Table of Contents
A
Ané, Jean-Michel
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Asakura, Yukari
- You have accessRestricted AccessA CRM Domain Protein Functions Dually in Group I and Group II Intron Splicing in Land Plant ChloroplastsYukari Asakura, Alice BarkanPlant Cell Dec 2007, 19 (12) 3864-3875; DOI: https://doi.org/10.1105/tpc.107.055160
Group II introns are protein-dependent ribozymes prevalent in plant organelles. It is shown that the CRM RNA binding domain protein CFM2 acts with other CRM proteins to promote splicing of plastid group II introns and also aids group I intron splicing. This work expands the repertoire of RNA ligands known for CRM proteins and suggests an unanticipated complexity of chloroplast splicing mechanisms.
Asano, Kenji
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
Ashikari, Motoyuki
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
Aya, Koichiro
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
B
Barkan, Alice
- You have accessRestricted AccessA CRM Domain Protein Functions Dually in Group I and Group II Intron Splicing in Land Plant ChloroplastsYukari Asakura, Alice BarkanPlant Cell Dec 2007, 19 (12) 3864-3875; DOI: https://doi.org/10.1105/tpc.107.055160
Group II introns are protein-dependent ribozymes prevalent in plant organelles. It is shown that the CRM RNA binding domain protein CFM2 acts with other CRM proteins to promote splicing of plastid group II introns and also aids group I intron splicing. This work expands the repertoire of RNA ligands known for CRM proteins and suggests an unanticipated complexity of chloroplast splicing mechanisms.
Beeckman, Tom
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Benkova, Eva
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Bennett, Malcolm
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Betsuyaku, Shigeyuki
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
Bhat, Riyaz
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
Birchler, James A.
- You have accessRestricted AccessMinichromosome Analysis of Chromosome Pairing, Disjunction, and Sister Chromatid Cohesion in MaizeFangpu Han, Zhi Gao, Weichang Yu, James A. BirchlerPlant Cell Dec 2007, 19 (12) 3853-3863; DOI: https://doi.org/10.1105/tpc.107.055905
This study investigated fundamental properties of minichromosomes. It was found that below a certain threshold, minichromosome pairing in meiosis does not depend upon size, but all small chromosomes exhibit a lack of sister chromatid cohesion at anaphase I whether pairing occurs or not.
Bogusz, Didier
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Bozza, Christopher G.
- You have accessRestricted AccessNaughty Behavior of Maize Minichromosomes in MeiosisArnaud Ronceret, Christopher G. Bozza, Wojciech P. PawlowskiPlant Cell Dec 2007, 19 (12) 3835-3837; DOI: https://doi.org/10.1105/tpc.108.057968
C
Cagna, Giuseppe
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
Calvo, Vanessa
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Carpita, Nicholas C.
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Casimiro, Ilda
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Che, Ping
- Open AccessAn Endoplasmic Reticulum Stress Response in Arabidopsis Is Mediated by Proteolytic Processing and Nuclear Relocation of a Membrane-Associated Transcription Factor, bZIP28Jian-Xiang Liu, Renu Srivastava, Ping Che, Stephen H. HowellPlant Cell Dec 2007, 19 (12) 4111-4119; DOI: https://doi.org/10.1105/tpc.106.050021
This work identifies a membrane-associated bZIP transcription factor that serves as a sensor/transducer in the unfolded protein response in Arabidopsis. In response to endoplasmic reticulum (ER) stress, the transcriptional component of the sensor/transducer is activated and relocates from the ER to the nucleus, where it upregulates the expression of genes encoding ER folding proteins.
Chen, Letian
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
Chhun, Tory
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
Cho, Hyung-Taeg
- Open AccessP-Glycoprotein4 Displays Auxin Efflux Transporter–Like Action in Arabidopsis Root Hair Cells and Tobacco CellsMisuk Cho, Sang Ho Lee, Hyung-Taeg ChoPlant Cell Dec 2007, 19 (12) 3930-3943; DOI: https://doi.org/10.1105/tpc.107.054288
The Arabidopsis ABC membrane transporter P-glycoprotein4 (PGP4) exhibits auxin influx transporter activity in vitro in yeast and animal cells. Taking advantage of the auxin-sensitive Arabidopsis root hair and tobacco cell suspension systems, this study indicates that PGP4 functions as an auxin efflux transporter in plant cells and that its membrane trafficking can be modulated by auxin.
Cho, Misuk
- Open AccessP-Glycoprotein4 Displays Auxin Efflux Transporter–Like Action in Arabidopsis Root Hair Cells and Tobacco CellsMisuk Cho, Sang Ho Lee, Hyung-Taeg ChoPlant Cell Dec 2007, 19 (12) 3930-3943; DOI: https://doi.org/10.1105/tpc.107.054288
The Arabidopsis ABC membrane transporter P-glycoprotein4 (PGP4) exhibits auxin influx transporter activity in vitro in yeast and animal cells. Taking advantage of the auxin-sensitive Arabidopsis root hair and tobacco cell suspension systems, this study indicates that PGP4 functions as an auxin efflux transporter in plant cells and that its membrane trafficking can be modulated by auxin.
Colby, Thomas
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
D
Dean, Gillian H.
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Delledonne, Massimo
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
DeMarco, Stephanie M.
- Open AccessPlastid Signals Remodel Light Signaling Networks and Are Essential for Efficient Chloroplast Biogenesis in ArabidopsisMichael E. Ruckle, Stephanie M. DeMarco, Robert M. LarkinPlant Cell Dec 2007, 19 (12) 3944-3960; DOI: https://doi.org/10.1105/tpc.107.054312
This report provides evidence for a plastid signal that allows plants to integrate signals describing the functional and developmental state of plastids with signals describing particular light environments to regulate the expression of nuclear genes encoding proteins active in photosynthesis and chloroplast biogenesis.
Deruère, Jean
- You have accessRestricted AccessCytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component PhosphorelayJennifer P.C. To, Jean Deruère, Bridey B. Maxwell, Veronica F. Morris, Claire E. Hutchison, Fernando J. Ferreira, G. Eric Schaller, Joseph J. KieberPlant Cell Dec 2007, 19 (12) 3901-3914; DOI: https://doi.org/10.1105/tpc.107.052662
This work shows that phosphorylation of the receiver domain is required for type-A ARR function, and negative regulation of cytokinin signaling by type-A ARRs most likely involves phosphorylation-dependent interactions. The results shed light on the mechanism by which type-A ARRs negatively regulate cytokinin signaling and reveal a novel mechanism by which cytokinin controls type-A ARR function.
Dietz, Karl-Josef
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Doumas, Patrick
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
E
Eckardt, Nancy A.
