Table of Contents
A
Aakre, Chris D.
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Amasino, Richard M.
- You have accessRestricted AccessThe RNA Binding Protein ELF9 Directly Reduces SUPPRESSOR OF OVEREXPRESSION OF CO1 Transcript Levels in Arabidopsis, Possibly via Nonsense-Mediated mRNA DecayHae-Ryong Song, Ju-Dong Song, Jung-Nam Cho, Richard M. Amasino, Bosl Noh, Yoo-Sun NohPlant Cell Apr 2009, 21 (4) 1195-1211; DOI: https://doi.org/10.1105/tpc.108.064774
This work shows that SOC1 transcripts are directly recognized and regulated by an RNA binding protein EARLY FLOWERING9 (ELF9). In addition, ELF9 regulates multiple transcripts that are the targets of nonsense-mediated mRNA decay (NMD). Thus, ELF9 might be an RNA binding component of the Arabidopsis NMD system.
Aromdee, Dale N.
- You have accessRestricted AccessLeucine Aminopeptidase Regulates Defense and Wound Signaling in Tomato Downstream of Jasmonic AcidJonathan H. Fowler, Javier Narváez-Vásquez, Dale N. Aromdee, Véronique Pautot, Frances M. Holzer, Linda L. WallingPlant Cell Apr 2009, 21 (4) 1239-1251; DOI: https://doi.org/10.1105/tpc.108.065029
This work examines the role of the late wound-response gene Leucine aminopeptidase A (LapA) in herbivory and wound-induced gene expression. Examination of silenced and overexpressing lines indicates that LAP-A promotes defense responses downstream of jasmonic acid.
Asakura, Makoto
- You have accessRestricted AccessAtg26-Mediated Pexophagy Is Required for Host Invasion by the Plant Pathogenic Fungus Colletotrichum orbiculareMakoto Asakura, Sachiko Ninomiya, Miki Sugimoto, Masahide Oku, Shun-ichi Yamashita, Tetsuro Okuno, Yasuyoshi Sakai, Yoshitaka TakanoPlant Cell Apr 2009, 21 (4) 1291-1304; DOI: https://doi.org/10.1105/tpc.108.060996
For plant infection, the cucumber anthracnose fungus requires Atg26, a glucosyl transferase involved in pexophagy, the selective degradation of peroxisomes. Appressoria of an atg26 mutant fail to develop invasion hyphae and show defective pexophagy. Domain analysis of Atg26 suggests that both its phosphoinositide binding domain and catalytic domain are required for pexophagy and pathogenicity.
Asatsuma, Satoru
- Open AccessA Mobile Secretory Vesicle Cluster Involved in Mass Transport from the Golgi to the Plant Cell ExteriorKiminori Toyooka, Yumi Goto, Satoru Asatsuma, Masato Koizumi, Toshiaki Mitsui, Ken MatsuokaPlant Cell Apr 2009, 21 (4) 1212-1229; DOI: https://doi.org/10.1105/tpc.108.058933
Analysis of post-Golgi transport machinery revealed a mobile structure of clustered secretory vesicles, termed the secretory vesicle cluster (SVC), which originates from the trans-Golgi network and fuses with plasma membrane or cell plate. The presence of secretory proteins and glycans suggested that SVC is involved in mass transport from the Golgi to the cell exterior.
B
Baranage, Gayathri
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Bertoni, Gregory
- You have accessRestricted AccessPexophagy in Fungal PathogenesisGregory BertoniPlant Cell Apr 2009, 21 (4) 1030; DOI: https://doi.org/10.1105/tpc.109.210413
Bird, David
- Open AccessArabidopsis LTPG Is a Glycosylphosphatidylinositol-Anchored Lipid Transfer Protein Required for Export of Lipids to the Plant SurfaceAllan DeBono, Trevor H. Yeats, Jocelyn K.C. Rose, David Bird, Reinhard Jetter, Ljerka Kunst, Lacey SamuelsPlant Cell Apr 2009, 21 (4) 1230-1238; DOI: https://doi.org/10.1105/tpc.108.064451
It has long been hypothesized that extracellular transfer of lipids across the epidermal cell wall to the waxy cuticle would require lipid transfer proteins (LTPs). An LTP with a GPI-anchor, LTPG, is required for export of wax to the cuticle in the stems of Arabidopsis. LTPG is primarily localized to the plasma membrane, and recombinant LTPG displays binding affinity for a lipophilic analog.
Bischoff, Volker
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
Brady, Siobhan M.
- You have accessRestricted AccessWeb-Queryable Large-Scale Data Sets for Hypothesis Generation in Plant BiologySiobhan M. Brady, Nicholas J. ProvartPlant Cell Apr 2009, 21 (4) 1034-1051; DOI: https://doi.org/10.1105/tpc.109.066050
C
Capper, Richard G.
- Open AccessGLK Transcription Factors Coordinate Expression of the Photosynthetic Apparatus in ArabidopsisMark T. Waters, Peng Wang, Muris Korkaric, Richard G. Capper, Nigel J. Saunders, Jane A. LangdalePlant Cell Apr 2009, 21 (4) 1109-1128; DOI: https://doi.org/10.1105/tpc.108.065250
GOLDEN2-LIKE (GLK) transcription factors are required for normal chloroplast development in several land plants. This study shows that GLK proteins synchronously upregulate genes relating to light harvesting and chlorophyll biosynthesis via direct interaction with promoter sequences. GLK activity most likely optimizes photosynthesis by coordinating responses to variable environmental conditions.
Chen, Yanhui
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Cho, Jung-Nam
- You have accessRestricted AccessThe RNA Binding Protein ELF9 Directly Reduces SUPPRESSOR OF OVEREXPRESSION OF CO1 Transcript Levels in Arabidopsis, Possibly via Nonsense-Mediated mRNA DecayHae-Ryong Song, Ju-Dong Song, Jung-Nam Cho, Richard M. Amasino, Bosl Noh, Yoo-Sun NohPlant Cell Apr 2009, 21 (4) 1195-1211; DOI: https://doi.org/10.1105/tpc.108.064774
This work shows that SOC1 transcripts are directly recognized and regulated by an RNA binding protein EARLY FLOWERING9 (ELF9). In addition, ELF9 regulates multiple transcripts that are the targets of nonsense-mediated mRNA decay (NMD). Thus, ELF9 might be an RNA binding component of the Arabidopsis NMD system.
Coughlan, Sean
- Open AccessInteraction Transcriptome Analysis Identifies Magnaporthe oryzae BAS1-4 as Biotrophy-Associated Secreted Proteins in Rice Blast DiseaseGloria Mosquera, Martha C. Giraldo, Chang Hyun Khang, Sean Coughlan, Barbara ValentPlant Cell Apr 2009, 21 (4) 1273-1290; DOI: https://doi.org/10.1105/tpc.107.055228
The authors analyze host and pathogen gene expression after enrichment for biotrophic invasive hyphae (IH) of Magnaporthe oryzae growing in the first-invaded rice cells. IH express genes encoding biotrophy-associated secreted proteins, some of which accumulate in blast biotrophic interfacial complexes in compatible interactions, resemble known avirulence effectors.
