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Table of Contents

The Plant Cell Online: 21 (6)
Jun 2009
  • A
  • B
  • C
  • D
  • E
  • F
  • G
  • H
  • I
  • J
  • K
  • L
  • M
  • N
  • O
  • P
  • Q
  • R
  • S
  • T
  • U
  • V
  • W
  • X
  • Y
  • Z

A

  1. Ahn, Tae Kyu

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

  2. Alonso, Rosario

    1. You have accessRestricted Access
      A Pivotal Role of the Basic Leucine Zipper Transcription Factor bZIP53 in the Regulation of Arabidopsis Seed Maturation Gene Expression Based on Heterodimerization and Protein Complex Formation
      Rosario Alonso, Luis Oñate-Sánchez, Fridtjof Weltmeier, Andrea Ehlert, Isabel Diaz, Katrin Dietrich, Jesús Vicente-Carbajosa, Wolfgang Dröge-Laser
      Plant Cell Jun 2009, 21 (6) 1747-1761; DOI: https://doi.org/10.1105/tpc.108.062968

      This work identifies the Arabidopsis basic leucine zipper protein bZIP53 as a regulator of seed maturation genes. The mechanism of transcriptional control is defined by heterodimerization with bZIP10 or bZIP25 and ternary complex formation with ABI3.

  3. Aparna, Gudlur

    1. You have accessRestricted Access
      A Cell Wall–Degrading Esterase of Xanthomonas oryzae Requires a Unique Substrate Recognition Module for Pathogenesis on Rice
      Gudlur Aparna, Avradip Chatterjee, Ramesh V. Sonti, Rajan Sankaranarayanan
      Plant Cell Jun 2009, 21 (6) 1860-1873; DOI: https://doi.org/10.1105/tpc.109.066886

      The structural study of a rice cell wall–degrading esterase LipA from Xanthomonas oryzae pv oryzae, the causal agent of bacterial leaf blight disease, reveals a unique domain that is essential for LipA function in planta and is conserved across the phytopathogenic genus Xanthomonas.

  4. Avenson, Thomas J.

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

B

  1. Ballottari, Matteo

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

  2. Bandyopadhyay, Anindita

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  3. Bangari, Bharat

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  4. Bassi, Roberto

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

  5. Benfey, Philip N.

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

  6. Blakeslee, Joshua J.

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  7. Bolduc, Nathalie

    1. Open Access
      The Maize Transcription Factor KNOTTED1 Directly Regulates the Gibberellin Catabolism Gene ga2ox1
      Nathalie Bolduc, Sarah Hake
      Plant Cell Jun 2009, 21 (6) 1647-1658; DOI: https://doi.org/10.1105/tpc.109.068221

      Little is known about how KN1 and other KNOX proteins promote the establishment and maintenance of plant meristems, as few of their targets have been identified. This work shows that KN1 negatively regulates gibberellin accumulation through positive control of ga2ox1, which codes for an enzyme that inactivates gibberellin. KN1 directly binds to a cis-regulatory element in an intron of ga2ox1.

  8. Böttcher, Christoph

    1. Open Access
      The Multifunctional Enzyme CYP71B15 (PHYTOALEXIN DEFICIENT3) Converts Cysteine-Indole-3-Acetonitrile to Camalexin in the Indole-3-Acetonitrile Metabolic Network of Arabidopsis thaliana
      Christoph Böttcher, Lore Westphal, Constanze Schmotz, Elke Prade, Dierk Scheel, Erich Glawischnig
      Plant Cell Jun 2009, 21 (6) 1830-1845; DOI: https://doi.org/10.1105/tpc.109.066670

      In a comprehensive metabolomics and precursor feeding approach, a network of indole-3-acetonitrile (IAN)–derived metabolites was identified in mutants of camalexin biosynthesis. A Cys conjugate of IAN was shown to be turned over directly to camalexin and cyanide by PHYTOALEXIN DEFICIENT3, a multifunctional cytochrome P450 enzyme.

  9. Brodersen, Peter

    1. You have accessRestricted Access
      Biochemical Evidence for Translational Repression by Arabidopsis MicroRNAs
      Elodie Lanet, Etienne Delannoy, Rodnay Sormani, Maïna Floris, Peter Brodersen, Patrice Crété, Olivier Voinnet, Christophe Robaglia
      Plant Cell Jun 2009, 21 (6) 1762-1768; DOI: https://doi.org/10.1105/tpc.108.063412

      This work provides biochemical evidence of the association of miRNAs with translating polysomes in Arabidopsis. These data support the idea that RNA silencing mechanisms in animal and plant kingdoms are more similar than previously thought.