- You have accessRestricted AccessChloroplast Intron Splicing MechanismsNancy A. EckardtPlant Cell Dec 2007, 19 (12) 3838; DOI: https://doi.org/10.1105/tpc.108.191210
- You have accessRestricted AccessSystemic Acquired Acclimation to High LightNancy A. EckardtPlant Cell Dec 2007, 19 (12) 3838; DOI: https://doi.org/10.1105/tpc.108.191211
Endre, Gabriella
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Estelle, Mark
- You have accessRestricted AccessThe JAZ Proteins Link Jasmonate Perception with Transcriptional ChangesAaron Santner, Mark EstellePlant Cell Dec 2007, 19 (12) 3839-3842; DOI: https://doi.org/10.1105/tpc.107.056960
F
Ferreira, Fernando J.
- You have accessRestricted AccessCytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component PhosphorelayJennifer P.C. To, Jean Deruère, Bridey B. Maxwell, Veronica F. Morris, Claire E. Hutchison, Fernando J. Ferreira, G. Eric Schaller, Joseph J. KieberPlant Cell Dec 2007, 19 (12) 3901-3914; DOI: https://doi.org/10.1105/tpc.107.052662
This work shows that phosphorylation of the receiver domain is required for type-A ARR function, and negative regulation of cytokinin signaling by type-A ARRs most likely involves phosphorylation-dependent interactions. The results shed light on the mechanism by which type-A ARRs negatively regulate cytokinin signaling and reveal a novel mechanism by which cytokinin controls type-A ARR function.
Finkemeier, Iris
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Friml, Jiri
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
G
Gao, Zhi
- You have accessRestricted AccessMinichromosome Analysis of Chromosome Pairing, Disjunction, and Sister Chromatid Cohesion in MaizeFangpu Han, Zhi Gao, Weichang Yu, James A. BirchlerPlant Cell Dec 2007, 19 (12) 3853-3863; DOI: https://doi.org/10.1105/tpc.107.055905
This study investigated fundamental properties of minichromosomes. It was found that below a certain threshold, minichromosome pairing in meiosis does not depend upon size, but all small chromosomes exhibit a lack of sister chromatid cohesion at anaphase I whether pairing occurs or not.
Gordon, Matthew J.
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Graham, Neil
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
H
Han, Fangpu
- You have accessRestricted AccessMinichromosome Analysis of Chromosome Pairing, Disjunction, and Sister Chromatid Cohesion in MaizeFangpu Han, Zhi Gao, Weichang Yu, James A. BirchlerPlant Cell Dec 2007, 19 (12) 3853-3863; DOI: https://doi.org/10.1105/tpc.107.055905
This study investigated fundamental properties of minichromosomes. It was found that below a certain threshold, minichromosome pairing in meiosis does not depend upon size, but all small chromosomes exhibit a lack of sister chromatid cohesion at anaphase I whether pairing occurs or not.
Hara, Shin-ichiro
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
Hasegawa, Kana
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Haughn, George W.
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Hayashi, Kokoro
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Herrera-Rodriguez, Maria Begoña
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Horváth, Gábor V.
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Howell, Katharine A.
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Howell, Stephen H.
- Open AccessAn Endoplasmic Reticulum Stress Response in Arabidopsis Is Mediated by Proteolytic Processing and Nuclear Relocation of a Membrane-Associated Transcription Factor, bZIP28Jian-Xiang Liu, Renu Srivastava, Ping Che, Stephen H. HowellPlant Cell Dec 2007, 19 (12) 4111-4119; DOI: https://doi.org/10.1105/tpc.106.050021
This work identifies a membrane-associated bZIP transcription factor that serves as a sensor/transducer in the unfolded protein response in Arabidopsis. In response to endoplasmic reticulum (ER) stress, the transcriptional component of the sensor/transducer is activated and relocates from the ER to the nucleus, where it upregulates the expression of genes encoding ER folding proteins.
Huang, Jun
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Hussain, Dawar
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Hutchison, Claire E.
- You have accessRestricted AccessCytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component PhosphorelayJennifer P.C. To, Jean Deruère, Bridey B. Maxwell, Veronica F. Morris, Claire E. Hutchison, Fernando J. Ferreira, G. Eric Schaller, Joseph J. KieberPlant Cell Dec 2007, 19 (12) 3901-3914; DOI: https://doi.org/10.1105/tpc.107.052662
This work shows that phosphorylation of the receiver domain is required for type-A ARR function, and negative regulation of cytokinin signaling by type-A ARRs most likely involves phosphorylation-dependent interactions. The results shed light on the mechanism by which type-A ARRs negatively regulate cytokinin signaling and reveal a novel mechanism by which cytokinin controls type-A ARR function.
Hwang, Yeen Ting
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
I
Iba, Koh
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Isogai, Akira
- You have accessRestricted AccessTwo Distinct Forms of M-Locus Protein Kinase Localize to the Plasma Membrane and Interact Directly with S-Locus Receptor Kinase to Transduce Self-Incompatibility Signaling in Brassica rapaMitsuru Kakita, Kohji Murase, Megumi Iwano, Tomohito Matsumoto, Masao Watanabe, Hiroshi Shiba, Akira Isogai, Seiji TakayamaPlant Cell Dec 2007, 19 (12) 3961-3973; DOI: https://doi.org/10.1105/tpc.106.049999
The M-locus protein kinase (MLPK) is a cytoplasmic protein kinase essential for self-incompatibility (SI) signaling in Brassica. This work shows that MLPK has two isoforms that localize to the plasma membrane by different molecular mechanisms. Further analyses suggest that these MLPK isoforms interact directly with the S-locus receptor kinase on the plasma membrane to transduce SI signaling.
Iwano, Megumi
- You have accessRestricted AccessTwo Distinct Forms of M-Locus Protein Kinase Localize to the Plasma Membrane and Interact Directly with S-Locus Receptor Kinase to Transduce Self-Incompatibility Signaling in Brassica rapaMitsuru Kakita, Kohji Murase, Megumi Iwano, Tomohito Matsumoto, Masao Watanabe, Hiroshi Shiba, Akira Isogai, Seiji TakayamaPlant Cell Dec 2007, 19 (12) 3961-3973; DOI: https://doi.org/10.1105/tpc.106.049999
The M-locus protein kinase (MLPK) is a cytoplasmic protein kinase essential for self-incompatibility (SI) signaling in Brassica. This work shows that MLPK has two isoforms that localize to the plasma membrane by different molecular mechanisms. Further analyses suggest that these MLPK isoforms interact directly with the S-locus receptor kinase on the plasma membrane to transduce SI signaling.
J
Jayaraman, Dhileepkumar
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Jones, Alex M.E.
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Jones, Jonathan D.G.
- You have accessRestricted AccessThe Downy Mildew Effector Proteins ATR1 and ATR13 Promote Disease Susceptibility in Arabidopsis thalianaKee Hoon Sohn, Rita Lei, Adnane Nemri, Jonathan D.G. JonesPlant Cell Dec 2007, 19 (12) 4077-4090; DOI: https://doi.org/10.1105/tpc.107.054262
Plant pathogens secrete into host cell effector proteins that suppress plant immunity. This work reports the development of a system to engineer and deliver Hyaloperonospora parasitica effectors to plant cells via a bacterial secretion system. Using this system, multiple alleles of two H. parasitica effectors are found to confer resistance or enhance susceptibility of Arabidopsis accessions to this pathogen.