Crowell, Elizabeth Faris
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
D
DeBono, Allan
- Open AccessArabidopsis LTPG Is a Glycosylphosphatidylinositol-Anchored Lipid Transfer Protein Required for Export of Lipids to the Plant SurfaceAllan DeBono, Trevor H. Yeats, Jocelyn K.C. Rose, David Bird, Reinhard Jetter, Ljerka Kunst, Lacey SamuelsPlant Cell Apr 2009, 21 (4) 1230-1238; DOI: https://doi.org/10.1105/tpc.108.064451
It has long been hypothesized that extracellular transfer of lipids across the epidermal cell wall to the waxy cuticle would require lipid transfer proteins (LTPs). An LTP with a GPI-anchor, LTPG, is required for export of wax to the cuticle in the stems of Arabidopsis. LTPG is primarily localized to the plasma membrane, and recombinant LTPG displays binding affinity for a lipophilic analog.
Demura, Taku
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
Deng, Xing Wang
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
Desprez, Thierry
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
E
Eckardt, Nancy A.
- You have accessRestricted AccessDeep Sequencing Maps the Maize Epigenomic LandscapeNancy A. EckardtPlant Cell Apr 2009, 21 (4) 1024-1026; DOI: https://doi.org/10.1105/tpc.109.068064
- You have accessRestricted AccessA Volvox Inversionless Mutant Highlights the Importance of the Extracellular Matrix in MorphogenesisNancy A. EckardtPlant Cell Apr 2009, 21 (4) 1029; DOI: https://doi.org/10.1105/tpc.109.210412
Efremova, Nadia
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
Elling, Axel A.
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
Endo, Satoshi
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
F
Farquharson, Kathleen L.
- You have accessRestricted AccessCortical Microtubules Regulate the Insertion of Cellulose Synthase Complexes in the Plasma MembraneKathleen L. FarquharsonPlant Cell Apr 2009, 21 (4) 1028; DOI: https://doi.org/10.1105/tpc.109.210411
Faust, Andrea
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
Fowler, Jonathan H.
- You have accessRestricted AccessLeucine Aminopeptidase Regulates Defense and Wound Signaling in Tomato Downstream of Jasmonic AcidJonathan H. Fowler, Javier Narváez-Vásquez, Dale N. Aromdee, Véronique Pautot, Frances M. Holzer, Linda L. WallingPlant Cell Apr 2009, 21 (4) 1239-1251; DOI: https://doi.org/10.1105/tpc.108.065029
This work examines the role of the late wound-response gene Leucine aminopeptidase A (LapA) in herbivory and wound-induced gene expression. Examination of silenced and overexpressing lines indicates that LAP-A promotes defense responses downstream of jasmonic acid.
Franke, Benni
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
Fukuda, Hiroo
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
G
Giraldo, Martha C.
- Open AccessInteraction Transcriptome Analysis Identifies Magnaporthe oryzae BAS1-4 as Biotrophy-Associated Secreted Proteins in Rice Blast DiseaseGloria Mosquera, Martha C. Giraldo, Chang Hyun Khang, Sean Coughlan, Barbara ValentPlant Cell Apr 2009, 21 (4) 1273-1290; DOI: https://doi.org/10.1105/tpc.107.055228
The authors analyze host and pathogen gene expression after enrichment for biotrophic invasive hyphae (IH) of Magnaporthe oryzae growing in the first-invaded rice cells. IH express genes encoding biotrophy-associated secreted proteins, some of which accumulate in blast biotrophic interfacial complexes in compatible interactions, resemble known avirulence effectors.
Gonneau, Martine
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
Goto, Yumi
- Open AccessA Mobile Secretory Vesicle Cluster Involved in Mass Transport from the Golgi to the Plant Cell ExteriorKiminori Toyooka, Yumi Goto, Satoru Asatsuma, Masato Koizumi, Toshiaki Mitsui, Ken MatsuokaPlant Cell Apr 2009, 21 (4) 1212-1229; DOI: https://doi.org/10.1105/tpc.108.058933
Analysis of post-Golgi transport machinery revealed a mobile structure of clustered secretory vesicles, termed the secretory vesicle cluster (SVC), which originates from the trans-Golgi network and fuses with plasma membrane or cell plate. The presence of secretory proteins and glycans suggested that SVC is involved in mass transport from the Golgi to the cell exterior.
H
Hagely, Katherine
- You have accessRestricted AccessThe MYB23 Gene Provides a Positive Feedback Loop for Cell Fate Specification in the Arabidopsis Root EpidermisYeon Hee Kang, Victor Kirik, Martin Hulskamp, Kyoung Hee Nam, Katherine Hagely, Myeong Min Lee, John SchiefelbeinPlant Cell Apr 2009, 21 (4) 1080-1094; DOI: https://doi.org/10.1105/tpc.108.063180
The precise specification of distinct cell fates during development requires accurate regulatory mechanisms. This work shows that MYB23 provides a positive transcriptional feedback loop for cell fate specification in the Arabidopsis root epidermis, and together with the previously identified lateral inhibition mechanism, ensures robust establishment of the cell type pattern.
Haslam, Richard P.
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
He, Guangming
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
Höfte, Herman
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
Holzer, Frances M.
- You have accessRestricted AccessLeucine Aminopeptidase Regulates Defense and Wound Signaling in Tomato Downstream of Jasmonic AcidJonathan H. Fowler, Javier Narváez-Vásquez, Dale N. Aromdee, Véronique Pautot, Frances M. Holzer, Linda L. WallingPlant Cell Apr 2009, 21 (4) 1239-1251; DOI: https://doi.org/10.1105/tpc.108.065029
This work examines the role of the late wound-response gene Leucine aminopeptidase A (LapA) in herbivory and wound-induced gene expression. Examination of silenced and overexpressing lines indicates that LAP-A promotes defense responses downstream of jasmonic acid.
Hulskamp, Martin
- You have accessRestricted AccessThe MYB23 Gene Provides a Positive Feedback Loop for Cell Fate Specification in the Arabidopsis Root EpidermisYeon Hee Kang, Victor Kirik, Martin Hulskamp, Kyoung Hee Nam, Katherine Hagely, Myeong Min Lee, John SchiefelbeinPlant Cell Apr 2009, 21 (4) 1080-1094; DOI: https://doi.org/10.1105/tpc.108.063180
The precise specification of distinct cell fates during development requires accurate regulatory mechanisms. This work shows that MYB23 provides a positive transcriptional feedback loop for cell fate specification in the Arabidopsis root epidermis, and together with the previously identified lateral inhibition mechanism, ensures robust establishment of the cell type pattern.
J
Jetter, Reinhard
- Open AccessArabidopsis LTPG Is a Glycosylphosphatidylinositol-Anchored Lipid Transfer Protein Required for Export of Lipids to the Plant SurfaceAllan DeBono, Trevor H. Yeats, Jocelyn K.C. Rose, David Bird, Reinhard Jetter, Ljerka Kunst, Lacey SamuelsPlant Cell Apr 2009, 21 (4) 1230-1238; DOI: https://doi.org/10.1105/tpc.108.064451
It has long been hypothesized that extracellular transfer of lipids across the epidermal cell wall to the waxy cuticle would require lipid transfer proteins (LTPs). An LTP with a GPI-anchor, LTPG, is required for export of wax to the cuticle in the stems of Arabidopsis. LTPG is primarily localized to the plasma membrane, and recombinant LTPG displays binding affinity for a lipophilic analog.