C

  1. Cang, Huaixing

    1. You have accessRestricted Access
      Crystal Structure of the Complex between Pseudomonas Effector AvrPtoB and the Tomato Pto Kinase Reveals Both a Shared and a Unique Interface Compared with AvrPto-Pto
      Jing Dong, Fangming Xiao, Fenxia Fan, Lichuan Gu, Huaixing Cang, Gregory B. Martin, Jijie Chai
      Plant Cell Jun 2009, 21 (6) 1846-1859; DOI: https://doi.org/10.1105/tpc.109.066878

      Resistance to bacterial speck disease in tomato is activated upon interaction of the host Pto kinase with either of two pathogen proteins. This work provides structural insight into how a single host resistance protein can recognize two divergent bacterial effector proteins and supports a proposed mechanism in which each of these effector proteins relieves negative regulation by Pto.

  2. Carrie, Chris

    1. You have accessRestricted Access
      Exploring the Function-Location Nexus: Using Multiple Lines of Evidence in Defining the Subcellular Location of Plant Proteins
      A. Harvey Millar, Chris Carrie, Barry Pogson, James Whelan
      Plant Cell Jun 2009, 21 (6) 1625-1631; DOI: https://doi.org/10.1105/tpc.109.066019
  3. Chai, Jijie

    1. You have accessRestricted Access
      Crystal Structure of the Complex between Pseudomonas Effector AvrPtoB and the Tomato Pto Kinase Reveals Both a Shared and a Unique Interface Compared with AvrPto-Pto
      Jing Dong, Fangming Xiao, Fenxia Fan, Lichuan Gu, Huaixing Cang, Gregory B. Martin, Jijie Chai
      Plant Cell Jun 2009, 21 (6) 1846-1859; DOI: https://doi.org/10.1105/tpc.109.066878

      Resistance to bacterial speck disease in tomato is activated upon interaction of the host Pto kinase with either of two pathogen proteins. This work provides structural insight into how a single host resistance protein can recognize two divergent bacterial effector proteins and supports a proposed mechanism in which each of these effector proteins relieves negative regulation by Pto.

  4. Chatterjee, Avradip

    1. You have accessRestricted Access
      A Cell Wall–Degrading Esterase of Xanthomonas oryzae Requires a Unique Substrate Recognition Module for Pathogenesis on Rice
      Gudlur Aparna, Avradip Chatterjee, Ramesh V. Sonti, Rajan Sankaranarayanan
      Plant Cell Jun 2009, 21 (6) 1860-1873; DOI: https://doi.org/10.1105/tpc.109.066886

      The structural study of a rice cell wall–degrading esterase LipA from Xanthomonas oryzae pv oryzae, the causal agent of bacterial leaf blight disease, reveals a unique domain that is essential for LipA function in planta and is conserved across the phytopathogenic genus Xanthomonas.

  5. Cheng, Yan

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  6. Crété, Patrice

    1. You have accessRestricted Access
      Biochemical Evidence for Translational Repression by Arabidopsis MicroRNAs
      Elodie Lanet, Etienne Delannoy, Rodnay Sormani, Maïna Floris, Peter Brodersen, Patrice Crété, Olivier Voinnet, Christophe Robaglia
      Plant Cell Jun 2009, 21 (6) 1762-1768; DOI: https://doi.org/10.1105/tpc.108.063412

      This work provides biochemical evidence of the association of miRNAs with translating polysomes in Arabidopsis. These data support the idea that RNA silencing mechanisms in animal and plant kingdoms are more similar than previously thought.

  7. Cruz, Jeffrey A.

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

D

  1. Delannoy, Etienne

    1. You have accessRestricted Access
      Biochemical Evidence for Translational Repression by Arabidopsis MicroRNAs
      Elodie Lanet, Etienne Delannoy, Rodnay Sormani, Maïna Floris, Peter Brodersen, Patrice Crété, Olivier Voinnet, Christophe Robaglia
      Plant Cell Jun 2009, 21 (6) 1762-1768; DOI: https://doi.org/10.1105/tpc.108.063412

      This work provides biochemical evidence of the association of miRNAs with translating polysomes in Arabidopsis. These data support the idea that RNA silencing mechanisms in animal and plant kingdoms are more similar than previously thought.