K
Kakita, Mitsuru
- You have accessRestricted AccessTwo Distinct Forms of M-Locus Protein Kinase Localize to the Plasma Membrane and Interact Directly with S-Locus Receptor Kinase to Transduce Self-Incompatibility Signaling in Brassica rapaMitsuru Kakita, Kohji Murase, Megumi Iwano, Tomohito Matsumoto, Masao Watanabe, Hiroshi Shiba, Akira Isogai, Seiji TakayamaPlant Cell Dec 2007, 19 (12) 3961-3973; DOI: https://doi.org/10.1105/tpc.106.049999
The M-locus protein kinase (MLPK) is a cytoplasmic protein kinase essential for self-incompatibility (SI) signaling in Brassica. This work shows that MLPK has two isoforms that localize to the plasma membrane by different molecular mechanisms. Further analyses suggest that these MLPK isoforms interact directly with the S-locus receptor kinase on the plasma membrane to transduce SI signaling.
Katagiri, Fumiaki
- You have accessRestricted AccessNatural Variation in RPS2-Mediated Resistance among Arabidopsis Accessions: Correlation between Gene Expression Profiles and Phenotypic ResponsesRemco M.P. Van Poecke, Masanao Sato, Lisa Lenarz-Wyatt, Sanford Weisberg, Fumiaki KatagiriPlant Cell Dec 2007, 19 (12) 4046-4060; DOI: https://doi.org/10.1105/tpc.107.053827
An analysis of Arabidopsis accessions differing in resistance to Pseudomonas syringae pv tomato containing the avrRpt2 effector gene shows that natural variation in induced gene expression profiles is correlated with natural variation in phenotypic responses, such as the hypersensitive response and resistance.
Kawasaki, Tsutomu
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
Kazan, Kemal
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Kereszt, Attila
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Kevei, Zoltán
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Khanna, Rajnish
- You have accessRestricted AccessThe Basic Helix-Loop-Helix Transcription Factor PIF5 Acts on Ethylene Biosynthesis and Phytochrome Signaling by Distinct MechanismsRajnish Khanna, Yu Shen, Colleen M. Marion, Atsunari Tsuchisaka, Athanasios Theologis, Eberhard Schäfer, Peter H. QuailPlant Cell Dec 2007, 19 (12) 3915-3929; DOI: https://doi.org/10.1105/tpc.107.051508
PIF5 is a phyB-interacting factor that inhibits growth in the dark, when expressed at abnormally high levels, by increasing ethylene production, and regulates growth in the light by modulating phyB levels via a negative feedback loop that induces phyB degradation.
Kieber, Joseph J.
- You have accessRestricted AccessCytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component PhosphorelayJennifer P.C. To, Jean Deruère, Bridey B. Maxwell, Veronica F. Morris, Claire E. Hutchison, Fernando J. Ferreira, G. Eric Schaller, Joseph J. KieberPlant Cell Dec 2007, 19 (12) 3901-3914; DOI: https://doi.org/10.1105/tpc.107.052662
This work shows that phosphorylation of the receiver domain is required for type-A ARR function, and negative regulation of cytokinin signaling by type-A ARRs most likely involves phosphorylation-dependent interactions. The results shed light on the mechanism by which type-A ARRs negatively regulate cytokinin signaling and reveal a novel mechanism by which cytokinin controls type-A ARR function.
Kiss, György B.
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Kitano, Hidemi
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
Kojima, Chojiro
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Kondorosi, Adam
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Kondorosi, Eva
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Kronenberger, Jocelyne
- You have accessRestricted AccessA Naturally Occurring Mutation in an Arabidopsis Accession Affects a β-d-Galactosidase That Increases the Hydrophilic Potential of Rhamnogalacturonan I in Seed MucilageAudrey Macquet, Marie-Christine Ralet, Olivier Loudet, Jocelyne Kronenberger, Gregory Mouille, Annie Marion-Poll, Helen M. NorthPlant Cell Dec 2007, 19 (12) 3990-4006; DOI: https://doi.org/10.1105/tpc.107.050179
This work demonstrates that the Shahdara accession is a naturally occurring mutant affected in the MUM2 gene. The β-d-galactosidase enzyme it encodes was shown to be required for the removal of galactose/galactan branches from the major polysaccharide constituting Arabidopsis mucilage, rhamnogalacturonan I, thus altering its physicochemical properties and increasing hydrated mucilage swelling.
L
Laplaze, Laurent
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Larkin, Robert M.
- Open AccessPlastid Signals Remodel Light Signaling Networks and Are Essential for Efficient Chloroplast Biogenesis in ArabidopsisMichael E. Ruckle, Stephanie M. DeMarco, Robert M. LarkinPlant Cell Dec 2007, 19 (12) 3944-3960; DOI: https://doi.org/10.1105/tpc.107.054312
This report provides evidence for a plastid signal that allows plants to integrate signals describing the functional and developmental state of plastids with signals describing particular light environments to regulate the expression of nuclear genes encoding proteins active in photosynthesis and chloroplast biogenesis.
Laxa, Miriam
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Lee, Sang Ho
- Open AccessP-Glycoprotein4 Displays Auxin Efflux Transporter–Like Action in Arabidopsis Root Hair Cells and Tobacco CellsMisuk Cho, Sang Ho Lee, Hyung-Taeg ChoPlant Cell Dec 2007, 19 (12) 3930-3943; DOI: https://doi.org/10.1105/tpc.107.054288
The Arabidopsis ABC membrane transporter P-glycoprotein4 (PGP4) exhibits auxin influx transporter activity in vitro in yeast and animal cells. Taking advantage of the auxin-sensitive Arabidopsis root hair and tobacco cell suspension systems, this study indicates that PGP4 functions as an auxin efflux transporter in plant cells and that its membrane trafficking can be modulated by auxin.
Lei, Rita
- You have accessRestricted AccessThe Downy Mildew Effector Proteins ATR1 and ATR13 Promote Disease Susceptibility in Arabidopsis thalianaKee Hoon Sohn, Rita Lei, Adnane Nemri, Jonathan D.G. JonesPlant Cell Dec 2007, 19 (12) 4077-4090; DOI: https://doi.org/10.1105/tpc.107.054262
Plant pathogens secrete into host cell effector proteins that suppress plant immunity. This work reports the development of a system to engineer and deliver Hyaloperonospora parasitica effectors to plant cells via a bacterial secretion system. Using this system, multiple alleles of two H. parasitica effectors are found to confer resistance or enhance susceptibility of Arabidopsis accessions to this pathogen.
