing and secretion of proteins. This disproportionately impacts early plant colonization steps in the compatible interaction and induction of plant defenses in the incompatible interaction.
Kienow, Lucie
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
Kim, Jiyoung
- You have accessRestricted AccessGRAS Proteins Form a DNA Binding Complex to Induce Gene Expression during Nodulation Signaling in Medicago truncatulaSibylle Hirsch, Jiyoung Kim, Alfonso Muñoz, Anne B. Heckmann, J. Allan Downie, Giles E.D. OldroydPlant Cell Feb 2009, 21 (2) 545-557; DOI: https://doi.org/10.1105/tpc.108.064501
Two GRAS domain Nodulation Signaling Pathway proteins, NSP1 and NSP2, from Medicago truncatula form a complex on the promoters of Nod factor–inducible genes. This complex is enhanced upon Nod factor elicitation, and the interaction between NSP1 and NSP2 is necessary for efficient nodulation.
Kim, Sung Soo
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
Kim, Woo Taek
- You have accessRestricted AccessDrought Stress-Induced Rma1H1, a RING Membrane-Anchor E3 Ubiquitin Ligase Homolog, Regulates Aquaporin Levels via Ubiquitination in Transgenic Arabidopsis PlantsHyun Kyung Lee, Seok Keun Cho, Ora Son, Zhengyi Xu, Inhwan Hwang, Woo Taek KimPlant Cell Feb 2009, 21 (2) 622-641; DOI: https://doi.org/10.1105/tpc.108.061994
The role of ubiquitination in responses to abiotic stresses is not clearly understood. This work shows that overexpression of a hot pepper homolog of a human ubiquitin ligase results in markedly increased tolerance to severe drought stress in transgenic Arabidopsis plants by ubiquitinating the water channel protein aquaporin.
Koch, Stefanie
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
Kombrink, Erich
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
L
Laohavisit, Anuphon
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Laporte, Philippe
- You have accessRestricted AccessA Novel Plant Leucine-Rich Repeat Receptor Kinase Regulates the Response of Medicago truncatula Roots to Salt StressLaura de Lorenzo, Francisco Merchan, Philippe Laporte, Richard Thompson, Jonathan Clarke, Carolina Sousa, Martín CrespiPlant Cell Feb 2009, 21 (2) 668-680; DOI: https://doi.org/10.1105/tpc.108.059576
This work examines a leucine-rich repeat-like kinase (RLK) induced in response to salt stress in the model legume Medicago truncatula. Mutants in this gene showed an impaired physiological and molecular response to high salt and accumulate less salt in their tissues. This RLK plays a key role in the adaptation of M. truncatula to salt stress.
Lauri, Andrea
- You have accessRestricted AccessNuclear Activity of ROXY1, a Glutaredoxin Interacting with TGA Factors, Is Required for Petal Development in Arabidopsis thalianaShutian Li, Andrea Lauri, Mark Ziemann, Andrea Busch, Mrinal Bhave, Sabine ZachgoPlant Cell Feb 2009, 21 (2) 429-441; DOI: https://doi.org/10.1105/tpc.108.064477
Glutaredoxins are ubiquitous glutathione-dependent oxidoreductases that are associated mainly with redox-regulated processes participating in stress responses. This work shows that ROXY1, a CC-type glutaredoxin, acts in the nucleus to influence petal primordia initiation and later petal morphogenesis, likely by modifying TGA transcription factors posttranslationally.
Lécureuil, Alain
- You have accessRestricted AccessThe Arabidopsis Proteasome RPT5 Subunits Are Essential for Gametophyte Development and Show Accession-Dependent RedundancyJean-Luc Gallois, Anouchka Guyon-Debast, Alain Lécureuil, Daniel Vezon, Virginie Carpentier, Sandrine Bonhomme, Philippe GuerchePlant Cell Feb 2009, 21 (2) 442-459; DOI: https://doi.org/10.1105/tpc.108.062372
This work shows that the proteasome Regulatory Particle 5 (RPT5) subunits are essential for male and female gametophyte development. Analysis of mutants for both genes encoding these subunits in two different Arabidopsis accessions also highlights that redundancy between the two RPT5 genes is accession dependent and in particular that the rpt5a mutant phenotype depends on its background.
Lee, Doheon
- You have accessRestricted AccessGenome-Wide Analysis of Genes Targeted by PHYTOCHROME INTERACTING FACTOR 3-LIKE5 during Seed Germination in ArabidopsisEunkyoo Oh, Hyojin Kang, Shinjiro Yamaguchi, Jeongmoo Park, Doheon Lee, Yuji Kamiya, Giltsu ChoiPlant Cell Feb 2009, 21 (2) 403-419; DOI: https://doi.org/10.1105/tpc.108.064691
PIL5 is a phytochrome-interacting bHLH transcription factor that regulates seed germination. This work identifies genes directly targeted by PIL5 through comparison of microarray and ChIP-chip data. The analysis of the target genes shows that PIL5 regulates seed germination by coordinating various hormone signaling pathways and by modifying cell wall properties in imbibed seeds.
Lee, Hyun Kyung
- You have accessRestricted AccessDrought Stress-Induced Rma1H1, a RING Membrane-Anchor E3 Ubiquitin Ligase Homolog, Regulates Aquaporin Levels via Ubiquitination in Transgenic Arabidopsis PlantsHyun Kyung Lee, Seok Keun Cho, Ora Son, Zhengyi Xu, Inhwan Hwang, Woo Taek KimPlant Cell Feb 2009, 21 (2) 622-641; DOI: https://doi.org/10.1105/tpc.108.061994
The role of ubiquitination in responses to abiotic stresses is not clearly understood. This work shows that overexpression of a hot pepper homolog of a human ubiquitin ligase results in markedly increased tolerance to severe drought stress in transgenic Arabidopsis plants by ubiquitinating the water channel protein aquaporin.
Lee, Kwang-Hee
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
Lee, Yong-Hwan
- Open AccessThe ER Chaperone LHS1 Is Involved in Asexual Development and Rice Infection by the Blast Fungus Magnaporthe oryzaeMihwa Yi, Myoung-Hwan Chi, Chang Hyun Khang, Sook-Young Park, Seogchan Kang, Barbara Valent, Yong-Hwan LeePlant Cell Feb 2009, 21 (2) 681-695; DOI: https://doi.org/10.1105/tpc.107.055988
Magnaporthe oryzae LHS1 is an ER protein that functions in the unfolded protein response, as shown in yeast and plant systems. Disruption of the LHS1 gene causes improper processing and secretion of proteins. This disproportionately impacts early plant colonization steps in the compatible interaction and induction of plant defenses in the incompatible interaction.