K
Kang, Yeon Hee
- You have accessRestricted AccessThe MYB23 Gene Provides a Positive Feedback Loop for Cell Fate Specification in the Arabidopsis Root EpidermisYeon Hee Kang, Victor Kirik, Martin Hulskamp, Kyoung Hee Nam, Katherine Hagely, Myeong Min Lee, John SchiefelbeinPlant Cell Apr 2009, 21 (4) 1080-1094; DOI: https://doi.org/10.1105/tpc.108.063180
The precise specification of distinct cell fates during development requires accurate regulatory mechanisms. This work shows that MYB23 provides a positive transcriptional feedback loop for cell fate specification in the Arabidopsis root epidermis, and together with the previously identified lateral inhibition mechanism, ensures robust establishment of the cell type pattern.
Khang, Chang Hyun
- Open AccessInteraction Transcriptome Analysis Identifies Magnaporthe oryzae BAS1-4 as Biotrophy-Associated Secreted Proteins in Rice Blast DiseaseGloria Mosquera, Martha C. Giraldo, Chang Hyun Khang, Sean Coughlan, Barbara ValentPlant Cell Apr 2009, 21 (4) 1273-1290; DOI: https://doi.org/10.1105/tpc.107.055228
The authors analyze host and pathogen gene expression after enrichment for biotrophic invasive hyphae (IH) of Magnaporthe oryzae growing in the first-invaded rice cells. IH express genes encoding biotrophy-associated secreted proteins, some of which accumulate in blast biotrophic interfacial complexes in compatible interactions, resemble known avirulence effectors.
Kim, Jung-Gun
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Kirik, Angela
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Kirik, Victor
- You have accessRestricted AccessThe MYB23 Gene Provides a Positive Feedback Loop for Cell Fate Specification in the Arabidopsis Root EpidermisYeon Hee Kang, Victor Kirik, Martin Hulskamp, Kyoung Hee Nam, Katherine Hagely, Myeong Min Lee, John SchiefelbeinPlant Cell Apr 2009, 21 (4) 1080-1094; DOI: https://doi.org/10.1105/tpc.108.063180
The precise specification of distinct cell fates during development requires accurate regulatory mechanisms. This work shows that MYB23 provides a positive transcriptional feedback loop for cell fate specification in the Arabidopsis root epidermis, and together with the previously identified lateral inhibition mechanism, ensures robust establishment of the cell type pattern.
Koizumi, Masato
- Open AccessA Mobile Secretory Vesicle Cluster Involved in Mass Transport from the Golgi to the Plant Cell ExteriorKiminori Toyooka, Yumi Goto, Satoru Asatsuma, Masato Koizumi, Toshiaki Mitsui, Ken MatsuokaPlant Cell Apr 2009, 21 (4) 1212-1229; DOI: https://doi.org/10.1105/tpc.108.058933
Analysis of post-Golgi transport machinery revealed a mobile structure of clustered secretory vesicles, termed the secretory vesicle cluster (SVC), which originates from the trans-Golgi network and fuses with plasma membrane or cell plate. The presence of secretory proteins and glycans suggested that SVC is involved in mass transport from the Golgi to the cell exterior.
Korkaric, Muris
- Open AccessGLK Transcription Factors Coordinate Expression of the Photosynthetic Apparatus in ArabidopsisMark T. Waters, Peng Wang, Muris Korkaric, Richard G. Capper, Nigel J. Saunders, Jane A. LangdalePlant Cell Apr 2009, 21 (4) 1109-1128; DOI: https://doi.org/10.1105/tpc.108.065250
GOLDEN2-LIKE (GLK) transcription factors are required for normal chloroplast development in several land plants. This study shows that GLK proteins synchronously upregulate genes relating to light harvesting and chlorophyll biosynthesis via direct interaction with promoter sequences. GLK activity most likely optimizes photosynthesis by coordinating responses to variable environmental conditions.
Kornet, Noortje
- You have accessRestricted AccessMembers of the GCN5 Histone Acetyltransferase Complex Regulate PLETHORA-Mediated Root Stem Cell Niche Maintenance and Transit Amplifying Cell Proliferation in ArabidopsisNoortje Kornet, Ben ScheresPlant Cell Apr 2009, 21 (4) 1070-1079; DOI: https://doi.org/10.1105/tpc.108.065300
The Arabidopsis GCN5 histone acetyltransferase complex attenuates the recently discovered gradient expression of the PLETHORA genes and thereby regulates root stem cell niche maintenance and proliferation. Therefore, chromatin modifications play an important role in stem cell maintenance and in shaping a developmentally instructive gradient in the root.
Kubo, Minoru
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
Kunst, Ljerka
- Open AccessArabidopsis LTPG Is a Glycosylphosphatidylinositol-Anchored Lipid Transfer Protein Required for Export of Lipids to the Plant SurfaceAllan DeBono, Trevor H. Yeats, Jocelyn K.C. Rose, David Bird, Reinhard Jetter, Ljerka Kunst, Lacey SamuelsPlant Cell Apr 2009, 21 (4) 1230-1238; DOI: https://doi.org/10.1105/tpc.108.064451
It has long been hypothesized that extracellular transfer of lipids across the epidermal cell wall to the waxy cuticle would require lipid transfer proteins (LTPs). An LTP with a GPI-anchor, LTPG, is required for export of wax to the cuticle in the stems of Arabidopsis. LTPG is primarily localized to the plasma membrane, and recombinant LTPG displays binding affinity for a lipophilic analog.
Kurdyukov, Sergey
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
Kuroiwa, Haruko
- You have accessRestricted AccessSuppression of Repeat-Mediated Gross Mitochondrial Genome Rearrangements by RecA in the Moss Physcomitrella patensMasaki Odahara, Haruko Kuroiwa, Tsuneyoshi Kuroiwa, Yasuhiko SekinePlant Cell Apr 2009, 21 (4) 1182-1194; DOI: https://doi.org/10.1105/tpc.108.064709
This work studies the role of a homolog of bacterial recombinase RecA in the dynamics of the plant mitochondrial genome. The analysis of mitochondrial recA disruptants shows that RecA does not promote but rather suppresses recombination among short repeated sequences scattered throughout the mitochondrial genome, thereby maintaining mitochondrial genome stability.
Kuroiwa, Tsuneyoshi
- You have accessRestricted AccessSuppression of Repeat-Mediated Gross Mitochondrial Genome Rearrangements by RecA in the Moss Physcomitrella patensMasaki Odahara, Haruko Kuroiwa, Tsuneyoshi Kuroiwa, Yasuhiko SekinePlant Cell Apr 2009, 21 (4) 1182-1194; DOI: https://doi.org/10.1105/tpc.108.064709
This work studies the role of a homolog of bacterial recombinase RecA in the dynamics of the plant mitochondrial genome. The analysis of mitochondrial recA disruptants shows that RecA does not promote but rather suppresses recombination among short repeated sequences scattered throughout the mitochondrial genome, thereby maintaining mitochondrial genome stability.
Kyozuka, Junko
- You have accessRestricted AccessTwo-Step Regulation of LAX PANICLE1 Protein Accumulation in Axillary Meristem Formation in RiceTetsuo Oikawa, Junko KyozukaPlant Cell Apr 2009, 21 (4) 1095-1108; DOI: https://doi.org/10.1105/tpc.108.065425
The first step of shoot branching is production of axillary meristems (AMs) that are formed in the axils of leaves. Rice LAX PANICLE1 (LAX1) is required for AM formation through the plant's life. Here, we show that LAX1 protein, produced in the boundary between the subtending leaf and the future AM, moves toward the growing AM to establish a new AM.