Lenarz-Wyatt, Lisa
- You have accessRestricted AccessNatural Variation in RPS2-Mediated Resistance among Arabidopsis Accessions: Correlation between Gene Expression Profiles and Phenotypic ResponsesRemco M.P. Van Poecke, Masanao Sato, Lisa Lenarz-Wyatt, Sanford Weisberg, Fumiaki KatagiriPlant Cell Dec 2007, 19 (12) 4046-4060; DOI: https://doi.org/10.1105/tpc.107.053827
An analysis of Arabidopsis accessions differing in resistance to Pseudomonas syringae pv tomato containing the avrRpt2 effector gene shows that natural variation in induced gene expression profiles is correlated with natural variation in phenotypic responses, such as the hypersensitive response and resistance.
Liu, Jian-Xiang
- Open AccessAn Endoplasmic Reticulum Stress Response in Arabidopsis Is Mediated by Proteolytic Processing and Nuclear Relocation of a Membrane-Associated Transcription Factor, bZIP28Jian-Xiang Liu, Renu Srivastava, Ping Che, Stephen H. HowellPlant Cell Dec 2007, 19 (12) 4111-4119; DOI: https://doi.org/10.1105/tpc.106.050021
This work identifies a membrane-associated bZIP transcription factor that serves as a sensor/transducer in the unfolded protein response in Arabidopsis. In response to endoplasmic reticulum (ER) stress, the transcriptional component of the sensor/transducer is activated and relocates from the ER to the nucleus, where it upregulates the expression of genes encoding ER folding proteins.
Loudet, Olivier
- You have accessRestricted AccessA Naturally Occurring Mutation in an Arabidopsis Accession Affects a β-d-Galactosidase That Increases the Hydrophilic Potential of Rhamnogalacturonan I in Seed MucilageAudrey Macquet, Marie-Christine Ralet, Olivier Loudet, Jocelyne Kronenberger, Gregory Mouille, Annie Marion-Poll, Helen M. NorthPlant Cell Dec 2007, 19 (12) 3990-4006; DOI: https://doi.org/10.1105/tpc.107.050179
This work demonstrates that the Shahdara accession is a naturally occurring mutant affected in the MUM2 gene. The β-d-galactosidase enzyme it encodes was shown to be required for the removal of galactose/galactan branches from the major polysaccharide constituting Arabidopsis mucilage, rhamnogalacturonan I, thus altering its physicochemical properties and increasing hydrated mucilage swelling.
Lougnon, Géraldine
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
M
Macquet, Audrey
- You have accessRestricted AccessA Naturally Occurring Mutation in an Arabidopsis Accession Affects a β-d-Galactosidase That Increases the Hydrophilic Potential of Rhamnogalacturonan I in Seed MucilageAudrey Macquet, Marie-Christine Ralet, Olivier Loudet, Jocelyne Kronenberger, Gregory Mouille, Annie Marion-Poll, Helen M. NorthPlant Cell Dec 2007, 19 (12) 3990-4006; DOI: https://doi.org/10.1105/tpc.107.050179
This work demonstrates that the Shahdara accession is a naturally occurring mutant affected in the MUM2 gene. The β-d-galactosidase enzyme it encodes was shown to be required for the removal of galactose/galactan branches from the major polysaccharide constituting Arabidopsis mucilage, rhamnogalacturonan I, thus altering its physicochemical properties and increasing hydrated mucilage swelling.
Maes, Lies
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Mansfield, Shawn D.
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Marcel, Fabian
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Marion, Colleen M.
- You have accessRestricted AccessThe Basic Helix-Loop-Helix Transcription Factor PIF5 Acts on Ethylene Biosynthesis and Phytochrome Signaling by Distinct MechanismsRajnish Khanna, Yu Shen, Colleen M. Marion, Atsunari Tsuchisaka, Athanasios Theologis, Eberhard Schäfer, Peter H. QuailPlant Cell Dec 2007, 19 (12) 3915-3929; DOI: https://doi.org/10.1105/tpc.107.051508
PIF5 is a phyB-interacting factor that inhibits growth in the dark, when expressed at abnormally high levels, by increasing ethylene production, and regulates growth in the light by modulating phyB levels via a negative feedback loop that induces phyB degradation.
Marion-Poll, Annie
- You have accessRestricted AccessA Naturally Occurring Mutation in an Arabidopsis Accession Affects a β-d-Galactosidase That Increases the Hydrophilic Potential of Rhamnogalacturonan I in Seed MucilageAudrey Macquet, Marie-Christine Ralet, Olivier Loudet, Jocelyne Kronenberger, Gregory Mouille, Annie Marion-Poll, Helen M. NorthPlant Cell Dec 2007, 19 (12) 3990-4006; DOI: https://doi.org/10.1105/tpc.107.050179
This work demonstrates that the Shahdara accession is a naturally occurring mutant affected in the MUM2 gene. The β-d-galactosidase enzyme it encodes was shown to be required for the removal of galactose/galactan branches from the major polysaccharide constituting Arabidopsis mucilage, rhamnogalacturonan I, thus altering its physicochemical properties and increasing hydrated mucilage swelling.
Matsumoto, Tomohito
- You have accessRestricted AccessTwo Distinct Forms of M-Locus Protein Kinase Localize to the Plasma Membrane and Interact Directly with S-Locus Receptor Kinase to Transduce Self-Incompatibility Signaling in Brassica rapaMitsuru Kakita, Kohji Murase, Megumi Iwano, Tomohito Matsumoto, Masao Watanabe, Hiroshi Shiba, Akira Isogai, Seiji TakayamaPlant Cell Dec 2007, 19 (12) 3961-3973; DOI: https://doi.org/10.1105/tpc.106.049999
The M-locus protein kinase (MLPK) is a cytoplasmic protein kinase essential for self-incompatibility (SI) signaling in Brassica. This work shows that MLPK has two isoforms that localize to the plasma membrane by different molecular mechanisms. Further analyses suggest that these MLPK isoforms interact directly with the S-locus receptor kinase on the plasma membrane to transduce SI signaling.
Matsuoka, Makoto
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
Mattè, Alessandro
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Maxwell, Bridey B.
- You have accessRestricted AccessCytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component PhosphorelayJennifer P.C. To, Jean Deruère, Bridey B. Maxwell, Veronica F. Morris, Claire E. Hutchison, Fernando J. Ferreira, G. Eric Schaller, Joseph J. KieberPlant Cell Dec 2007, 19 (12) 3901-3914; DOI: https://doi.org/10.1105/tpc.107.052662
This work shows that phosphorylation of the receiver domain is required for type-A ARR function, and negative regulation of cytokinin signaling by type-A ARRs most likely involves phosphorylation-dependent interactions. The results shed light on the mechanism by which type-A ARRs negatively regulate cytokinin signaling and reveal a novel mechanism by which cytokinin controls type-A ARR function.
McCann, Maureen C.
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Mergaert, Peter
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Mewett, Osman P.
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Morinaka, Yoichi
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
Morris, Veronica F.