Leflon, Martine
- You have accessRestricted AccessGenetic Regulation of Meiotic Cross-Overs between Related Genomes in Brassica napus Haploids and HybridsStéphane D. Nicolas, Martine Leflon, Hervé Monod, Frédérique Eber, Olivier Coriton, Virginie Huteau, Anne-Marie Chèvre, Eric JenczewskiPlant Cell Feb 2009, 21 (2) 373-385; DOI: https://doi.org/10.1105/tpc.108.062273
Precise control of chromosome recombination is vital for conferring genome and meiotic stability and, thus, fitness of sexually reproductive polyploids. This work provides new insights on the genetic system that regulates the number of associations between nonhomologous chromosomes during meiosis of Brassica napus haploids.
Le Signor, Christine
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
Li, Guangming
- Open AccessThe E3 Ubiquitin Ligase SCFTIR1/AFB and Membrane Sterols Play Key Roles in Auxin Regulation of Endocytosis, Recycling, and Plasma Membrane Accumulation of the Auxin Efflux Transporter PIN2 in Arabidopsis thalianaJianwei Pan, Shozo Fujioka, Jianling Peng, Jianghua Chen, Guangming Li, Rujin ChenPlant Cell Feb 2009, 21 (2) 568-580; DOI: https://doi.org/10.1105/tpc.108.061465
The PIN auxin efflux transporters, which are themselves regulated by auxin, determine the direction and rate of intercellular auxin flow. This work shows that the auxin regulation of endocytosis, recycling, and plasma membrane accumulation of specific plasma membrane–resident proteins, including some PIN proteins, is dependent on a ubiquitin ligase and on membrane sterols.
Li, Jigang
- You have accessRestricted AccessPhytochrome A Mediates Rapid Red Light–Induced Phosphorylation of Arabidopsis FAR-RED ELONGATED HYPOCOTYL1 in a Low Fluence ResponseYunping Shen, Zhenzhen Zhou, Suhua Feng, Jigang Li, Anna Tan-Wilson, Li-Jia Qu, Haiyang Wang, Xing Wang DengPlant Cell Feb 2009, 21 (2) 494-506; DOI: https://doi.org/10.1105/tpc.108.061259
This work analyzes the protein–protein interactions between phytochrome A (phyA) and two far-red light signaling proteins (FHY1 and FHL). In addition, it finds that phyA exhibits kinase activity toward FHY1 in vitro and that FHY1 undergoes phyA-dependent phosphorylation during dark to red light transition, revealing a role of phyA in regulating this low fluence response.
Li, Shutian
- You have accessRestricted AccessNuclear Activity of ROXY1, a Glutaredoxin Interacting with TGA Factors, Is Required for Petal Development in Arabidopsis thalianaShutian Li, Andrea Lauri, Mark Ziemann, Andrea Busch, Mrinal Bhave, Sabine ZachgoPlant Cell Feb 2009, 21 (2) 429-441; DOI: https://doi.org/10.1105/tpc.108.064477
Glutaredoxins are ubiquitous glutathione-dependent oxidoreductases that are associated mainly with redox-regulated processes participating in stress responses. This work shows that ROXY1, a CC-type glutaredoxin, acts in the nucleus to influence petal primordia initiation and later petal morphogenesis, likely by modifying TGA transcription factors posttranslationally.
Liu, Jun
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
M
Ma, Jian Feng
- You have accessRestricted AccessA Bacterial-Type ABC Transporter Is Involved in Aluminum Tolerance in RiceChao Feng Huang, Naoki Yamaji, Namiki Mitani, Masahiro Yano, Yoshiaki Nagamura, Jian Feng MaPlant Cell Feb 2009, 21 (2) 655-667; DOI: https://doi.org/10.1105/tpc.108.064543
Aluminum toxicity is a major factor limiting crop production in acidic soil. This work identifies two genes (STAR1 and STAR2) involved in aluminum tolerance in rice. STAR1 encodes a nucleotide binding domain of a putative ABC transporter. It interacts with STAR2, which encodes a transmembrane domain protein, to form an ABC transporter complex that transports UDP-glucose.
Macpherson, Neil
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Maule, Andrew J.
- You have accessRestricted AccessAn Arabidopsis GPI-Anchor Plasmodesmal Neck Protein with Callose Binding Activity and Potential to Regulate Cell-to-Cell TraffickingClare Simpson, Carole Thomas, Kim Findlay, Emmanuelle Bayer, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 581-594; DOI: https://doi.org/10.1105/tpc.108.060145
This work contributes to our understanding of plasmodesmal (Pd) structure and function through the identification of a novel Pd protein. This protein shows binding to callose, a component important in Pd regulation, and accordingly the protein appears to influence molecular flux through these cell-to-cell communication channels.
- You have accessRestricted AccessThe Cytosolic Protein Response as a Subcomponent of the Wider Heat Shock Response in ArabidopsisAkiko Sugio, René Dreos, Frederic Aparicio, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 642-654; DOI: https://doi.org/10.1105/tpc.108.062596
Accumulation of misfolded protein in the cytosol of Arabidopsis, for example following heat shock, activates a stress response that includes a range of specific transcriptional events. This response was found to be partly regulated by the transcription factor HsfA2.
McClung, C. Robertson
- You have accessRestricted AccessArabidopsis Photorespiratory Serine Hydroxymethyltransferase Activity Requires the Mitochondrial Accumulation of Ferredoxin-Dependent Glutamate SynthaseAziz Jamai, Patrice A. Salomé, Stephen H. Schilling, Andreas P.M. Weber, C. Robertson McClungPlant Cell Feb 2009, 21 (2) 595-606; DOI: https://doi.org/10.1105/tpc.108.063289
Photorespiration is the light-stimulated consumption of oxygen and evolution of carbon dioxide that occurs at ambient levels of carbon dioxide. Ferredoxin-dependent Glutamate Synthase, a key enzyme in the photorespiratory cycle previously known to localize in chloroplasts, is shown to occur also in mitochondria, where it interacts with serine hydroxymethyltransferase.
McKim, Sarah M.