  2. Diaz, Isabel

    1. You have accessRestricted Access
      A Pivotal Role of the Basic Leucine Zipper Transcription Factor bZIP53 in the Regulation of Arabidopsis Seed Maturation Gene Expression Based on Heterodimerization and Protein Complex Formation
      Rosario Alonso, Luis Oñate-Sánchez, Fridtjof Weltmeier, Andrea Ehlert, Isabel Diaz, Katrin Dietrich, Jesús Vicente-Carbajosa, Wolfgang Dröge-Laser
      Plant Cell Jun 2009, 21 (6) 1747-1761; DOI: https://doi.org/10.1105/tpc.108.062968

      This work identifies the Arabidopsis basic leucine zipper protein bZIP53 as a regulator of seed maturation genes. The mechanism of transcriptional control is defined by heterodimerization with bZIP10 or bZIP25 and ternary complex formation with ABI3.

  3. Dietrich, Katrin

    1. You have accessRestricted Access
      A Pivotal Role of the Basic Leucine Zipper Transcription Factor bZIP53 in the Regulation of Arabidopsis Seed Maturation Gene Expression Based on Heterodimerization and Protein Complex Formation
      Rosario Alonso, Luis Oñate-Sánchez, Fridtjof Weltmeier, Andrea Ehlert, Isabel Diaz, Katrin Dietrich, Jesús Vicente-Carbajosa, Wolfgang Dröge-Laser
      Plant Cell Jun 2009, 21 (6) 1747-1761; DOI: https://doi.org/10.1105/tpc.108.062968

      This work identifies the Arabidopsis basic leucine zipper protein bZIP53 as a regulator of seed maturation genes. The mechanism of transcriptional control is defined by heterodimerization with bZIP10 or bZIP25 and ternary complex formation with ABI3.

  4. Dong, Jing

    1. You have accessRestricted Access
      Crystal Structure of the Complex between Pseudomonas Effector AvrPtoB and the Tomato Pto Kinase Reveals Both a Shared and a Unique Interface Compared with AvrPto-Pto
      Jing Dong, Fangming Xiao, Fenxia Fan, Lichuan Gu, Huaixing Cang, Gregory B. Martin, Jijie Chai
      Plant Cell Jun 2009, 21 (6) 1846-1859; DOI: https://doi.org/10.1105/tpc.109.066878

      Resistance to bacterial speck disease in tomato is activated upon interaction of the host Pto kinase with either of two pathogen proteins. This work provides structural insight into how a single host resistance protein can recognize two divergent bacterial effector proteins and supports a proposed mechanism in which each of these effector proteins relieves negative regulation by Pto.

  5. Dröge-Laser, Wolfgang

    1. You have accessRestricted Access
      A Pivotal Role of the Basic Leucine Zipper Transcription Factor bZIP53 in the Regulation of Arabidopsis Seed Maturation Gene Expression Based on Heterodimerization and Protein Complex Formation
      Rosario Alonso, Luis Oñate-Sánchez, Fridtjof Weltmeier, Andrea Ehlert, Isabel Diaz, Katrin Dietrich, Jesús Vicente-Carbajosa, Wolfgang Dröge-Laser
      Plant Cell Jun 2009, 21 (6) 1747-1761; DOI: https://doi.org/10.1105/tpc.108.062968

      This work identifies the Arabidopsis basic leucine zipper protein bZIP53 as a regulator of seed maturation genes. The mechanism of transcriptional control is defined by heterodimerization with bZIP10 or bZIP25 and ternary complex formation with ABI3.

E

  1. Eckardt, Nancy A.

    1. You have accessRestricted Access
      A High-Resolution Map of Auxin Distribution in the Arabidopsis Root Apex
      Nancy A. Eckardt
      Plant Cell Jun 2009, 21 (6) 1621; DOI: https://doi.org/10.1105/tpc.109.210610
    2. You have accessRestricted Access
      Investigating Translational Repression by MicroRNAs in Arabidopsis
      Nancy A. Eckardt
      Plant Cell Jun 2009, 21 (6) 1624; DOI: https://doi.org/10.1105/tpc.109.210613
  2. Ehlert, Andrea