- You have accessRestricted AccessCytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component PhosphorelayJennifer P.C. To, Jean Deruère, Bridey B. Maxwell, Veronica F. Morris, Claire E. Hutchison, Fernando J. Ferreira, G. Eric Schaller, Joseph J. KieberPlant Cell Dec 2007, 19 (12) 3901-3914; DOI: https://doi.org/10.1105/tpc.107.052662
This work shows that phosphorylation of the receiver domain is required for type-A ARR function, and negative regulation of cytokinin signaling by type-A ARRs most likely involves phosphorylation-dependent interactions. The results shed light on the mechanism by which type-A ARRs negatively regulate cytokinin signaling and reveal a novel mechanism by which cytokinin controls type-A ARR function.
Mouille, Gregory
- You have accessRestricted AccessA Naturally Occurring Mutation in an Arabidopsis Accession Affects a β-d-Galactosidase That Increases the Hydrophilic Potential of Rhamnogalacturonan I in Seed MucilageAudrey Macquet, Marie-Christine Ralet, Olivier Loudet, Jocelyne Kronenberger, Gregory Mouille, Annie Marion-Poll, Helen M. NorthPlant Cell Dec 2007, 19 (12) 3990-4006; DOI: https://doi.org/10.1105/tpc.107.050179
This work demonstrates that the Shahdara accession is a naturally occurring mutant affected in the MUM2 gene. The β-d-galactosidase enzyme it encodes was shown to be required for the removal of galactose/galactan branches from the major polysaccharide constituting Arabidopsis mucilage, rhamnogalacturonan I, thus altering its physicochemical properties and increasing hydrated mucilage swelling.
Murase, Kohji
- You have accessRestricted AccessTwo Distinct Forms of M-Locus Protein Kinase Localize to the Plasma Membrane and Interact Directly with S-Locus Receptor Kinase to Transduce Self-Incompatibility Signaling in Brassica rapaMitsuru Kakita, Kohji Murase, Megumi Iwano, Tomohito Matsumoto, Masao Watanabe, Hiroshi Shiba, Akira Isogai, Seiji TakayamaPlant Cell Dec 2007, 19 (12) 3961-3973; DOI: https://doi.org/10.1105/tpc.106.049999
The M-locus protein kinase (MLPK) is a cytoplasmic protein kinase essential for self-incompatibility (SI) signaling in Brassica. This work shows that MLPK has two isoforms that localize to the plasma membrane by different molecular mechanisms. Further analyses suggest that these MLPK isoforms interact directly with the S-locus receptor kinase on the plasma membrane to transduce SI signaling.
N
Nakashima, Ayako
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
Nemri, Adnane
- You have accessRestricted AccessThe Downy Mildew Effector Proteins ATR1 and ATR13 Promote Disease Susceptibility in Arabidopsis thalianaKee Hoon Sohn, Rita Lei, Adnane Nemri, Jonathan D.G. JonesPlant Cell Dec 2007, 19 (12) 4077-4090; DOI: https://doi.org/10.1105/tpc.107.054262
Plant pathogens secrete into host cell effector proteins that suppress plant immunity. This work reports the development of a system to engineer and deliver Hyaloperonospora parasitica effectors to plant cells via a bacterial secretion system. Using this system, multiple alleles of two H. parasitica effectors are found to confer resistance or enhance susceptibility of Arabidopsis accessions to this pathogen.
Noël, Laurent D.
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
North, Helen M.
- You have accessRestricted AccessA Naturally Occurring Mutation in an Arabidopsis Accession Affects a β-d-Galactosidase That Increases the Hydrophilic Potential of Rhamnogalacturonan I in Seed MucilageAudrey Macquet, Marie-Christine Ralet, Olivier Loudet, Jocelyne Kronenberger, Gregory Mouille, Annie Marion-Poll, Helen M. NorthPlant Cell Dec 2007, 19 (12) 3990-4006; DOI: https://doi.org/10.1105/tpc.107.050179
This work demonstrates that the Shahdara accession is a naturally occurring mutant affected in the MUM2 gene. The β-d-galactosidase enzyme it encodes was shown to be required for the removal of galactose/galactan branches from the major polysaccharide constituting Arabidopsis mucilage, rhamnogalacturonan I, thus altering its physicochemical properties and increasing hydrated mucilage swelling.
O
Offringa, Remko
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
P
Parizot, Boris
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Parker, Jane E.
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
Pawlowski, Wojciech P.
- You have accessRestricted AccessNaughty Behavior of Maize Minichromosomes in MeiosisArnaud Ronceret, Christopher G. Bozza, Wojciech P. PawlowskiPlant Cell Dec 2007, 19 (12) 3835-3837; DOI: https://doi.org/10.1105/tpc.108.057968
Perazzolli, Michele
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Pinontoan, Reinhard
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Pochon, Nathalie
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
Pogson, Barry J.
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Q
Quail, Peter H.
- You have accessRestricted AccessThe Basic Helix-Loop-Helix Transcription Factor PIF5 Acts on Ethylene Biosynthesis and Phytochrome Signaling by Distinct MechanismsRajnish Khanna, Yu Shen, Colleen M. Marion, Atsunari Tsuchisaka, Athanasios Theologis, Eberhard Schäfer, Peter H. QuailPlant Cell Dec 2007, 19 (12) 3915-3929; DOI: https://doi.org/10.1105/tpc.107.051508
PIF5 is a phyB-interacting factor that inhibits growth in the dark, when expressed at abnormally high levels, by increasing ethylene production, and regulates growth in the light by modulating phyB levels via a negative feedback loop that induces phyB degradation.
R
Ralet, Marie-Christine
- You have accessRestricted AccessA Naturally Occurring Mutation in an Arabidopsis Accession Affects a β-d-Galactosidase That Increases the Hydrophilic Potential of Rhamnogalacturonan I in Seed MucilageAudrey Macquet, Marie-Christine Ralet, Olivier Loudet, Jocelyne Kronenberger, Gregory Mouille, Annie Marion-Poll, Helen M. NorthPlant Cell Dec 2007, 19 (12) 3990-4006; DOI: https://doi.org/10.1105/tpc.107.050179
This work demonstrates that the Shahdara accession is a naturally occurring mutant affected in the MUM2 gene. The β-d-galactosidase enzyme it encodes was shown to be required for the removal of galactose/galactan branches from the major polysaccharide constituting Arabidopsis mucilage, rhamnogalacturonan I, thus altering its physicochemical properties and increasing hydrated mucilage swelling.
Regulski, Krzysztof
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Romero-Puertas, Maria C.
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Ronceret, Arnaud
- You have accessRestricted AccessNaughty Behavior of Maize Minichromosomes in MeiosisArnaud Ronceret, Christopher G. Bozza, Wojciech P. PawlowskiPlant Cell Dec 2007, 19 (12) 3835-3837; DOI: https://doi.org/10.1105/tpc.108.057968
Rossel, Jan Bart
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Ruckle, Michael E.
- Open AccessPlastid Signals Remodel Light Signaling Networks and Are Essential for Efficient Chloroplast Biogenesis in ArabidopsisMichael E. Ruckle, Stephanie M. DeMarco, Robert M. LarkinPlant Cell Dec 2007, 19 (12) 3944-3960; DOI: https://doi.org/10.1105/tpc.107.054312
This report provides evidence for a plastid signal that allows plants to integrate signals describing the functional and developmental state of plastids with signals describing particular light environments to regulate the expression of nuclear genes encoding proteins active in photosynthesis and chloroplast biogenesis.