L
Lalonde, Sylvie
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Langdale, Jane A.
- Open AccessGLK Transcription Factors Coordinate Expression of the Photosynthetic Apparatus in ArabidopsisMark T. Waters, Peng Wang, Muris Korkaric, Richard G. Capper, Nigel J. Saunders, Jane A. LangdalePlant Cell Apr 2009, 21 (4) 1109-1128; DOI: https://doi.org/10.1105/tpc.108.065250
GOLDEN2-LIKE (GLK) transcription factors are required for normal chloroplast development in several land plants. This study shows that GLK proteins synchronously upregulate genes relating to light harvesting and chlorophyll biosynthesis via direct interaction with promoter sequences. GLK activity most likely optimizes photosynthesis by coordinating responses to variable environmental conditions.
Lee, Myeong Min
- You have accessRestricted AccessThe MYB23 Gene Provides a Positive Feedback Loop for Cell Fate Specification in the Arabidopsis Root EpidermisYeon Hee Kang, Victor Kirik, Martin Hulskamp, Kyoung Hee Nam, Katherine Hagely, Myeong Min Lee, John SchiefelbeinPlant Cell Apr 2009, 21 (4) 1080-1094; DOI: https://doi.org/10.1105/tpc.108.063180
The precise specification of distinct cell fates during development requires accurate regulatory mechanisms. This work shows that MYB23 provides a positive transcriptional feedback loop for cell fate specification in the Arabidopsis root epidermis, and together with the previously identified lateral inhibition mechanism, ensures robust establishment of the cell type pattern.
Lee, Y.-R. Julie
- You have accessRestricted AccessThe WD40 Repeat Protein NEDD1 Functions in Microtubule Organization during Cell Division in Arabidopsis thalianaC.J. Tracy Zeng, Y.-R. Julie Lee, Bo LiuPlant Cell Apr 2009, 21 (4) 1129-1140; DOI: https://doi.org/10.1105/tpc.109.065953
Higher plant cells organize microtubules in the absence of a structurally defined microtubule-organizing center. This article reports that the WD40 repeat protein NEDD1 appears preferentially toward the minus ends of microtubules and plays a critical role in microtubule organization during cell division in Arabidopsis thaliana.
Li, Ning
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
Li, Xinyan
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Li, Xueyong
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
Liu, Bo
- You have accessRestricted AccessThe WD40 Repeat Protein NEDD1 Functions in Microtubule Organization during Cell Division in Arabidopsis thalianaC.J. Tracy Zeng, Y.-R. Julie Lee, Bo LiuPlant Cell Apr 2009, 21 (4) 1129-1140; DOI: https://doi.org/10.1105/tpc.109.065953
Higher plant cells organize microtubules in the absence of a structurally defined microtubule-organizing center. This article reports that the WD40 repeat protein NEDD1 appears preferentially toward the minus ends of microtubules and plays a critical role in microtubule organization during cell division in Arabidopsis thaliana.
Liu, X. Shirley
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
M
Mach, Jennifer
- You have accessRestricted AccessRice Axillary Meristem Formation Requires Directional Movement of LAX PANICLE1 ProteinJennifer MachPlant Cell Apr 2009, 21 (4) 1027; DOI: https://doi.org/10.1105/tpc.109.210410
Martin, Cathie
- You have accessRestricted AccessGuidelines for Quantitative RT-PCRCathie MartinPlant Cell Apr 2009, 21 (4) 1023; DOI: https://doi.org/10.1105/tpc.109.210480
Martin, Gregory B.
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Matsuoka, Ken
- Open AccessA Mobile Secretory Vesicle Cluster Involved in Mass Transport from the Golgi to the Plant Cell ExteriorKiminori Toyooka, Yumi Goto, Satoru Asatsuma, Masato Koizumi, Toshiaki Mitsui, Ken MatsuokaPlant Cell Apr 2009, 21 (4) 1212-1229; DOI: https://doi.org/10.1105/tpc.108.058933
Analysis of post-Golgi transport machinery revealed a mobile structure of clustered secretory vesicles, termed the secretory vesicle cluster (SVC), which originates from the trans-Golgi network and fuses with plasma membrane or cell plate. The presence of secretory proteins and glycans suggested that SVC is involved in mass transport from the Golgi to the cell exterior.
McLane, Heather
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Michaelson, Louise V.
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
Mitsui, Toshiaki
- Open AccessA Mobile Secretory Vesicle Cluster Involved in Mass Transport from the Golgi to the Plant Cell ExteriorKiminori Toyooka, Yumi Goto, Satoru Asatsuma, Masato Koizumi, Toshiaki Mitsui, Ken MatsuokaPlant Cell Apr 2009, 21 (4) 1212-1229; DOI: https://doi.org/10.1105/tpc.108.058933
Analysis of post-Golgi transport machinery revealed a mobile structure of clustered secretory vesicles, termed the secretory vesicle cluster (SVC), which originates from the trans-Golgi network and fuses with plasma membrane or cell plate. The presence of secretory proteins and glycans suggested that SVC is involved in mass transport from the Golgi to the cell exterior.
Mosquera, Gloria
- Open AccessInteraction Transcriptome Analysis Identifies Magnaporthe oryzae BAS1-4 as Biotrophy-Associated Secreted Proteins in Rice Blast DiseaseGloria Mosquera, Martha C. Giraldo, Chang Hyun Khang, Sean Coughlan, Barbara ValentPlant Cell Apr 2009, 21 (4) 1273-1290; DOI: https://doi.org/10.1105/tpc.107.055228
The authors analyze host and pathogen gene expression after enrichment for biotrophic invasive hyphae (IH) of Magnaporthe oryzae growing in the first-invaded rice cells. IH express genes encoding biotrophy-associated secreted proteins, some of which accumulate in blast biotrophic interfacial complexes in compatible interactions, resemble known avirulence effectors.
Mudgett, Mary Beth
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
N
Nam, Kyoung Hee
- You have accessRestricted AccessThe MYB23 Gene Provides a Positive Feedback Loop for Cell Fate Specification in the Arabidopsis Root EpidermisYeon Hee Kang, Victor Kirik, Martin Hulskamp, Kyoung Hee Nam, Katherine Hagely, Myeong Min Lee, John SchiefelbeinPlant Cell Apr 2009, 21 (4) 1080-1094; DOI: https://doi.org/10.1105/tpc.108.063180
The precise specification of distinct cell fates during development requires accurate regulatory mechanisms. This work shows that MYB23 provides a positive transcriptional feedback loop for cell fate specification in the Arabidopsis root epidermis, and together with the previously identified lateral inhibition mechanism, ensures robust establishment of the cell type pattern.
Napier, Johnathan A.
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
Narváez-Vásquez, Javier
- You have accessRestricted AccessLeucine Aminopeptidase Regulates Defense and Wound Signaling in Tomato Downstream of Jasmonic AcidJonathan H. Fowler, Javier Narváez-Vásquez, Dale N. Aromdee, Véronique Pautot, Frances M. Holzer, Linda L. WallingPlant Cell Apr 2009, 21 (4) 1239-1251; DOI: https://doi.org/10.1105/tpc.108.065029
This work examines the role of the late wound-response gene Leucine aminopeptidase A (LapA) in herbivory and wound-induced gene expression. Examination of silenced and overexpressing lines indicates that LAP-A promotes defense responses downstream of jasmonic acid.