    1. You have accessRestricted Access
      A Pivotal Role of the Basic Leucine Zipper Transcription Factor bZIP53 in the Regulation of Arabidopsis Seed Maturation Gene Expression Based on Heterodimerization and Protein Complex Formation
      Rosario Alonso, Luis Oñate-Sánchez, Fridtjof Weltmeier, Andrea Ehlert, Isabel Diaz, Katrin Dietrich, Jesús Vicente-Carbajosa, Wolfgang Dröge-Laser
      Plant Cell Jun 2009, 21 (6) 1747-1761; DOI: https://doi.org/10.1105/tpc.108.062968

      This work identifies the Arabidopsis basic leucine zipper protein bZIP53 as a regulator of seed maturation genes. The mechanism of transcriptional control is defined by heterodimerization with bZIP10 or bZIP25 and ternary complex formation with ABI3.

F

  1. Fan, Fenxia

    1. You have accessRestricted Access
      Crystal Structure of the Complex between Pseudomonas Effector AvrPtoB and the Tomato Pto Kinase Reveals Both a Shared and a Unique Interface Compared with AvrPto-Pto
      Jing Dong, Fangming Xiao, Fenxia Fan, Lichuan Gu, Huaixing Cang, Gregory B. Martin, Jijie Chai
      Plant Cell Jun 2009, 21 (6) 1846-1859; DOI: https://doi.org/10.1105/tpc.109.066878

      Resistance to bacterial speck disease in tomato is activated upon interaction of the host Pto kinase with either of two pathogen proteins. This work provides structural insight into how a single host resistance protein can recognize two divergent bacterial effector proteins and supports a proposed mechanism in which each of these effector proteins relieves negative regulation by Pto.

  2. Farquharson, Kathleen L.

    1. You have accessRestricted Access
      A Plastidic Transporter Involved in Aliphatic Glucosinolate Biosynthesis
      Kathleen L. Farquharson
      Plant Cell Jun 2009, 21 (6) 1622; DOI: https://doi.org/10.1105/tpc.109.210611
  3. Fleming, Graham R.

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

  4. Floris, Maïna

    1. You have accessRestricted Access
      Biochemical Evidence for Translational Repression by Arabidopsis MicroRNAs
      Elodie Lanet, Etienne Delannoy, Rodnay Sormani, Maïna Floris, Peter Brodersen, Patrice Crété, Olivier Voinnet, Christophe Robaglia
      Plant Cell Jun 2009, 21 (6) 1762-1768; DOI: https://doi.org/10.1105/tpc.108.063412

      This work provides biochemical evidence of the association of miRNAs with translating polysomes in Arabidopsis. These data support the idea that RNA silencing mechanisms in animal and plant kingdoms are more similar than previously thought.

  5. Flügge, Ulf-Ingo

    1. You have accessRestricted Access
      The Plastidic Bile Acid Transporter 5 Is Required for the Biosynthesis of Methionine-Derived Glucosinolates in Arabidopsis thaliana
      Tamara Gigolashvili, Ruslan Yatusevich, Inga Rollwitz, Melanie Humphry, Jonathan Gershenzon, Ulf-Ingo Flügge
      Plant Cell Jun 2009, 21 (6) 1813-1829; DOI: https://doi.org/10.1105/tpc.109.066399

      This work demonstrates that the chloroplastidic BAT5 transporter is required for side chain elongation of Met-derived glucosinolates in Arabidopsis. Comparative feeding experiments of bat5 and wild-type plants using 2-keto acids and amino acids of different chain length suggested that BAT5 functions as a plastidic transporter for 2-keto acids.

G

  1. Gershenzon, Jonathan

    1. You have accessRestricted Access
      The Plastidic Bile Acid Transporter 5 Is Required for the Biosynthesis of Methionine-Derived Glucosinolates in Arabidopsis thaliana
      Tamara Gigolashvili, Ruslan Yatusevich, Inga Rollwitz, Melanie Humphry, Jonathan Gershenzon, Ulf-Ingo Flügge
      Plant Cell Jun 2009, 21 (6) 1813-1829; DOI: https://doi.org/10.1105/tpc.109.066399

      This work demonstrates that the chloroplastidic BAT5 transporter is required for side chain elongation of Met-derived glucosinolates in Arabidopsis. Comparative feeding experiments of bat5 and wild-type plants using 2-keto acids and amino acids of different chain length suggested that BAT5 functions as a plastidic transporter for 2-keto acids.