S
Santner, Aaron
- You have accessRestricted AccessThe JAZ Proteins Link Jasmonate Perception with Transcriptional ChangesAaron Santner, Mark EstellePlant Cell Dec 2007, 19 (12) 3839-3842; DOI: https://doi.org/10.1105/tpc.107.056960
Sato, Masanao
- You have accessRestricted AccessNatural Variation in RPS2-Mediated Resistance among Arabidopsis Accessions: Correlation between Gene Expression Profiles and Phenotypic ResponsesRemco M.P. Van Poecke, Masanao Sato, Lisa Lenarz-Wyatt, Sanford Weisberg, Fumiaki KatagiriPlant Cell Dec 2007, 19 (12) 4046-4060; DOI: https://doi.org/10.1105/tpc.107.053827
An analysis of Arabidopsis accessions differing in resistance to Pseudomonas syringae pv tomato containing the avrRpt2 effector gene shows that natural variation in induced gene expression profiles is correlated with natural variation in phenotypic responses, such as the hypersensitive response and resistance.
Schäfer, Eberhard
- You have accessRestricted AccessThe Basic Helix-Loop-Helix Transcription Factor PIF5 Acts on Ethylene Biosynthesis and Phytochrome Signaling by Distinct MechanismsRajnish Khanna, Yu Shen, Colleen M. Marion, Atsunari Tsuchisaka, Athanasios Theologis, Eberhard Schäfer, Peter H. QuailPlant Cell Dec 2007, 19 (12) 3915-3929; DOI: https://doi.org/10.1105/tpc.107.051508
PIF5 is a phyB-interacting factor that inhibits growth in the dark, when expressed at abnormally high levels, by increasing ethylene production, and regulates growth in the light by modulating phyB levels via a negative feedback loop that induces phyB degradation.
Schaller, G. Eric
- You have accessRestricted AccessCytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component PhosphorelayJennifer P.C. To, Jean Deruère, Bridey B. Maxwell, Veronica F. Morris, Claire E. Hutchison, Fernando J. Ferreira, G. Eric Schaller, Joseph J. KieberPlant Cell Dec 2007, 19 (12) 3901-3914; DOI: https://doi.org/10.1105/tpc.107.052662
This work shows that phosphorylation of the receiver domain is required for type-A ARR function, and negative regulation of cytokinin signaling by type-A ARRs most likely involves phosphorylation-dependent interactions. The results shed light on the mechanism by which type-A ARRs negatively regulate cytokinin signaling and reveal a novel mechanism by which cytokinin controls type-A ARR function.
Shen, Yu
- You have accessRestricted AccessThe Basic Helix-Loop-Helix Transcription Factor PIF5 Acts on Ethylene Biosynthesis and Phytochrome Signaling by Distinct MechanismsRajnish Khanna, Yu Shen, Colleen M. Marion, Atsunari Tsuchisaka, Athanasios Theologis, Eberhard Schäfer, Peter H. QuailPlant Cell Dec 2007, 19 (12) 3915-3929; DOI: https://doi.org/10.1105/tpc.107.051508
PIF5 is a phyB-interacting factor that inhibits growth in the dark, when expressed at abnormally high levels, by increasing ethylene production, and regulates growth in the light by modulating phyB levels via a negative feedback loop that induces phyB degradation.
Shiba, Hiroshi
- You have accessRestricted AccessTwo Distinct Forms of M-Locus Protein Kinase Localize to the Plasma Membrane and Interact Directly with S-Locus Receptor Kinase to Transduce Self-Incompatibility Signaling in Brassica rapaMitsuru Kakita, Kohji Murase, Megumi Iwano, Tomohito Matsumoto, Masao Watanabe, Hiroshi Shiba, Akira Isogai, Seiji TakayamaPlant Cell Dec 2007, 19 (12) 3961-3973; DOI: https://doi.org/10.1105/tpc.106.049999
The M-locus protein kinase (MLPK) is a cytoplasmic protein kinase essential for self-incompatibility (SI) signaling in Brassica. This work shows that MLPK has two isoforms that localize to the plasma membrane by different molecular mechanisms. Further analyses suggest that these MLPK isoforms interact directly with the S-locus receptor kinase on the plasma membrane to transduce SI signaling.
Shimamoto, Ko
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
Shirasu, Ken
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
Sohn, Kee Hoon
- You have accessRestricted AccessThe Downy Mildew Effector Proteins ATR1 and ATR13 Promote Disease Susceptibility in Arabidopsis thalianaKee Hoon Sohn, Rita Lei, Adnane Nemri, Jonathan D.G. JonesPlant Cell Dec 2007, 19 (12) 4077-4090; DOI: https://doi.org/10.1105/tpc.107.054262
Plant pathogens secrete into host cell effector proteins that suppress plant immunity. This work reports the development of a system to engineer and deliver Hyaloperonospora parasitica effectors to plant cells via a bacterial secretion system. Using this system, multiple alleles of two H. parasitica effectors are found to confer resistance or enhance susceptibility of Arabidopsis accessions to this pathogen.
Srivastava, Renu
- Open AccessAn Endoplasmic Reticulum Stress Response in Arabidopsis Is Mediated by Proteolytic Processing and Nuclear Relocation of a Membrane-Associated Transcription Factor, bZIP28Jian-Xiang Liu, Renu Srivastava, Ping Che, Stephen H. HowellPlant Cell Dec 2007, 19 (12) 4111-4119; DOI: https://doi.org/10.1105/tpc.106.050021
This work identifies a membrane-associated bZIP transcription factor that serves as a sensor/transducer in the unfolded protein response in Arabidopsis. In response to endoplasmic reticulum (ER) stress, the transcriptional component of the sensor/transducer is activated and relocates from the ER to the nucleus, where it upregulates the expression of genes encoding ER folding proteins.
Stuttmann, Johannes
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
Swarup, Ranjan
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
T
Tabata, Ryo
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Takahashi, Akira
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
Takayama, Seiji
- You have accessRestricted AccessTwo Distinct Forms of M-Locus Protein Kinase Localize to the Plasma Membrane and Interact Directly with S-Locus Receptor Kinase to Transduce Self-Incompatibility Signaling in Brassica rapaMitsuru Kakita, Kohji Murase, Megumi Iwano, Tomohito Matsumoto, Masao Watanabe, Hiroshi Shiba, Akira Isogai, Seiji TakayamaPlant Cell Dec 2007, 19 (12) 3961-3973; DOI: https://doi.org/10.1105/tpc.106.049999
The M-locus protein kinase (MLPK) is a cytoplasmic protein kinase essential for self-incompatibility (SI) signaling in Brassica. This work shows that MLPK has two isoforms that localize to the plasma membrane by different molecular mechanisms. Further analyses suggest that these MLPK isoforms interact directly with the S-locus receptor kinase on the plasma membrane to transduce SI signaling.