Ninomiya, Sachiko
- You have accessRestricted AccessAtg26-Mediated Pexophagy Is Required for Host Invasion by the Plant Pathogenic Fungus Colletotrichum orbiculareMakoto Asakura, Sachiko Ninomiya, Miki Sugimoto, Masahide Oku, Shun-ichi Yamashita, Tetsuro Okuno, Yasuyoshi Sakai, Yoshitaka TakanoPlant Cell Apr 2009, 21 (4) 1291-1304; DOI: https://doi.org/10.1105/tpc.108.060996
For plant infection, the cucumber anthracnose fungus requires Atg26, a glucosyl transferase involved in pexophagy, the selective degradation of peroxisomes. Appressoria of an atg26 mutant fail to develop invasion hyphae and show defective pexophagy. Domain analysis of Atg26 suggests that both its phosphoinositide binding domain and catalytic domain are required for pexophagy and pathogenicity.
Nishii, Ichiro
- You have accessRestricted AccessControlled Enlargement of the Glycoprotein Vesicle Surrounding a Volvox Embryo Requires the InvB Nucleotide-Sugar Transporter and Is Required for Normal MorphogenesisNoriko Ueki, Ichiro NishiiPlant Cell Apr 2009, 21 (4) 1166-1181; DOI: https://doi.org/10.1105/tpc.109.066159
Volvox embryos undergo a morphogenetic process called inversion, by which they turn from inside-out to right-side-out. The authors characterize an InvB mutant that fails to invert. They show that InvB is a nucleotide-sugar transporter that is required during embryogenesis for enlarging the vesicle that surrounds the embryo to make room for the embryo to invert.
Nishikubo, Nobuyuki
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
Noh, Bosl
- You have accessRestricted AccessThe RNA Binding Protein ELF9 Directly Reduces SUPPRESSOR OF OVEREXPRESSION OF CO1 Transcript Levels in Arabidopsis, Possibly via Nonsense-Mediated mRNA DecayHae-Ryong Song, Ju-Dong Song, Jung-Nam Cho, Richard M. Amasino, Bosl Noh, Yoo-Sun NohPlant Cell Apr 2009, 21 (4) 1195-1211; DOI: https://doi.org/10.1105/tpc.108.064774
This work shows that SOC1 transcripts are directly recognized and regulated by an RNA binding protein EARLY FLOWERING9 (ELF9). In addition, ELF9 regulates multiple transcripts that are the targets of nonsense-mediated mRNA decay (NMD). Thus, ELF9 might be an RNA binding component of the Arabidopsis NMD system.
Noh, Yoo-Sun
- You have accessRestricted AccessThe RNA Binding Protein ELF9 Directly Reduces SUPPRESSOR OF OVEREXPRESSION OF CO1 Transcript Levels in Arabidopsis, Possibly via Nonsense-Mediated mRNA DecayHae-Ryong Song, Ju-Dong Song, Jung-Nam Cho, Richard M. Amasino, Bosl Noh, Yoo-Sun NohPlant Cell Apr 2009, 21 (4) 1195-1211; DOI: https://doi.org/10.1105/tpc.108.064774
This work shows that SOC1 transcripts are directly recognized and regulated by an RNA binding protein EARLY FLOWERING9 (ELF9). In addition, ELF9 regulates multiple transcripts that are the targets of nonsense-mediated mRNA decay (NMD). Thus, ELF9 might be an RNA binding component of the Arabidopsis NMD system.
O
Odahara, Masaki
- You have accessRestricted AccessSuppression of Repeat-Mediated Gross Mitochondrial Genome Rearrangements by RecA in the Moss Physcomitrella patensMasaki Odahara, Haruko Kuroiwa, Tsuneyoshi Kuroiwa, Yasuhiko SekinePlant Cell Apr 2009, 21 (4) 1182-1194; DOI: https://doi.org/10.1105/tpc.108.064709
This work studies the role of a homolog of bacterial recombinase RecA in the dynamics of the plant mitochondrial genome. The analysis of mitochondrial recA disruptants shows that RecA does not promote but rather suppresses recombination among short repeated sequences scattered throughout the mitochondrial genome, thereby maintaining mitochondrial genome stability.
Oikawa, Tetsuo
- You have accessRestricted AccessTwo-Step Regulation of LAX PANICLE1 Protein Accumulation in Axillary Meristem Formation in RiceTetsuo Oikawa, Junko KyozukaPlant Cell Apr 2009, 21 (4) 1095-1108; DOI: https://doi.org/10.1105/tpc.108.065425
The first step of shoot branching is production of axillary meristems (AMs) that are formed in the axils of leaves. Rice LAX PANICLE1 (LAX1) is required for AM formation through the plant's life. Here, we show that LAX1 protein, produced in the boundary between the subtending leaf and the future AM, moves toward the growing AM to establish a new AM.
Oku, Masahide
- You have accessRestricted AccessAtg26-Mediated Pexophagy Is Required for Host Invasion by the Plant Pathogenic Fungus Colletotrichum orbiculareMakoto Asakura, Sachiko Ninomiya, Miki Sugimoto, Masahide Oku, Shun-ichi Yamashita, Tetsuro Okuno, Yasuyoshi Sakai, Yoshitaka TakanoPlant Cell Apr 2009, 21 (4) 1291-1304; DOI: https://doi.org/10.1105/tpc.108.060996
For plant infection, the cucumber anthracnose fungus requires Atg26, a glucosyl transferase involved in pexophagy, the selective degradation of peroxisomes. Appressoria of an atg26 mutant fail to develop invasion hyphae and show defective pexophagy. Domain analysis of Atg26 suggests that both its phosphoinositide binding domain and catalytic domain are required for pexophagy and pathogenicity.
Okuno, Tetsuro
- You have accessRestricted AccessAtg26-Mediated Pexophagy Is Required for Host Invasion by the Plant Pathogenic Fungus Colletotrichum orbiculareMakoto Asakura, Sachiko Ninomiya, Miki Sugimoto, Masahide Oku, Shun-ichi Yamashita, Tetsuro Okuno, Yasuyoshi Sakai, Yoshitaka TakanoPlant Cell Apr 2009, 21 (4) 1291-1304; DOI: https://doi.org/10.1105/tpc.108.060996
For plant infection, the cucumber anthracnose fungus requires Atg26, a glucosyl transferase involved in pexophagy, the selective degradation of peroxisomes. Appressoria of an atg26 mutant fail to develop invasion hyphae and show defective pexophagy. Domain analysis of Atg26 suggests that both its phosphoinositide binding domain and catalytic domain are required for pexophagy and pathogenicity.
P
Pautot, Véronique
- You have accessRestricted AccessLeucine Aminopeptidase Regulates Defense and Wound Signaling in Tomato Downstream of Jasmonic AcidJonathan H. Fowler, Javier Narváez-Vásquez, Dale N. Aromdee, Véronique Pautot, Frances M. Holzer, Linda L. WallingPlant Cell Apr 2009, 21 (4) 1239-1251; DOI: https://doi.org/10.1105/tpc.108.065029
This work examines the role of the late wound-response gene Leucine aminopeptidase A (LapA) in herbivory and wound-induced gene expression. Examination of silenced and overexpressing lines indicates that LAP-A promotes defense responses downstream of jasmonic acid.