  2. Gigolashvili, Tamara

    1. You have accessRestricted Access
      The Plastidic Bile Acid Transporter 5 Is Required for the Biosynthesis of Methionine-Derived Glucosinolates in Arabidopsis thaliana
      Tamara Gigolashvili, Ruslan Yatusevich, Inga Rollwitz, Melanie Humphry, Jonathan Gershenzon, Ulf-Ingo Flügge
      Plant Cell Jun 2009, 21 (6) 1813-1829; DOI: https://doi.org/10.1105/tpc.109.066399

      This work demonstrates that the chloroplastidic BAT5 transporter is required for side chain elongation of Met-derived glucosinolates in Arabidopsis. Comparative feeding experiments of bat5 and wild-type plants using 2-keto acids and amino acids of different chain length suggested that BAT5 functions as a plastidic transporter for 2-keto acids.

  3. Glawischnig, Erich

    1. Open Access
      The Multifunctional Enzyme CYP71B15 (PHYTOALEXIN DEFICIENT3) Converts Cysteine-Indole-3-Acetonitrile to Camalexin in the Indole-3-Acetonitrile Metabolic Network of Arabidopsis thaliana
      Christoph Böttcher, Lore Westphal, Constanze Schmotz, Elke Prade, Dierk Scheel, Erich Glawischnig
      Plant Cell Jun 2009, 21 (6) 1830-1845; DOI: https://doi.org/10.1105/tpc.109.066670

      In a comprehensive metabolomics and precursor feeding approach, a network of indole-3-acetonitrile (IAN)–derived metabolites was identified in mutants of camalexin biosynthesis. A Cys conjugate of IAN was shown to be turned over directly to camalexin and cyanide by PHYTOALEXIN DEFICIENT3, a multifunctional cytochrome P450 enzyme.

  4. Grebe, Markus

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

  5. Gu, Lichuan

    1. You have accessRestricted Access
      Crystal Structure of the Complex between Pseudomonas Effector AvrPtoB and the Tomato Pto Kinase Reveals Both a Shared and a Unique Interface Compared with AvrPto-Pto
      Jing Dong, Fangming Xiao, Fenxia Fan, Lichuan Gu, Huaixing Cang, Gregory B. Martin, Jijie Chai
      Plant Cell Jun 2009, 21 (6) 1846-1859; DOI: https://doi.org/10.1105/tpc.109.066878

      Resistance to bacterial speck disease in tomato is activated upon interaction of the host Pto kinase with either of two pathogen proteins. This work provides structural insight into how a single host resistance protein can recognize two divergent bacterial effector proteins and supports a proposed mechanism in which each of these effector proteins relieves negative regulation by Pto.

  6. Gu, Xiaofeng

    1. You have accessRestricted Access
      Establishment of the Winter-Annual Growth Habit via FRIGIDA-Mediated Histone Methylation at FLOWERING LOCUS C in Arabidopsis
      Danhua Jiang, Xiaofeng Gu, Yuehui He
      Plant Cell Jun 2009, 21 (6) 1733-1746; DOI: https://doi.org/10.1105/tpc.109.067967

      This study shows that an Arabidopsis homolog of the human WDR5 protein, a core component of histone H3 lysine-4 (H3K4) methyltransferase complexes, binds the H3 tail and interacts with an H3K4 methyltransferase. FRIGIDA mediates the enrichment of this protein at FLOWERING LOCUS C, leading to elevated H3K4 trimethylation in FLC, to upregulate its expression and thus inhibits flowering.

H

  1. Hake, Sarah

    1. Open Access
      The Maize Transcription Factor KNOTTED1 Directly Regulates the Gibberellin Catabolism Gene ga2ox1
      Nathalie Bolduc, Sarah Hake
      Plant Cell Jun 2009, 21 (6) 1647-1658; DOI: https://doi.org/10.1105/tpc.109.068221

      Little is known about how KN1 and other KNOX proteins promote the establishment and maintenance of plant meristems, as few of their targets have been identified. This work shows that KN1 negatively regulates gibberellin accumulation through positive control of ga2ox1, which codes for an enzyme that inactivates gibberellin. KN1 directly binds to a cis-regulatory element in an intron of ga2ox1.