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
Merchan, Francisco
- You have accessRestricted AccessA Novel Plant Leucine-Rich Repeat Receptor Kinase Regulates the Response of Medicago truncatula Roots to Salt StressLaura de Lorenzo, Francisco Merchan, Philippe Laporte, Richard Thompson, Jonathan Clarke, Carolina Sousa, Martín CrespiPlant Cell Feb 2009, 21 (2) 668-680; DOI: https://doi.org/10.1105/tpc.108.059576
This work examines a leucine-rich repeat-like kinase (RLK) induced in response to salt stress in the model legume Medicago truncatula. Mutants in this gene showed an impaired physiological and molecular response to high salt and accumulate less salt in their tissues. This RLK plays a key role in the adaptation of M. truncatula to salt stress.
Miedema, Henk
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Mitani, Namiki
- You have accessRestricted AccessA Bacterial-Type ABC Transporter Is Involved in Aluminum Tolerance in RiceChao Feng Huang, Naoki Yamaji, Namiki Mitani, Masahiro Yano, Yoshiaki Nagamura, Jian Feng MaPlant Cell Feb 2009, 21 (2) 655-667; DOI: https://doi.org/10.1105/tpc.108.064543
Aluminum toxicity is a major factor limiting crop production in acidic soil. This work identifies two genes (STAR1 and STAR2) involved in aluminum tolerance in rice. STAR1 encodes a nucleotide binding domain of a putative ABC transporter. It interacts with STAR2, which encodes a transmembrane domain protein, to form an ABC transporter complex that transports UDP-glucose.
Monod, Hervé
- You have accessRestricted AccessGenetic Regulation of Meiotic Cross-Overs between Related Genomes in Brassica napus Haploids and HybridsStéphane D. Nicolas, Martine Leflon, Hervé Monod, Frédérique Eber, Olivier Coriton, Virginie Huteau, Anne-Marie Chèvre, Eric JenczewskiPlant Cell Feb 2009, 21 (2) 373-385; DOI: https://doi.org/10.1105/tpc.108.062273
Precise control of chromosome recombination is vital for conferring genome and meiotic stability and, thus, fitness of sexually reproductive polyploids. This work provides new insights on the genetic system that regulates the number of associations between nonhomologous chromosomes during meiosis of Brassica napus haploids.
Moreau, Carol
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
Mortimer, Jennifer C.
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Muñoz, Alfonso
- You have accessRestricted AccessGRAS Proteins Form a DNA Binding Complex to Induce Gene Expression during Nodulation Signaling in Medicago truncatulaSibylle Hirsch, Jiyoung Kim, Alfonso Muñoz, Anne B. Heckmann, J. Allan Downie, Giles E.D. OldroydPlant Cell Feb 2009, 21 (2) 545-557; DOI: https://doi.org/10.1105/tpc.108.064501
Two GRAS domain Nodulation Signaling Pathway proteins, NSP1 and NSP2, from Medicago truncatula form a complex on the promoters of Nod factor–inducible genes. This complex is enhanced upon Nod factor elicitation, and the interaction between NSP1 and NSP2 is necessary for efficient nodulation.
N
Nagamura, Yoshiaki
- You have accessRestricted AccessA Bacterial-Type ABC Transporter Is Involved in Aluminum Tolerance in RiceChao Feng Huang, Naoki Yamaji, Namiki Mitani, Masahiro Yano, Yoshiaki Nagamura, Jian Feng MaPlant Cell Feb 2009, 21 (2) 655-667; DOI: https://doi.org/10.1105/tpc.108.064543
Aluminum toxicity is a major factor limiting crop production in acidic soil. This work identifies two genes (STAR1 and STAR2) involved in aluminum tolerance in rice. STAR1 encodes a nucleotide binding domain of a putative ABC transporter. It interacts with STAR2, which encodes a transmembrane domain protein, to form an ABC transporter complex that transports UDP-glucose.
Nicolas, Stéphane D.
- You have accessRestricted AccessGenetic Regulation of Meiotic Cross-Overs between Related Genomes in Brassica napus Haploids and HybridsStéphane D. Nicolas, Martine Leflon, Hervé Monod, Frédérique Eber, Olivier Coriton, Virginie Huteau, Anne-Marie Chèvre, Eric JenczewskiPlant Cell Feb 2009, 21 (2) 373-385; DOI: https://doi.org/10.1105/tpc.108.062273
Precise control of chromosome recombination is vital for conferring genome and meiotic stability and, thus, fitness of sexually reproductive polyploids. This work provides new insights on the genetic system that regulates the number of associations between nonhomologous chromosomes during meiosis of Brassica napus haploids.
Nielsen, Erik
- You have accessRestricted AccessThe Rab GTPase RabA4d Regulates Pollen Tube Tip Growth in Arabidopsis thalianaAmy L. Szumlanski, Erik NielsenPlant Cell Feb 2009, 21 (2) 526-544; DOI: https://doi.org/10.1105/tpc.108.060277
Pollen tubes are characterized by a polarized form of cell growth and a requirement for highly regulated intracellular trafficking. Here, we show that RabA4d, a pollen-specific member of the RabA family of Rab GTPase proteins, is necessary for normal pollen tube growth. The loss of this gene leads to dramatic changes in pollen tube morphology and functionality.
O
Oh, Eunkyoo
- You have accessRestricted AccessGenome-Wide Analysis of Genes Targeted by PHYTOCHROME INTERACTING FACTOR 3-LIKE5 during Seed Germination in ArabidopsisEunkyoo Oh, Hyojin Kang, Shinjiro Yamaguchi, Jeongmoo Park, Doheon Lee, Yuji Kamiya, Giltsu ChoiPlant Cell Feb 2009, 21 (2) 403-419; DOI: https://doi.org/10.1105/tpc.108.064691
PIL5 is a phytochrome-interacting bHLH transcription factor that regulates seed germination. This work identifies genes directly targeted by PIL5 through comparison of microarray and ChIP-chip data. The analysis of the target genes shows that PIL5 regulates seed germination by coordinating various hormone signaling pathways and by modifying cell wall properties in imbibed seeds.
Oldroyd, Giles E.D.