Peng, Zhiyu
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
Pesquet, Edouard
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
Powers, Stephen J.
- You have accessRestricted AccessReal-Time Quantitative RT-PCR: Design, Calculations, and StatisticsIvo Rieu, Stephen J. PowersPlant Cell Apr 2009, 21 (4) 1031-1033; DOI: https://doi.org/10.1105/tpc.109.066001
Provart, Nicholas J.
- You have accessRestricted AccessWeb-Queryable Large-Scale Data Sets for Hypothesis Generation in Plant BiologySiobhan M. Brady, Nicholas J. ProvartPlant Cell Apr 2009, 21 (4) 1034-1051; DOI: https://doi.org/10.1105/tpc.109.066050
Q
Qi, Yijun
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
R
Reina-Pinto, José J.
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
Rieu, Ivo
- You have accessRestricted AccessReal-Time Quantitative RT-PCR: Design, Calculations, and StatisticsIvo Rieu, Stephen J. PowersPlant Cell Apr 2009, 21 (4) 1031-1033; DOI: https://doi.org/10.1105/tpc.109.066001
Roden, Julie Anne
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Rolland, Aurélia
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
Rose, Jocelyn K.C.
- Open AccessArabidopsis LTPG Is a Glycosylphosphatidylinositol-Anchored Lipid Transfer Protein Required for Export of Lipids to the Plant SurfaceAllan DeBono, Trevor H. Yeats, Jocelyn K.C. Rose, David Bird, Reinhard Jetter, Ljerka Kunst, Lacey SamuelsPlant Cell Apr 2009, 21 (4) 1230-1238; DOI: https://doi.org/10.1105/tpc.108.064451
It has long been hypothesized that extracellular transfer of lipids across the epidermal cell wall to the waxy cuticle would require lipid transfer proteins (LTPs). An LTP with a GPI-anchor, LTPG, is required for export of wax to the cuticle in the stems of Arabidopsis. LTPG is primarily localized to the plasma membrane, and recombinant LTPG displays binding affinity for a lipophilic analog.
S
Sakai, Yasuyoshi
- You have accessRestricted AccessAtg26-Mediated Pexophagy Is Required for Host Invasion by the Plant Pathogenic Fungus Colletotrichum orbiculareMakoto Asakura, Sachiko Ninomiya, Miki Sugimoto, Masahide Oku, Shun-ichi Yamashita, Tetsuro Okuno, Yasuyoshi Sakai, Yoshitaka TakanoPlant Cell Apr 2009, 21 (4) 1291-1304; DOI: https://doi.org/10.1105/tpc.108.060996
For plant infection, the cucumber anthracnose fungus requires Atg26, a glucosyl transferase involved in pexophagy, the selective degradation of peroxisomes. Appressoria of an atg26 mutant fail to develop invasion hyphae and show defective pexophagy. Domain analysis of Atg26 suggests that both its phosphoinositide binding domain and catalytic domain are required for pexophagy and pathogenicity.
Samuels, Lacey
- Open AccessArabidopsis LTPG Is a Glycosylphosphatidylinositol-Anchored Lipid Transfer Protein Required for Export of Lipids to the Plant SurfaceAllan DeBono, Trevor H. Yeats, Jocelyn K.C. Rose, David Bird, Reinhard Jetter, Ljerka Kunst, Lacey SamuelsPlant Cell Apr 2009, 21 (4) 1230-1238; DOI: https://doi.org/10.1105/tpc.108.064451
It has long been hypothesized that extracellular transfer of lipids across the epidermal cell wall to the waxy cuticle would require lipid transfer proteins (LTPs). An LTP with a GPI-anchor, LTPG, is required for export of wax to the cuticle in the stems of Arabidopsis. LTPG is primarily localized to the plasma membrane, and recombinant LTPG displays binding affinity for a lipophilic analog.
Sato, Mayuko
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
Saunders, Nigel J.
- Open AccessGLK Transcription Factors Coordinate Expression of the Photosynthetic Apparatus in ArabidopsisMark T. Waters, Peng Wang, Muris Korkaric, Richard G. Capper, Nigel J. Saunders, Jane A. LangdalePlant Cell Apr 2009, 21 (4) 1109-1128; DOI: https://doi.org/10.1105/tpc.108.065250
GOLDEN2-LIKE (GLK) transcription factors are required for normal chloroplast development in several land plants. This study shows that GLK proteins synchronously upregulate genes relating to light harvesting and chlorophyll biosynthesis via direct interaction with promoter sequences. GLK activity most likely optimizes photosynthesis by coordinating responses to variable environmental conditions.
Scheres, Ben
- You have accessRestricted AccessMembers of the GCN5 Histone Acetyltransferase Complex Regulate PLETHORA-Mediated Root Stem Cell Niche Maintenance and Transit Amplifying Cell Proliferation in ArabidopsisNoortje Kornet, Ben ScheresPlant Cell Apr 2009, 21 (4) 1070-1079; DOI: https://doi.org/10.1105/tpc.108.065300
The Arabidopsis GCN5 histone acetyltransferase complex attenuates the recently discovered gradient expression of the PLETHORA genes and thereby regulates root stem cell niche maintenance and proliferation. Therefore, chromatin modifications play an important role in stem cell maintenance and in shaping a developmentally instructive gradient in the root.
Schiefelbein, John
- You have accessRestricted AccessThe MYB23 Gene Provides a Positive Feedback Loop for Cell Fate Specification in the Arabidopsis Root EpidermisYeon Hee Kang, Victor Kirik, Martin Hulskamp, Kyoung Hee Nam, Katherine Hagely, Myeong Min Lee, John SchiefelbeinPlant Cell Apr 2009, 21 (4) 1080-1094; DOI: https://doi.org/10.1105/tpc.108.063180
The precise specification of distinct cell fates during development requires accurate regulatory mechanisms. This work shows that MYB23 provides a positive transcriptional feedback loop for cell fate specification in the Arabidopsis root epidermis, and together with the previously identified lateral inhibition mechanism, ensures robust establishment of the cell type pattern.
Schreiber, Lukas
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
Schumacher, Karin
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
Sekine, Yasuhiko
- You have accessRestricted AccessSuppression of Repeat-Mediated Gross Mitochondrial Genome Rearrangements by RecA in the Moss Physcomitrella patensMasaki Odahara, Haruko Kuroiwa, Tsuneyoshi Kuroiwa, Yasuhiko SekinePlant Cell Apr 2009, 21 (4) 1182-1194; DOI: https://doi.org/10.1105/tpc.108.064709
This work studies the role of a homolog of bacterial recombinase RecA in the dynamics of the plant mitochondrial genome. The analysis of mitochondrial recA disruptants shows that RecA does not promote but rather suppresses recombination among short repeated sequences scattered throughout the mitochondrial genome, thereby maintaining mitochondrial genome stability.