  2. Hall, Anthony

    1. You have accessRestricted Access
      A Role for Multiple Circadian Clock Genes in the Response to Signals That Break Seed Dormancy in Arabidopsis
      Steven Penfield, Anthony Hall
      Plant Cell Jun 2009, 21 (6) 1722-1732; DOI: https://doi.org/10.1105/tpc.108.064022

      After-ripening is a little-known process occurring in dry seeds that results in loss of dormancy upon imbibition. This work shows that after-ripening affects the expression of genes comprising the circadian oscillator and that well-known circadian clock genes have roles in the control of Arabidopsis seed germination.

  3. He, Yuehui

    1. You have accessRestricted Access
      Establishment of the Winter-Annual Growth Habit via FRIGIDA-Mediated Histone Methylation at FLOWERING LOCUS C in Arabidopsis
      Danhua Jiang, Xiaofeng Gu, Yuehui He
      Plant Cell Jun 2009, 21 (6) 1733-1746; DOI: https://doi.org/10.1105/tpc.109.067967

      This study shows that an Arabidopsis homolog of the human WDR5 protein, a core component of histone H3 lysine-4 (H3K4) methyltransferase complexes, binds the H3 tail and interacts with an H3K4 methyltransferase. FRIGIDA mediates the enrichment of this protein at FLOWERING LOCUS C, leading to elevated H3K4 trimethylation in FLC, to upregulate its expression and thus inhibits flowering.

  4. Hirabayashi, Yoshino

    1. You have accessRestricted Access
      A 1-Megadalton Translocation Complex Containing Tic20 and Tic21 Mediates Chloroplast Protein Import at the Inner Envelope Membrane
      Shingo Kikuchi, Maya Oishi, Yoshino Hirabayashi, Dong Wook Lee, Inhwan Hwang, Masato Nakai
      Plant Cell Jun 2009, 21 (6) 1781-1797; DOI: https://doi.org/10.1105/tpc.108.063552

      This work describes the identification of a 1-MD translocation complex as a novel intermediate during general protein translocation across the inner membrane of chloroplasts. Tic20 and Tic21 are involved in the 1-MD complex, whereas Tic110, the most characterized component of the protein translocon at the inner membrane, exists as a distinct entity from the 1-MD complex.

  5. Hofmann, Nancy R.

    1. You have accessRestricted Access
      The Tomato Pto Kinase Uses Shared and Unique Surfaces to Recognize Divergent Avirulence Proteins
      Nancy R. Hofmann
      Plant Cell Jun 2009, 21 (6) 1623; DOI: https://doi.org/10.1105/tpc.109.210612
  6. Hosein, Fazeeda N.

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  7. Humphry, Melanie

    1. You have accessRestricted Access
      The Plastidic Bile Acid Transporter 5 Is Required for the Biosynthesis of Methionine-Derived Glucosinolates in Arabidopsis thaliana
      Tamara Gigolashvili, Ruslan Yatusevich, Inga Rollwitz, Melanie Humphry, Jonathan Gershenzon, Ulf-Ingo Flügge
      Plant Cell Jun 2009, 21 (6) 1813-1829; DOI: https://doi.org/10.1105/tpc.109.066399

      This work demonstrates that the chloroplastidic BAT5 transporter is required for side chain elongation of Met-derived glucosinolates in Arabidopsis. Comparative feeding experiments of bat5 and wild-type plants using 2-keto acids and amino acids of different chain length suggested that BAT5 functions as a plastidic transporter for 2-keto acids.

  8. Hwang, Inhwan

    1. You have accessRestricted Access
      A 1-Megadalton Translocation Complex Containing Tic20 and Tic21 Mediates Chloroplast Protein Import at the Inner Envelope Membrane
      Shingo Kikuchi, Maya Oishi, Yoshino Hirabayashi, Dong Wook Lee, Inhwan Hwang, Masato Nakai
      Plant Cell Jun 2009, 21 (6) 1781-1797; DOI: https://doi.org/10.1105/tpc.108.063552

      This work describes the identification of a 1-MD translocation complex as a novel intermediate during general protein translocation across the inner membrane of chloroplasts. Tic20 and Tic21 are involved in the 1-MD complex, whereas Tic110, the most characterized component of the protein translocon at the inner membrane, exists as a distinct entity from the 1-MD complex.