- You have accessRestricted AccessGRAS Proteins Form a DNA Binding Complex to Induce Gene Expression during Nodulation Signaling in Medicago truncatulaSibylle Hirsch, Jiyoung Kim, Alfonso Muñoz, Anne B. Heckmann, J. Allan Downie, Giles E.D. OldroydPlant Cell Feb 2009, 21 (2) 545-557; DOI: https://doi.org/10.1105/tpc.108.064501
Two GRAS domain Nodulation Signaling Pathway proteins, NSP1 and NSP2, from Medicago truncatula form a complex on the promoters of Nod factor–inducible genes. This complex is enhanced upon Nod factor elicitation, and the interaction between NSP1 and NSP2 is necessary for efficient nodulation.
P
Pan, Jianwei
- Open AccessThe E3 Ubiquitin Ligase SCFTIR1/AFB and Membrane Sterols Play Key Roles in Auxin Regulation of Endocytosis, Recycling, and Plasma Membrane Accumulation of the Auxin Efflux Transporter PIN2 in Arabidopsis thalianaJianwei Pan, Shozo Fujioka, Jianling Peng, Jianghua Chen, Guangming Li, Rujin ChenPlant Cell Feb 2009, 21 (2) 568-580; DOI: https://doi.org/10.1105/tpc.108.061465
The PIN auxin efflux transporters, which are themselves regulated by auxin, determine the direction and rate of intercellular auxin flow. This work shows that the auxin regulation of endocytosis, recycling, and plasma membrane accumulation of specific plasma membrane–resident proteins, including some PIN proteins, is dependent on a ubiquitin ligase and on membrane sterols.
Park, Jeongmoo
- You have accessRestricted AccessGenome-Wide Analysis of Genes Targeted by PHYTOCHROME INTERACTING FACTOR 3-LIKE5 during Seed Germination in ArabidopsisEunkyoo Oh, Hyojin Kang, Shinjiro Yamaguchi, Jeongmoo Park, Doheon Lee, Yuji Kamiya, Giltsu ChoiPlant Cell Feb 2009, 21 (2) 403-419; DOI: https://doi.org/10.1105/tpc.108.064691
PIL5 is a phytochrome-interacting bHLH transcription factor that regulates seed germination. This work identifies genes directly targeted by PIL5 through comparison of microarray and ChIP-chip data. The analysis of the target genes shows that PIL5 regulates seed germination by coordinating various hormone signaling pathways and by modifying cell wall properties in imbibed seeds.
Park, Sook-Young
- Open AccessThe ER Chaperone LHS1 Is Involved in Asexual Development and Rice Infection by the Blast Fungus Magnaporthe oryzaeMihwa Yi, Myoung-Hwan Chi, Chang Hyun Khang, Sook-Young Park, Seogchan Kang, Barbara Valent, Yong-Hwan LeePlant Cell Feb 2009, 21 (2) 681-695; DOI: https://doi.org/10.1105/tpc.107.055988
Magnaporthe oryzae LHS1 is an ER protein that functions in the unfolded protein response, as shown in yeast and plant systems. Disruption of the LHS1 gene causes improper processing and secretion of proteins. This disproportionately impacts early plant colonization steps in the compatible interaction and induction of plant defenses in the incompatible interaction.
Peng, Jianling
- Open AccessThe E3 Ubiquitin Ligase SCFTIR1/AFB and Membrane Sterols Play Key Roles in Auxin Regulation of Endocytosis, Recycling, and Plasma Membrane Accumulation of the Auxin Efflux Transporter PIN2 in Arabidopsis thalianaJianwei Pan, Shozo Fujioka, Jianling Peng, Jianghua Chen, Guangming Li, Rujin ChenPlant Cell Feb 2009, 21 (2) 568-580; DOI: https://doi.org/10.1105/tpc.108.061465
The PIN auxin efflux transporters, which are themselves regulated by auxin, determine the direction and rate of intercellular auxin flow. This work shows that the auxin regulation of endocytosis, recycling, and plasma membrane accumulation of specific plasma membrane–resident proteins, including some PIN proteins, is dependent on a ubiquitin ligase and on membrane sterols.
Q
Qu, Li-Jia
- You have accessRestricted AccessPhytochrome A Mediates Rapid Red Light–Induced Phosphorylation of Arabidopsis FAR-RED ELONGATED HYPOCOTYL1 in a Low Fluence ResponseYunping Shen, Zhenzhen Zhou, Suhua Feng, Jigang Li, Anna Tan-Wilson, Li-Jia Qu, Haiyang Wang, Xing Wang DengPlant Cell Feb 2009, 21 (2) 494-506; DOI: https://doi.org/10.1105/tpc.108.061259
This work analyzes the protein–protein interactions between phytochrome A (phyA) and two far-red light signaling proteins (FHY1 and FHL). In addition, it finds that phyA exhibits kinase activity toward FHY1 in vitro and that FHY1 undergoes phyA-dependent phosphorylation during dark to red light transition, revealing a role of phyA in regulating this low fluence response.
R
Russo, Laura A.
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
S
Salomé, Patrice A.
- You have accessRestricted AccessArabidopsis Photorespiratory Serine Hydroxymethyltransferase Activity Requires the Mitochondrial Accumulation of Ferredoxin-Dependent Glutamate SynthaseAziz Jamai, Patrice A. Salomé, Stephen H. Schilling, Andreas P.M. Weber, C. Robertson McClungPlant Cell Feb 2009, 21 (2) 595-606; DOI: https://doi.org/10.1105/tpc.108.063289
Photorespiration is the light-stimulated consumption of oxygen and evolution of carbon dioxide that occurs at ambient levels of carbon dioxide. Ferredoxin-dependent Glutamate Synthase, a key enzyme in the photorespiratory cycle previously known to localize in chloroplasts, is shown to occur also in mitochondria, where it interacts with serine hydroxymethyltransferase.
Schachtman, Daniel P.
- You have accessRestricted AccessEthylene Mediates Response and Tolerance to Potassium Deprivation in ArabidopsisJi-Yul Jung, Ryoung Shin, Daniel P. SchachtmanPlant Cell Feb 2009, 21 (2) 607-621; DOI: https://doi.org/10.1105/tpc.108.063099
Plant response to low nutrients is vital for growth and survival. This study shows that the ethylene signaling pathway is induced by potassium deprivation and positively regulates reactive oxygen species production and K+ transporter expression (HAK5) in Arabidopsis roots. Ethylene also enhances plant tolerance to low potassium and modulates root hair elongation and primary root growth.
Schilling, Stephen H.