Song, Hae-Ryong
- You have accessRestricted AccessThe RNA Binding Protein ELF9 Directly Reduces SUPPRESSOR OF OVEREXPRESSION OF CO1 Transcript Levels in Arabidopsis, Possibly via Nonsense-Mediated mRNA DecayHae-Ryong Song, Ju-Dong Song, Jung-Nam Cho, Richard M. Amasino, Bosl Noh, Yoo-Sun NohPlant Cell Apr 2009, 21 (4) 1195-1211; DOI: https://doi.org/10.1105/tpc.108.064774
This work shows that SOC1 transcripts are directly recognized and regulated by an RNA binding protein EARLY FLOWERING9 (ELF9). In addition, ELF9 regulates multiple transcripts that are the targets of nonsense-mediated mRNA decay (NMD). Thus, ELF9 might be an RNA binding component of the Arabidopsis NMD system.
Song, Ju-Dong
- You have accessRestricted AccessThe RNA Binding Protein ELF9 Directly Reduces SUPPRESSOR OF OVEREXPRESSION OF CO1 Transcript Levels in Arabidopsis, Possibly via Nonsense-Mediated mRNA DecayHae-Ryong Song, Ju-Dong Song, Jung-Nam Cho, Richard M. Amasino, Bosl Noh, Yoo-Sun NohPlant Cell Apr 2009, 21 (4) 1195-1211; DOI: https://doi.org/10.1105/tpc.108.064774
This work shows that SOC1 transcripts are directly recognized and regulated by an RNA binding protein EARLY FLOWERING9 (ELF9). In addition, ELF9 regulates multiple transcripts that are the targets of nonsense-mediated mRNA decay (NMD). Thus, ELF9 might be an RNA binding component of the Arabidopsis NMD system.
Stierhof, York-Dieter
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
Su, Bessie
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Sugimoto, Miki
- You have accessRestricted AccessAtg26-Mediated Pexophagy Is Required for Host Invasion by the Plant Pathogenic Fungus Colletotrichum orbiculareMakoto Asakura, Sachiko Ninomiya, Miki Sugimoto, Masahide Oku, Shun-ichi Yamashita, Tetsuro Okuno, Yasuyoshi Sakai, Yoshitaka TakanoPlant Cell Apr 2009, 21 (4) 1291-1304; DOI: https://doi.org/10.1105/tpc.108.060996
For plant infection, the cucumber anthracnose fungus requires Atg26, a glucosyl transferase involved in pexophagy, the selective degradation of peroxisomes. Appressoria of an atg26 mutant fail to develop invasion hyphae and show defective pexophagy. Domain analysis of Atg26 suggests that both its phosphoinositide binding domain and catalytic domain are required for pexophagy and pathogenicity.
Sun, Hui
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
T
Takano, Yoshitaka
- You have accessRestricted AccessAtg26-Mediated Pexophagy Is Required for Host Invasion by the Plant Pathogenic Fungus Colletotrichum orbiculareMakoto Asakura, Sachiko Ninomiya, Miki Sugimoto, Masahide Oku, Shun-ichi Yamashita, Tetsuro Okuno, Yasuyoshi Sakai, Yoshitaka TakanoPlant Cell Apr 2009, 21 (4) 1291-1304; DOI: https://doi.org/10.1105/tpc.108.060996
For plant infection, the cucumber anthracnose fungus requires Atg26, a glucosyl transferase involved in pexophagy, the selective degradation of peroxisomes. Appressoria of an atg26 mutant fail to develop invasion hyphae and show defective pexophagy. Domain analysis of Atg26 suggests that both its phosphoinositide binding domain and catalytic domain are required for pexophagy and pathogenicity.
Tashiro, Gen
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
Taylor, Kyle W.
- You have accessRestricted AccessXanthomonas T3S Effector XopN Suppresses PAMP-Triggered Immunity and Interacts with a Tomato Atypical Receptor-Like Kinase and TFT1Jung-Gun Kim, Xinyan Li, Julie Anne Roden, Kyle W. Taylor, Chris D. Aakre, Bessie Su, Sylvie Lalonde, Angela Kirik, Yanhui Chen, Gayathri Baranage, Heather McLane, Gregory B. Martin, Mary Beth MudgettPlant Cell Apr 2009, 21 (4) 1305-1323; DOI: https://doi.org/10.1105/tpc.108.063123
This work shows that the plant pathogen Xanthomonas campestris pathovar vesicatoria uses the XopN T3S effector protein to suppress tomato defense responses at the early stages of pathogen recognition. Biochemical studies indicate that XopN interacts specifically with a tomato atypical receptor kinase TARK1 that is partially required to limit bacterial multiplication in leaves.
Toyooka, Kiminori
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
- Open AccessA Mobile Secretory Vesicle Cluster Involved in Mass Transport from the Golgi to the Plant Cell ExteriorKiminori Toyooka, Yumi Goto, Satoru Asatsuma, Masato Koizumi, Toshiaki Mitsui, Ken MatsuokaPlant Cell Apr 2009, 21 (4) 1212-1229; DOI: https://doi.org/10.1105/tpc.108.058933
Analysis of post-Golgi transport machinery revealed a mobile structure of clustered secretory vesicles, termed the secretory vesicle cluster (SVC), which originates from the trans-Golgi network and fuses with plasma membrane or cell plate. The presence of secretory proteins and glycans suggested that SVC is involved in mass transport from the Golgi to the cell exterior.
U
Udagawa-Motose, Makiko
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
Ueki, Noriko
- You have accessRestricted AccessControlled Enlargement of the Glycoprotein Vesicle Surrounding a Volvox Embryo Requires the InvB Nucleotide-Sugar Transporter and Is Required for Normal MorphogenesisNoriko Ueki, Ichiro NishiiPlant Cell Apr 2009, 21 (4) 1166-1181; DOI: https://doi.org/10.1105/tpc.109.066159
Volvox embryos undergo a morphogenetic process called inversion, by which they turn from inside-out to right-side-out. The authors characterize an InvB mutant that fails to invert. They show that InvB is a nucleotide-sugar transporter that is required during embryogenesis for enlarging the vesicle that surrounds the embryo to make room for the embryo to invert.
V
Valent, Barbara
- Open AccessInteraction Transcriptome Analysis Identifies Magnaporthe oryzae BAS1-4 as Biotrophy-Associated Secreted Proteins in Rice Blast DiseaseGloria Mosquera, Martha C. Giraldo, Chang Hyun Khang, Sean Coughlan, Barbara ValentPlant Cell Apr 2009, 21 (4) 1273-1290; DOI: https://doi.org/10.1105/tpc.107.055228
The authors analyze host and pathogen gene expression after enrichment for biotrophic invasive hyphae (IH) of Magnaporthe oryzae growing in the first-invaded rice cells. IH express genes encoding biotrophy-associated secreted proteins, some of which accumulate in blast biotrophic interfacial complexes in compatible interactions, resemble known avirulence effectors.
Vernhettes, Samantha
- You have accessRestricted AccessPausing of Golgi Bodies on Microtubules Regulates Secretion of Cellulose Synthase Complexes in ArabidopsisElizabeth Faris Crowell, Volker Bischoff, Thierry Desprez, Aurélia Rolland, York-Dieter Stierhof, Karin Schumacher, Martine Gonneau, Herman Höfte, Samantha VernhettesPlant Cell Apr 2009, 21 (4) 1141-1154; DOI: https://doi.org/10.1105/tpc.108.065334
Little is known about how cellulose synthases (CESAs) reach their site of activity at the plasma membrane. Here, intracellular trafficking of CESA3 was investigated using live-cell imaging and electron microscopy. CESA3 secretion is accompanied by pausing of Golgi bodies on microtubules, and CESA3 is internalized in compartments whose movement depends on cortical microtubule array dynamics.