Tewari, Jagdish
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Thao, Nguyen Phuong
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
Theologis, Athanasios
- You have accessRestricted AccessThe Basic Helix-Loop-Helix Transcription Factor PIF5 Acts on Ethylene Biosynthesis and Phytochrome Signaling by Distinct MechanismsRajnish Khanna, Yu Shen, Colleen M. Marion, Atsunari Tsuchisaka, Athanasios Theologis, Eberhard Schäfer, Peter H. QuailPlant Cell Dec 2007, 19 (12) 3915-3929; DOI: https://doi.org/10.1105/tpc.107.051508
PIF5 is a phyB-interacting factor that inhibits growth in the dark, when expressed at abnormally high levels, by increasing ethylene production, and regulates growth in the light by modulating phyB levels via a negative feedback loop that induces phyB degradation.
To, Jennifer P.C.
- You have accessRestricted AccessCytokinin Regulates Type-A Arabidopsis Response Regulator Activity and Protein Stability via Two-Component PhosphorelayJennifer P.C. To, Jean Deruère, Bridey B. Maxwell, Veronica F. Morris, Claire E. Hutchison, Fernando J. Ferreira, G. Eric Schaller, Joseph J. KieberPlant Cell Dec 2007, 19 (12) 3901-3914; DOI: https://doi.org/10.1105/tpc.107.052662
This work shows that phosphorylation of the receiver domain is required for type-A ARR function, and negative regulation of cytokinin signaling by type-A ARRs most likely involves phosphorylation-dependent interactions. The results shed light on the mechanism by which type-A ARRs negatively regulate cytokinin signaling and reveal a novel mechanism by which cytokinin controls type-A ARR function.
Tsuchisaka, Atsunari
- You have accessRestricted AccessThe Basic Helix-Loop-Helix Transcription Factor PIF5 Acts on Ethylene Biosynthesis and Phytochrome Signaling by Distinct MechanismsRajnish Khanna, Yu Shen, Colleen M. Marion, Atsunari Tsuchisaka, Athanasios Theologis, Eberhard Schäfer, Peter H. QuailPlant Cell Dec 2007, 19 (12) 3915-3929; DOI: https://doi.org/10.1105/tpc.107.051508
PIF5 is a phyB-interacting factor that inhibits growth in the dark, when expressed at abnormally high levels, by increasing ethylene production, and regulates growth in the light by modulating phyB levels via a negative feedback loop that induces phyB degradation.
U
Ueguchi-Tanaka, Miyako
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
Umemura, Kenji
- Open AccessRAR1 and HSP90 Form a Complex with Rac/Rop GTPase and Function in Innate-Immune Responses in RiceNguyen Phuong Thao, Letian Chen, Ayako Nakashima, Shin-ichiro Hara, Kenji Umemura, Akira Takahashi, Ken Shirasu, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4035-4045; DOI: https://doi.org/10.1105/tpc.107.055517
Rac/Rop GTPase plays an important role in innate immune responses in rice, but its molecular mechanism is not well understood. This study shows that it can form a complex with RAR1 and HSP90, which are conserved components of innate immunity responses in plants.
V
Vandelle, Elodie
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Vanneste, Steffen
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Van Poecke, Remco M.P.
- You have accessRestricted AccessNatural Variation in RPS2-Mediated Resistance among Arabidopsis Accessions: Correlation between Gene Expression Profiles and Phenotypic ResponsesRemco M.P. Van Poecke, Masanao Sato, Lisa Lenarz-Wyatt, Sanford Weisberg, Fumiaki KatagiriPlant Cell Dec 2007, 19 (12) 4046-4060; DOI: https://doi.org/10.1105/tpc.107.053827
An analysis of Arabidopsis accessions differing in resistance to Pseudomonas syringae pv tomato containing the avrRpt2 effector gene shows that natural variation in induced gene expression profiles is correlated with natural variation in phenotypic responses, such as the hypersensitive response and resistance.
Veitia, Reiner A.
- You have accessRestricted AccessExploring the Molecular Etiology of Dominant-Negative MutationsReiner A. VeitiaPlant Cell Dec 2007, 19 (12) 3843-3851; DOI: https://doi.org/10.1105/tpc.107.055053
W
Watanabe, Masao
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
- You have accessRestricted AccessTwo Distinct Forms of M-Locus Protein Kinase Localize to the Plasma Membrane and Interact Directly with S-Locus Receptor Kinase to Transduce Self-Incompatibility Signaling in Brassica rapaMitsuru Kakita, Kohji Murase, Megumi Iwano, Tomohito Matsumoto, Masao Watanabe, Hiroshi Shiba, Akira Isogai, Seiji TakayamaPlant Cell Dec 2007, 19 (12) 3961-3973; DOI: https://doi.org/10.1105/tpc.106.049999
The M-locus protein kinase (MLPK) is a cytoplasmic protein kinase essential for self-incompatibility (SI) signaling in Brassica. This work shows that MLPK has two isoforms that localize to the plasma membrane by different molecular mechanisms. Further analyses suggest that these MLPK isoforms interact directly with the S-locus receptor kinase on the plasma membrane to transduce SI signaling.
Weijers, Dolf
- You have accessRestricted AccessCytokinins Act Directly on Lateral Root Founder Cells to Inhibit Root InitiationLaurent Laplaze, Eva Benkova, Ilda Casimiro, Lies Maes, Steffen Vanneste, Ranjan Swarup, Dolf Weijers, Vanessa Calvo, Boris Parizot, Maria Begoña Herrera-Rodriguez, Remko Offringa, Neil Graham, Patrick Doumas, Jiri Friml, Didier Bogusz, Tom Beeckman, Malcolm BennettPlant Cell Dec 2007, 19 (12) 3889-3900; DOI: https://doi.org/10.1105/tpc.107.055863
Whilst a great deal is known about how auxin promotes lateral root development, the mechanism of cytokinin repression is still unclear. This study shows that cytokinin inhibits lateral root initiation by downregulating the expression of auxin efflux carrier-encoding PIN genes in lateral root founder cells.
Weisberg, Sanford
- You have accessRestricted AccessNatural Variation in RPS2-Mediated Resistance among Arabidopsis Accessions: Correlation between Gene Expression Profiles and Phenotypic ResponsesRemco M.P. Van Poecke, Masanao Sato, Lisa Lenarz-Wyatt, Sanford Weisberg, Fumiaki KatagiriPlant Cell Dec 2007, 19 (12) 4046-4060; DOI: https://doi.org/10.1105/tpc.107.053827
An analysis of Arabidopsis accessions differing in resistance to Pseudomonas syringae pv tomato containing the avrRpt2 effector gene shows that natural variation in induced gene expression profiles is correlated with natural variation in phenotypic responses, such as the hypersensitive response and resistance.
Western, Tamara L.
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Whelan, Jim
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Wilson, Pip B.