- You have accessRestricted AccessArabidopsis Photorespiratory Serine Hydroxymethyltransferase Activity Requires the Mitochondrial Accumulation of Ferredoxin-Dependent Glutamate SynthaseAziz Jamai, Patrice A. Salomé, Stephen H. Schilling, Andreas P.M. Weber, C. Robertson McClungPlant Cell Feb 2009, 21 (2) 595-606; DOI: https://doi.org/10.1105/tpc.108.063289
Photorespiration is the light-stimulated consumption of oxygen and evolution of carbon dioxide that occurs at ambient levels of carbon dioxide. Ferredoxin-dependent Glutamate Synthase, a key enzyme in the photorespiratory cycle previously known to localize in chloroplasts, is shown to occur also in mitochondria, where it interacts with serine hydroxymethyltransferase.
Schneider, Katja
- You have accessRestricted AccessA Novel Fatty Acyl-CoA Synthetase Is Required for Pollen Development and Sporopollenin Biosynthesis in ArabidopsisClarice de Azevedo Souza, Sung Soo Kim, Stefanie Koch, Lucie Kienow, Katja Schneider, Sarah M. McKim, George W. Haughn, Erich Kombrink, Carl J. DouglasPlant Cell Feb 2009, 21 (2) 507-525; DOI: https://doi.org/10.1105/tpc.108.062513
This study implicates an acyl-CoA synthetase that is preferentially expressed in flowers in the sporopollenin biosynthesis pathway in Arabidopsis. ACOS5 was found to localize to the cytoplasm of tapetal cells, to act on medium-chain fatty acids, and to be required for pollen formation.
Shen, Yunping
- You have accessRestricted AccessPhytochrome A Mediates Rapid Red Light–Induced Phosphorylation of Arabidopsis FAR-RED ELONGATED HYPOCOTYL1 in a Low Fluence ResponseYunping Shen, Zhenzhen Zhou, Suhua Feng, Jigang Li, Anna Tan-Wilson, Li-Jia Qu, Haiyang Wang, Xing Wang DengPlant Cell Feb 2009, 21 (2) 494-506; DOI: https://doi.org/10.1105/tpc.108.061259
This work analyzes the protein–protein interactions between phytochrome A (phyA) and two far-red light signaling proteins (FHY1 and FHL). In addition, it finds that phyA exhibits kinase activity toward FHY1 in vitro and that FHY1 undergoes phyA-dependent phosphorylation during dark to red light transition, revealing a role of phyA in regulating this low fluence response.
Shin, Ryoung
- You have accessRestricted AccessEthylene Mediates Response and Tolerance to Potassium Deprivation in ArabidopsisJi-Yul Jung, Ryoung Shin, Daniel P. SchachtmanPlant Cell Feb 2009, 21 (2) 607-621; DOI: https://doi.org/10.1105/tpc.108.063099
Plant response to low nutrients is vital for growth and survival. This study shows that the ethylene signaling pathway is induced by potassium deprivation and positively regulates reactive oxygen species production and K+ transporter expression (HAK5) in Arabidopsis roots. Ethylene also enhances plant tolerance to low potassium and modulates root hair elongation and primary root growth.
Simpson, Clare
- You have accessRestricted AccessAn Arabidopsis GPI-Anchor Plasmodesmal Neck Protein with Callose Binding Activity and Potential to Regulate Cell-to-Cell TraffickingClare Simpson, Carole Thomas, Kim Findlay, Emmanuelle Bayer, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 581-594; DOI: https://doi.org/10.1105/tpc.108.060145
This work contributes to our understanding of plasmodesmal (Pd) structure and function through the identification of a novel Pd protein. This protein shows binding to callose, a component important in Pd regulation, and accordingly the protein appears to influence molecular flux through these cell-to-cell communication channels.
Smalle, Jan
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
Son, Ora
- You have accessRestricted AccessDrought Stress-Induced Rma1H1, a RING Membrane-Anchor E3 Ubiquitin Ligase Homolog, Regulates Aquaporin Levels via Ubiquitination in Transgenic Arabidopsis PlantsHyun Kyung Lee, Seok Keun Cho, Ora Son, Zhengyi Xu, Inhwan Hwang, Woo Taek KimPlant Cell Feb 2009, 21 (2) 622-641; DOI: https://doi.org/10.1105/tpc.108.061994
The role of ubiquitination in responses to abiotic stresses is not clearly understood. This work shows that overexpression of a hot pepper homolog of a human ubiquitin ligase results in markedly increased tolerance to severe drought stress in transgenic Arabidopsis plants by ubiquitinating the water channel protein aquaporin.
Sousa, Carolina
- You have accessRestricted AccessA Novel Plant Leucine-Rich Repeat Receptor Kinase Regulates the Response of Medicago truncatula Roots to Salt StressLaura de Lorenzo, Francisco Merchan, Philippe Laporte, Richard Thompson, Jonathan Clarke, Carolina Sousa, Martín CrespiPlant Cell Feb 2009, 21 (2) 668-680; DOI: https://doi.org/10.1105/tpc.108.059576
This work examines a leucine-rich repeat-like kinase (RLK) induced in response to salt stress in the model legume Medicago truncatula. Mutants in this gene showed an impaired physiological and molecular response to high salt and accumulate less salt in their tissues. This RLK plays a key role in the adaptation of M. truncatula to salt stress.
Stancombe, Matthew A.
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Sugio, Akiko
- You have accessRestricted AccessThe Cytosolic Protein Response as a Subcomponent of the Wider Heat Shock Response in ArabidopsisAkiko Sugio, René Dreos, Frederic Aparicio, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 642-654; DOI: https://doi.org/10.1105/tpc.108.062596
Accumulation of misfolded protein in the cytosol of Arabidopsis, for example following heat shock, activates a stress response that includes a range of specific transcriptional events. This response was found to be partly regulated by the transcription factor HsfA2.
Szumlanski, Amy L.
- You have accessRestricted AccessThe Rab GTPase RabA4d Regulates Pollen Tube Tip Growth in Arabidopsis thalianaAmy L. Szumlanski, Erik NielsenPlant Cell Feb 2009, 21 (2) 526-544; DOI: https://doi.org/10.1105/tpc.108.060277
Pollen tubes are characterized by a polarized form of cell growth and a requirement for highly regulated intracellular trafficking. Here, we show that RabA4d, a pollen-specific member of the RabA family of Rab GTPase proteins, is necessary for normal pollen tube growth. The loss of this gene leads to dramatic changes in pollen tube morphology and functionality.