Voisin, Derry
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
W
Walling, Linda L.
- You have accessRestricted AccessLeucine Aminopeptidase Regulates Defense and Wound Signaling in Tomato Downstream of Jasmonic AcidJonathan H. Fowler, Javier Narváez-Vásquez, Dale N. Aromdee, Véronique Pautot, Frances M. Holzer, Linda L. WallingPlant Cell Apr 2009, 21 (4) 1239-1251; DOI: https://doi.org/10.1105/tpc.108.065029
This work examines the role of the late wound-response gene Leucine aminopeptidase A (LapA) in herbivory and wound-induced gene expression. Examination of silenced and overexpressing lines indicates that LAP-A promotes defense responses downstream of jasmonic acid.
Wang, Peng
- Open AccessGLK Transcription Factors Coordinate Expression of the Photosynthetic Apparatus in ArabidopsisMark T. Waters, Peng Wang, Muris Korkaric, Richard G. Capper, Nigel J. Saunders, Jane A. LangdalePlant Cell Apr 2009, 21 (4) 1109-1128; DOI: https://doi.org/10.1105/tpc.108.065250
GOLDEN2-LIKE (GLK) transcription factors are required for normal chloroplast development in several land plants. This study shows that GLK proteins synchronously upregulate genes relating to light harvesting and chlorophyll biosynthesis via direct interaction with promoter sequences. GLK activity most likely optimizes photosynthesis by coordinating responses to variable environmental conditions.
Wang, Xiangfeng
- You have accessRestricted AccessGenome-Wide and Organ-Specific Landscapes of Epigenetic Modifications and Their Relationships to mRNA and Small RNA Transcriptomes in MaizeXiangfeng Wang, Axel A. Elling, Xueyong Li, Ning Li, Zhiyu Peng, Guangming He, Hui Sun, Yijun Qi, X. Shirley Liu, Xing Wang DengPlant Cell Apr 2009, 21 (4) 1053-1069; DOI: https://doi.org/10.1105/tpc.109.065714
This genome-wide survey shows that epigenetic patterns differ significantly between protein-coding genes and transposable elements in maize. It is found that activating histone modifications co-occur, but the repressive marks H3K27me3 and DNA methylation exclude each other. Evidence is provided that changing mop1 transcript levels might lead to a tissue-specific shift of small RNA populations.
Waters, Mark T.
- Open AccessGLK Transcription Factors Coordinate Expression of the Photosynthetic Apparatus in ArabidopsisMark T. Waters, Peng Wang, Muris Korkaric, Richard G. Capper, Nigel J. Saunders, Jane A. LangdalePlant Cell Apr 2009, 21 (4) 1109-1128; DOI: https://doi.org/10.1105/tpc.108.065250
GOLDEN2-LIKE (GLK) transcription factors are required for normal chloroplast development in several land plants. This study shows that GLK proteins synchronously upregulate genes relating to light harvesting and chlorophyll biosynthesis via direct interaction with promoter sequences. GLK activity most likely optimizes photosynthesis by coordinating responses to variable environmental conditions.
Y
Yamaguchi, Masatoshi
- You have accessRestricted AccessIdentifying New Components Participating in the Secondary Cell Wall Formation of Vessel Elements in Zinnia and ArabidopsisSatoshi Endo, Edouard Pesquet, Masatoshi Yamaguchi, Gen Tashiro, Mayuko Sato, Kiminori Toyooka, Nobuyuki Nishikubo, Makiko Udagawa-Motose, Minoru Kubo, Hiroo Fukuda, Taku DemuraPlant Cell Apr 2009, 21 (4) 1155-1165; DOI: https://doi.org/10.1105/tpc.108.059154
This study uses an RNAi screen in Zinnia to identify two new components, Tracheary Element Differentiation-Related6 (TED6) and TED7, which contribute to cell wall biosynthesis during xylem vessel formation. The authors study TED6 and TED7 functions and interactions in Arabidopsis plants and Zinnia cultured cells.
Yamashita, Shun-ichi
- You have accessRestricted AccessAtg26-Mediated Pexophagy Is Required for Host Invasion by the Plant Pathogenic Fungus Colletotrichum orbiculareMakoto Asakura, Sachiko Ninomiya, Miki Sugimoto, Masahide Oku, Shun-ichi Yamashita, Tetsuro Okuno, Yasuyoshi Sakai, Yoshitaka TakanoPlant Cell Apr 2009, 21 (4) 1291-1304; DOI: https://doi.org/10.1105/tpc.108.060996
For plant infection, the cucumber anthracnose fungus requires Atg26, a glucosyl transferase involved in pexophagy, the selective degradation of peroxisomes. Appressoria of an atg26 mutant fail to develop invasion hyphae and show defective pexophagy. Domain analysis of Atg26 suggests that both its phosphoinositide binding domain and catalytic domain are required for pexophagy and pathogenicity.
Yeats, Trevor H.
- Open AccessArabidopsis LTPG Is a Glycosylphosphatidylinositol-Anchored Lipid Transfer Protein Required for Export of Lipids to the Plant SurfaceAllan DeBono, Trevor H. Yeats, Jocelyn K.C. Rose, David Bird, Reinhard Jetter, Ljerka Kunst, Lacey SamuelsPlant Cell Apr 2009, 21 (4) 1230-1238; DOI: https://doi.org/10.1105/tpc.108.064451
It has long been hypothesized that extracellular transfer of lipids across the epidermal cell wall to the waxy cuticle would require lipid transfer proteins (LTPs). An LTP with a GPI-anchor, LTPG, is required for export of wax to the cuticle in the stems of Arabidopsis. LTPG is primarily localized to the plasma membrane, and recombinant LTPG displays binding affinity for a lipophilic analog.
Yephremov, Alexander
- You have accessRestricted AccessMisexpression of FATTY ACID ELONGATION1 in the Arabidopsis Epidermis Induces Cell Death and Suggests a Critical Role for Phospholipase A2 in This ProcessJosé J. Reina-Pinto, Derry Voisin, Sergey Kurdyukov, Andrea Faust, Richard P. Haslam, Louise V. Michaelson, Nadia Efremova, Benni Franke, Lukas Schreiber, Johnathan A. Napier, Alexander YephremovPlant Cell Apr 2009, 21 (4) 1252-1272; DOI: https://doi.org/10.1105/tpc.109.065565
In this work, expression of a fatty acid elongase in the epidermis results in glabrous plants because newly initiated trichomes undergo rapid cell death. Chemical genetic screens identify cell death inhibitors that restore cell differentiation program.
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Zeng, C.J. Tracy
- You have accessRestricted AccessThe WD40 Repeat Protein NEDD1 Functions in Microtubule Organization during Cell Division in Arabidopsis thalianaC.J. Tracy Zeng, Y.-R. Julie Lee, Bo LiuPlant Cell Apr 2009, 21 (4) 1129-1140; DOI: https://doi.org/10.1105/tpc.109.065953
Higher plant cells organize microtubules in the absence of a structurally defined microtubule-organizing center. This article reports that the WD40 repeat protein NEDD1 appears preferentially toward the minus ends of microtubules and plays a critical role in microtubule organization during cell division in Arabidopsis thaliana.