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
Wirthmüller, Lennart
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
Witte, Claus-Peter
- You have accessRestricted AccessInteraction between SGT1 and Cytosolic/Nuclear HSC70 Chaperones Regulates Arabidopsis Immune ResponsesLaurent D. Noël, Giuseppe Cagna, Johannes Stuttmann, Lennart Wirthmüller, Shigeyuki Betsuyaku, Claus-Peter Witte, Riyaz Bhat, Nathalie Pochon, Thomas Colby, Jane E. ParkerPlant Cell Dec 2007, 19 (12) 4061-4076; DOI: https://doi.org/10.1105/tpc.107.051896
The authors show that association in vivo between the plant cochaperone SGT1 and cytosolic/nuclear HSC70 chaperones is necessary for several biotic and abiotic stress responses. The SGT1-HSC70 interaction is mediated by the evolutionarily conserved SGT1 C-terminal SGS domain.
Wong, Hann Ling
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Woo, Nick S.
- You have accessRestricted AccessSystemic and Intracellular Responses to Photooxidative Stress in ArabidopsisJan Bart Rossel, Pip B. Wilson, Dawar Hussain, Nick S. Woo, Matthew J. Gordon, Osman P. Mewett, Katharine A. Howell, Jim Whelan, Kemal Kazan, Barry J. PogsonPlant Cell Dec 2007, 19 (12) 4091-4110; DOI: https://doi.org/10.1105/tpc.106.045898
As the sun tracks daily through the sky from east to west, different parts of the canopy are exposed to excess light. This study demonstrates that a novel, systemic signal is rapidly transmitted within 15 min from exposed to shaded leaves, resulting in similar global transcriptional and acclimatory responses in exposed and shaded leaves of wild-type and stress signaling mutants of Arabidopsis.
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Yaeno, Takashi
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Yamamoto, Eiji
- You have accessRestricted AccessGibberellin Regulates Pollen Viability and Pollen Tube Growth in RiceTory Chhun, Koichiro Aya, Kenji Asano, Eiji Yamamoto, Yoichi Morinaka, Masao Watanabe, Hidemi Kitano, Motoyuki Ashikari, Makoto Matsuoka, Miyako Ueguchi-TanakaPlant Cell Dec 2007, 19 (12) 3876-3888; DOI: https://doi.org/10.1105/tpc.107.054759
This study shows that rice gibberellin (GA)–deficient mutations are transmitted in a non-Mendelian manner, whereas GA-insensitive mutations are transmitted normally. Analysis of pollen phenotypes and expression patterns of GA-related genes revealed that the transmission of GA-signaling genes occurs in a sporophytic manner and that of GA synthesis genes occurs in a gametophytic manner.
Yoshioka, Hirofumi
- Open AccessRegulation of Rice NADPH Oxidase by Binding of Rac GTPase to Its N-Terminal ExtensionHann Ling Wong, Reinhard Pinontoan, Kokoro Hayashi, Ryo Tabata, Takashi Yaeno, Kana Hasegawa, Chojiro Kojima, Hirofumi Yoshioka, Koh Iba, Tsutomu Kawasaki, Ko ShimamotoPlant Cell Dec 2007, 19 (12) 4022-4034; DOI: https://doi.org/10.1105/tpc.107.055624
Reactive oxygen species produced by NADPH oxidase (called the regulatory burst oxidase homolog or Rboh in plants) are important for the regulation of plant growth, development, and defense against pathogens. However, the regulatory mechanism of NADPH oxidase activity is unclear. This study shows that Rac GTPase binds to the N-terminal region and regulates the activity of Rboh in rice.
Young, Diana S.
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.
Yu, Weichang
- You have accessRestricted AccessMinichromosome Analysis of Chromosome Pairing, Disjunction, and Sister Chromatid Cohesion in MaizeFangpu Han, Zhi Gao, Weichang Yu, James A. BirchlerPlant Cell Dec 2007, 19 (12) 3853-3863; DOI: https://doi.org/10.1105/tpc.107.055905
This study investigated fundamental properties of minichromosomes. It was found that below a certain threshold, minichromosome pairing in meiosis does not depend upon size, but all small chromosomes exhibit a lack of sister chromatid cohesion at anaphase I whether pairing occurs or not.
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Zaman, Najia
- You have accessRestricted Access3-Hydroxy-3-Methylglutaryl Coenzyme A Reductase1 Interacts with NORK and Is Crucial for Nodulation in Medicago truncatulaZoltán Kevei, Géraldine Lougnon, Peter Mergaert, Gábor V. Horváth, Attila Kereszt, Dhileepkumar Jayaraman, Najia Zaman, Fabian Marcel, Krzysztof Regulski, György B. Kiss, Adam Kondorosi, Gabriella Endre, Eva Kondorosi, Jean-Michel AnéPlant Cell Dec 2007, 19 (12) 3974-3989; DOI: https://doi.org/10.1105/tpc.107.053975
The nodule-specific receptor-like kinase NORK is part of the Nod factor signaling pathway mediating root nodule development. This study shows that HMGR1, a key enzyme in the mevalonate biosynthetic pathway, interacts specifically with NORK and is crucial for nodulation. Recruitment of HMGR1 by NORK couples the isoprenoid pathway to symbiotic signaling and nodule development.
Zaninotto, Federica
- Open AccessS-Nitrosylation of Peroxiredoxin II E Promotes Peroxynitrite-Mediated Tyrosine NitrationMaria C. Romero-Puertas, Miriam Laxa, Alessandro Mattè, Federica Zaninotto, Iris Finkemeier, Alex M.E. Jones, Michele Perazzolli, Elodie Vandelle, Karl-Josef Dietz, Massimo DelledonnePlant Cell Dec 2007, 19 (12) 4120-4130; DOI: https://doi.org/10.1105/tpc.107.055061
S-nitrosylation is emerging as an important mechanism for the transduction of nitric oxide bioactivity. This study characterizes the molecular mechanism and functional significance for S-nitrosylation of peroxiredoxin II E, a protein that appears to play a crucial role in scavenging peroxynitrite, the product of the reaction of nitric oxide with superoxide, whose function in plants is still obscure
Zheng, Huanquan
- You have accessRestricted AccessThe Arabidopsis MUM2 Gene Encodes a β-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration PropertiesGillian H. Dean, Huanquan Zheng, Jagdish Tewari, Jun Huang, Diana S. Young, Yeen Ting Hwang, Tamara L. Western, Nicholas C. Carpita, Maureen C. McCann, Shawn D. Mansfield, George W. HaughnPlant Cell Dec 2007, 19 (12) 4007-4021; DOI: https://doi.org/10.1105/tpc.107.050609
This work demonstrates that the Arabidopsis seed coat can be used as a model system to identify enzymes that impact the properties of pectins in seed mucilage. The MUM2 gene encodes a β-galactosidase that is secreted to the apoplast and is required for the modification of pectin side chains, thus allowing mucilage expansion when mature seeds are hydrated.