T
Takenaka, Mizuki
- You have accessRestricted AccessA DYW Domain–Containing Pentatricopeptide Repeat Protein Is Required for RNA Editing at Multiple Sites in Mitochondria of Arabidopsis thalianaAnja Zehrmann, Daniil Verbitskiy, Johannes A. van der Merwe, Axel Brennicke, Mizuki TakenakaPlant Cell Feb 2009, 21 (2) 558-567; DOI: https://doi.org/10.1105/tpc.108.064535
RNA editing in plant mitochondria changes 400 to 500 Cs to Us, mostly in mRNAs. This article identifies a trans-factor involved in RNA editing in plant mitochondria and reports that single-nucleotide mutations in this pentatricopeptide repeat protein differentially influence editing at the three sites addressed in different mRNAs.
Tan-Wilson, Anna
- You have accessRestricted AccessPhytochrome A Mediates Rapid Red Light–Induced Phosphorylation of Arabidopsis FAR-RED ELONGATED HYPOCOTYL1 in a Low Fluence ResponseYunping Shen, Zhenzhen Zhou, Suhua Feng, Jigang Li, Anna Tan-Wilson, Li-Jia Qu, Haiyang Wang, Xing Wang DengPlant Cell Feb 2009, 21 (2) 494-506; DOI: https://doi.org/10.1105/tpc.108.061259
This work analyzes the protein–protein interactions between phytochrome A (phyA) and two far-red light signaling proteins (FHY1 and FHL). In addition, it finds that phyA exhibits kinase activity toward FHY1 in vitro and that FHY1 undergoes phyA-dependent phosphorylation during dark to red light transition, revealing a role of phyA in regulating this low fluence response.
Thomas, Carole
- You have accessRestricted AccessAn Arabidopsis GPI-Anchor Plasmodesmal Neck Protein with Callose Binding Activity and Potential to Regulate Cell-to-Cell TraffickingClare Simpson, Carole Thomas, Kim Findlay, Emmanuelle Bayer, Andrew J. MaulePlant Cell Feb 2009, 21 (2) 581-594; DOI: https://doi.org/10.1105/tpc.108.060145
This work contributes to our understanding of plasmodesmal (Pd) structure and function through the identification of a novel Pd protein. This protein shows binding to callose, a component important in Pd regulation, and accordingly the protein appears to influence molecular flux through these cell-to-cell communication channels.
Thompson, Richard
- You have accessRestricted AccessA Novel Plant Leucine-Rich Repeat Receptor Kinase Regulates the Response of Medicago truncatula Roots to Salt StressLaura de Lorenzo, Francisco Merchan, Philippe Laporte, Richard Thompson, Jonathan Clarke, Carolina Sousa, Martín CrespiPlant Cell Feb 2009, 21 (2) 668-680; DOI: https://doi.org/10.1105/tpc.108.059576
This work examines a leucine-rich repeat-like kinase (RLK) induced in response to salt stress in the model legume Medicago truncatula. Mutants in this gene showed an impaired physiological and molecular response to high salt and accumulate less salt in their tissues. This RLK plays a key role in the adaptation of M. truncatula to salt stress.
Tonelli, Chiara
- You have accessRestricted AccessThe Future of Science: Food and Water for LifeNancy A. Eckardt, Eleonora Cominelli, Massimo Galbiati, Chiara TonelliPlant Cell Feb 2009, 21 (2) 368-372; DOI: https://doi.org/10.1105/tpc.109.066209
Turner, Lynda
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
V
Valent, Barbara
- Open AccessThe ER Chaperone LHS1 Is Involved in Asexual Development and Rice Infection by the Blast Fungus Magnaporthe oryzaeMihwa Yi, Myoung-Hwan Chi, Chang Hyun Khang, Sook-Young Park, Seogchan Kang, Barbara Valent, Yong-Hwan LeePlant Cell Feb 2009, 21 (2) 681-695; DOI: https://doi.org/10.1105/tpc.107.055988
Magnaporthe oryzae LHS1 is an ER protein that functions in the unfolded protein response, as shown in yeast and plant systems. Disruption of the LHS1 gene causes improper processing and secretion of proteins. This disproportionately impacts early plant colonization steps in the compatible interaction and induction of plant defenses in the incompatible interaction.
van der Merwe, Johannes A.
- You have accessRestricted AccessA DYW Domain–Containing Pentatricopeptide Repeat Protein Is Required for RNA Editing at Multiple Sites in Mitochondria of Arabidopsis thalianaAnja Zehrmann, Daniil Verbitskiy, Johannes A. van der Merwe, Axel Brennicke, Mizuki TakenakaPlant Cell Feb 2009, 21 (2) 558-567; DOI: https://doi.org/10.1105/tpc.108.064535
RNA editing in plant mitochondria changes 400 to 500 Cs to Us, mostly in mRNAs. This article identifies a trans-factor involved in RNA editing in plant mitochondria and reports that single-nucleotide mutations in this pentatricopeptide repeat protein differentially influence editing at the three sites addressed in different mRNAs.
Verbitskiy, Daniil
- You have accessRestricted AccessA DYW Domain–Containing Pentatricopeptide Repeat Protein Is Required for RNA Editing at Multiple Sites in Mitochondria of Arabidopsis thalianaAnja Zehrmann, Daniil Verbitskiy, Johannes A. van der Merwe, Axel Brennicke, Mizuki TakenakaPlant Cell Feb 2009, 21 (2) 558-567; DOI: https://doi.org/10.1105/tpc.108.064535
RNA editing in plant mitochondria changes 400 to 500 Cs to Us, mostly in mRNAs. This article identifies a trans-factor involved in RNA editing in plant mitochondria and reports that single-nucleotide mutations in this pentatricopeptide repeat protein differentially influence editing at the three sites addressed in different mRNAs.
Vezon, Daniel
- You have accessRestricted AccessThe Arabidopsis Proteasome RPT5 Subunits Are Essential for Gametophyte Development and Show Accession-Dependent RedundancyJean-Luc Gallois, Anouchka Guyon-Debast, Alain Lécureuil, Daniel Vezon, Virginie Carpentier, Sandrine Bonhomme, Philippe GuerchePlant Cell Feb 2009, 21 (2) 442-459; DOI: https://doi.org/10.1105/tpc.108.062372
This work shows that the proteasome Regulatory Particle 5 (RPT5) subunits are essential for male and female gametophyte development. Analysis of mutants for both genes encoding these subunits in two different Arabidopsis accessions also highlights that redundancy between the two RPT5 genes is accession dependent and in particular that the rpt5a mutant phenotype depends on its background.
Vierstra, Richard D.
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
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Walker, Joseph M.
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
Wang, Haiyang
- You have accessRestricted AccessPhytochrome A Mediates Rapid Red Light–Induced Phosphorylation of Arabidopsis FAR-RED ELONGATED HYPOCOTYL1 in a Low Fluence ResponseYunping Shen, Zhenzhen Zhou, Suhua Feng, Jigang Li, Anna Tan-Wilson, Li-Jia Qu, Haiyang Wang, Xing Wang DengPlant Cell Feb 2009, 21 (2) 494-506; DOI: https://doi.org/10.1105/tpc.108.061259
This work analyzes the protein–protein interactions between phytochrome A (phyA) and two far-red light signaling proteins (FHY1 and FHL). In addition, it finds that phyA exhibits kinase activity toward FHY1 in vitro and that FHY1 undergoes phyA-dependent phosphorylation during dark to red light transition, revealing a role of phyA in regulating this low fluence response.
Wang, Youqun
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
Webb, Alex A.R.
- You have accessRestricted AccessZea mays Annexins Modulate Cytosolic Free Ca2+ and Generate a Ca2+-Permeable ConductanceAnuphon Laohavisit, Jennifer C. Mortimer, Vadim Demidchik, Katy M. Coxon, Matthew A. Stancombe, Neil Macpherson, Colin Brownlee, Andreas Hofmann, Alex A.R. Webb, Henk Miedema, Nicholas H. Battey, Julia M. DaviesPlant Cell Feb 2009, 21 (2) 479-493; DOI: https://doi.org/10.1105/tpc.108.059550
Annexins are soluble proteins capable of binding to membranes. Annexins purified from maize were found to increase cytosolic free calcium in Arabidopsis protoplasts and form a transport route for calcium, possibly by interacting with an unidentified membrane binding protein. These results implicate annexins in the regulation of cell calcium and hence cell signaling and development.
Weber, Andreas P.M.
- You have accessRestricted AccessArabidopsis Photorespiratory Serine Hydroxymethyltransferase Activity Requires the Mitochondrial Accumulation of Ferredoxin-Dependent Glutamate SynthaseAziz Jamai, Patrice A. Salomé, Stephen H. Schilling, Andreas P.M. Weber, C. Robertson McClungPlant Cell Feb 2009, 21 (2) 595-606; DOI: https://doi.org/10.1105/tpc.108.063289
Photorespiration is the light-stimulated consumption of oxygen and evolution of carbon dioxide that occurs at ambient levels of carbon dioxide. Ferredoxin-dependent Glutamate Synthase, a key enzyme in the photorespiratory cycle previously known to localize in chloroplasts, is shown to occur also in mitochondria, where it interacts with serine hydroxymethyltransferase.
Weller, James
- Open AccessTendril-less Regulates Tendril Formation in Pea LeavesJulie Hofer, Lynda Turner, Carol Moreau, Mike Ambrose, Peter Isaac, Susan Butcher, James Weller, Adeline Dupin, Marion Dalmais, Christine Le Signor, Abdelhafid Bendahmane, Noel EllisPlant Cell Feb 2009, 21 (2) 420-428; DOI: https://doi.org/10.1105/tpc.108.064071
The gene that determines the formation of tendrils, novel filamentous leaf organs present in peas and their allies, has been identified as Tendril-less, encoding a Class I homeodomain leucine zipper transcription factor. Characterization of mutants shows that these tendrils are modified leaflets, inhibited from laminar development by the action of the Tendril-less gene.
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Xu, Zhengyi
- You have accessRestricted AccessDrought Stress-Induced Rma1H1, a RING Membrane-Anchor E3 Ubiquitin Ligase Homolog, Regulates Aquaporin Levels via Ubiquitination in Transgenic Arabidopsis PlantsHyun Kyung Lee, Seok Keun Cho, Ora Son, Zhengyi Xu, Inhwan Hwang, Woo Taek KimPlant Cell Feb 2009, 21 (2) 622-641; DOI: https://doi.org/10.1105/tpc.108.061994
The role of ubiquitination in responses to abiotic stresses is not clearly understood. This work shows that overexpression of a hot pepper homolog of a human ubiquitin ligase results in markedly increased tolerance to severe drought stress in transgenic Arabidopsis plants by ubiquitinating the water channel protein aquaporin.
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Yamaguchi, Shinjiro
- You have accessRestricted AccessGenome-Wide Analysis of Genes Targeted by PHYTOCHROME INTERACTING FACTOR 3-LIKE5 during Seed Germination in ArabidopsisEunkyoo Oh, Hyojin Kang, Shinjiro Yamaguchi, Jeongmoo Park, Doheon Lee, Yuji Kamiya, Giltsu ChoiPlant Cell Feb 2009, 21 (2) 403-419; DOI: https://doi.org/10.1105/tpc.108.064691
PIL5 is a phytochrome-interacting bHLH transcription factor that regulates seed germination. This work identifies genes directly targeted by PIL5 through comparison of microarray and ChIP-chip data. The analysis of the target genes shows that PIL5 regulates seed germination by coordinating various hormone signaling pathways and by modifying cell wall properties in imbibed seeds.
Yamaji, Naoki
- You have accessRestricted AccessA Bacterial-Type ABC Transporter Is Involved in Aluminum Tolerance in RiceChao Feng Huang, Naoki Yamaji, Namiki Mitani, Masahiro Yano, Yoshiaki Nagamura, Jian Feng MaPlant Cell Feb 2009, 21 (2) 655-667; DOI: https://doi.org/10.1105/tpc.108.064543
Aluminum toxicity is a major factor limiting crop production in acidic soil. This work identifies two genes (STAR1 and STAR2) involved in aluminum tolerance in rice. STAR1 encodes a nucleotide binding domain of a putative ABC transporter. It interacts with STAR2, which encodes a transmembrane domain protein, to form an ABC transporter complex that transports UDP-glucose.
Yang, Peizhen
- You have accessRestricted AccessThe RPN5 Subunit of the 26s Proteasome Is Essential for Gametogenesis, Sporophyte Development, and Complex Assembly in ArabidopsisAdam J. Book, Jan Smalle, Kwang-Hee Lee, Peizhen Yang, Joseph M. Walker, Sarah Casper, James H. Holmes, Laura A. Russo, Zachri W. Buzzinotti, Pablo D. Jenik, Richard D. VierstraPlant Cell Feb 2009, 21 (2) 460-478; DOI: https://doi.org/10.1105/tpc.108.064444
This study explores the function of two highly conserved isoforms of the Arabidopsis 26S proteasome subunit RPN5. The data point to a specific role for RPN5 in the plant 26S proteasome and suggest that its two isoforms in Arabidopsis have both redundant and unique roles in development.
Yang, Qing
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
Yang, Tao
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
Yano, Masahiro
- You have accessRestricted AccessA Bacterial-Type ABC Transporter Is Involved in Aluminum Tolerance in RiceChao Feng Huang, Naoki Yamaji, Namiki Mitani, Masahiro Yano, Yoshiaki Nagamura, Jian Feng MaPlant Cell Feb 2009, 21 (2) 655-667; DOI: https://doi.org/10.1105/tpc.108.064543
Aluminum toxicity is a major factor limiting crop production in acidic soil. This work identifies two genes (STAR1 and STAR2) involved in aluminum tolerance in rice. STAR1 encodes a nucleotide binding domain of a putative ABC transporter. It interacts with STAR2, which encodes a transmembrane domain protein, to form an ABC transporter complex that transports UDP-glucose.
Yi, Mihwa
- Open AccessThe ER Chaperone LHS1 Is Involved in Asexual Development and Rice Infection by the Blast Fungus Magnaporthe oryzaeMihwa Yi, Myoung-Hwan Chi, Chang Hyun Khang, Sook-Young Park, Seogchan Kang, Barbara Valent, Yong-Hwan LeePlant Cell Feb 2009, 21 (2) 681-695; DOI: https://doi.org/10.1105/tpc.107.055988
Magnaporthe oryzae LHS1 is an ER protein that functions in the unfolded protein response, as shown in yeast and plant systems. Disruption of the LHS1 gene causes improper processing and secretion of proteins. This disproportionately impacts early plant colonization steps in the compatible interaction and induction of plant defenses in the incompatible interaction.
Yin, Haibo
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
Z
Zachgo, Sabine
- You have accessRestricted AccessNuclear Activity of ROXY1, a Glutaredoxin Interacting with TGA Factors, Is Required for Petal Development in Arabidopsis thalianaShutian Li, Andrea Lauri, Mark Ziemann, Andrea Busch, Mrinal Bhave, Sabine ZachgoPlant Cell Feb 2009, 21 (2) 429-441; DOI: https://doi.org/10.1105/tpc.108.064477
Glutaredoxins are ubiquitous glutathione-dependent oxidoreductases that are associated mainly with redox-regulated processes participating in stress responses. This work shows that ROXY1, a CC-type glutaredoxin, acts in the nucleus to influence petal primordia initiation and later petal morphogenesis, likely by modifying TGA transcription factors posttranslationally.
Zehrmann, Anja
- You have accessRestricted AccessA DYW Domain–Containing Pentatricopeptide Repeat Protein Is Required for RNA Editing at Multiple Sites in Mitochondria of Arabidopsis thalianaAnja Zehrmann, Daniil Verbitskiy, Johannes A. van der Merwe, Axel Brennicke, Mizuki TakenakaPlant Cell Feb 2009, 21 (2) 558-567; DOI: https://doi.org/10.1105/tpc.108.064535
RNA editing in plant mitochondria changes 400 to 500 Cs to Us, mostly in mRNAs. This article identifies a trans-factor involved in RNA editing in plant mitochondria and reports that single-nucleotide mutations in this pentatricopeptide repeat protein differentially influence editing at the three sites addressed in different mRNAs.
Zhang, Xia
- Open AccessEpigenetic Regulation, Somatic Homologous Recombination, and Abscisic Acid Signaling Are Influenced by DNA Polymerase ϵ Mutation in ArabidopsisHaibo Yin, Xia Zhang, Jun Liu, Youqun Wang, Junna He, Tao Yang, Xuhui Hong, Qing Yang, Zhizhong GongPlant Cell Feb 2009, 21 (2) 386-402; DOI: https://doi.org/10.1105/tpc.108.061549
This work examines an abscisic acid (ABA)–sensitive mutant, which is caused by mutation of DNA polymerase ϵ. This hypomorphic mutation caused increased somatic homologous recombination, sensitivity to DNA-damaging agents, activation of silenced loci, and early flowering, indicating a role for DNA replication enzymes in maintenance of epigenetic states and in ABA signaling.
Zhou, Zhenzhen
- You have accessRestricted AccessPhytochrome A Mediates Rapid Red Light–Induced Phosphorylation of Arabidopsis FAR-RED ELONGATED HYPOCOTYL1 in a Low Fluence ResponseYunping Shen, Zhenzhen Zhou, Suhua Feng, Jigang Li, Anna Tan-Wilson, Li-Jia Qu, Haiyang Wang, Xing Wang DengPlant Cell Feb 2009, 21 (2) 494-506; DOI: https://doi.org/10.1105/tpc.108.061259
This work analyzes the protein–protein interactions between phytochrome A (phyA) and two far-red light signaling proteins (FHY1 and FHL). In addition, it finds that phyA exhibits kinase activity toward FHY1 in vitro and that FHY1 undergoes phyA-dependent phosphorylation during dark to red light transition, revealing a role of phyA in regulating this low fluence response.
Ziemann, Mark
- You have accessRestricted AccessNuclear Activity of ROXY1, a Glutaredoxin Interacting with TGA Factors, Is Required for Petal Development in Arabidopsis thalianaShutian Li, Andrea Lauri, Mark Ziemann, Andrea Busch, Mrinal Bhave, Sabine ZachgoPlant Cell Feb 2009, 21 (2) 429-441; DOI: https://doi.org/10.1105/tpc.108.064477
Glutaredoxins are ubiquitous glutathione-dependent oxidoreductases that are associated mainly with redox-regulated processes participating in stress responses. This work shows that ROXY1, a CC-type glutaredoxin, acts in the nucleus to influence petal primordia initiation and later petal morphogenesis, likely by modifying TGA transcription factors posttranslationally.