I

  1. Ichikawa, Takanari

    1. You have accessRestricted Access
      The PLASTID DIVISION1 and 2 Components of the Chloroplast Division Machinery Determine the Rate of Chloroplast Division in Land Plant Cell Differentiation
      Kumiko Okazaki, Yukihiro Kabeya, Kenji Suzuki, Toshiyuki Mori, Takanari Ichikawa, Minami Matsui, Hiromitsu Nakanishi, Shin-ya Miyagishima
      Plant Cell Jun 2009, 21 (6) 1769-1780; DOI: https://doi.org/10.1105/tpc.109.067785

      In contrast with most algae, in which chloroplast division keeps pace with cell division, land plant cells change the chloroplast division rate (i.e., size and number of chloroplasts) in accord with cell differentiation. This study suggests that acquisition of PLASTID DIVISION proteins by land plants enabled cells to change the chloroplast division rate based on cell differentiation.

J

  1. Jiang, Danhua

    1. You have accessRestricted Access
      Establishment of the Winter-Annual Growth Habit via FRIGIDA-Mediated Histone Methylation at FLOWERING LOCUS C in Arabidopsis
      Danhua Jiang, Xiaofeng Gu, Yuehui He
      Plant Cell Jun 2009, 21 (6) 1733-1746; DOI: https://doi.org/10.1105/tpc.109.067967

      This study shows that an Arabidopsis homolog of the human WDR5 protein, a core component of histone H3 lysine-4 (H3K4) methyltransferase complexes, binds the H3 tail and interacts with an H3K4 methyltransferase. FRIGIDA mediates the enrichment of this protein at FLOWERING LOCUS C, leading to elevated H3K4 trimethylation in FLC, to upregulate its expression and thus inhibits flowering.

  2. Johansson, Annika I.

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

K

  1. Kabeya, Yukihiro

    1. You have accessRestricted Access
      The PLASTID DIVISION1 and 2 Components of the Chloroplast Division Machinery Determine the Rate of Chloroplast Division in Land Plant Cell Differentiation
      Kumiko Okazaki, Yukihiro Kabeya, Kenji Suzuki, Toshiyuki Mori, Takanari Ichikawa, Minami Matsui, Hiromitsu Nakanishi, Shin-ya Miyagishima
      Plant Cell Jun 2009, 21 (6) 1769-1780; DOI: https://doi.org/10.1105/tpc.109.067785

      In contrast with most algae, in which chloroplast division keeps pace with cell division, land plant cells change the chloroplast division rate (i.e., size and number of chloroplasts) in accord with cell differentiation. This study suggests that acquisition of PLASTID DIVISION proteins by land plants enabled cells to change the chloroplast division rate based on cell differentiation.

  2. Keasling, Jay D.

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

  3. Kikuchi, Shingo

    1. You have accessRestricted Access
      A 1-Megadalton Translocation Complex Containing Tic20 and Tic21 Mediates Chloroplast Protein Import at the Inner Envelope Membrane
      Shingo Kikuchi, Maya Oishi, Yoshino Hirabayashi, Dong Wook Lee, Inhwan Hwang, Masato Nakai
      Plant Cell Jun 2009, 21 (6) 1781-1797; DOI: https://doi.org/10.1105/tpc.108.063552

      This work describes the identification of a 1-MD translocation complex as a novel intermediate during general protein translocation across the inner membrane of chloroplasts. Tic20 and Tic21 are involved in the 1-MD complex, whereas Tic110, the most characterized component of the protein translocon at the inner membrane, exists as a distinct entity from the 1-MD complex.

  4. Kim, Jitae

    1. You have accessRestricted Access
      Subunits of the Plastid ClpPR Protease Complex Have Differential Contributions to Embryogenesis, Plastid Biogenesis, and Plant Development in Arabidopsis
      Jitae Kim, Andrea Rudella, Verenice Ramirez Rodriguez, Boris Zybailov, Paul Dominic B. Olinares, Klaas J. van Wijk
      Plant Cell Jun 2009, 21 (6) 1669-1692; DOI: https://doi.org/10.1105/tpc.108.063784

      Mutant, microscopy, and large-scale comparative proteome analyses of Arabidopsis demonstrate a central role of the Clp protease complex in chloroplast biogenesis and protein homeostasis, with different contributions of the ClpP and ClpR subunits. Lack of transcriptional and translational regulation suggests that regulation of Clp activity occurs through Clp complex assembly and substrate delivery.

  5. Kliebenstein, DanielJ.

    1. You have accessRestricted Access
      Advancing Genetic Theory and Application by Metabolic Quantitative Trait Loci Analysis
      DanielJ. Kliebenstein
      Plant Cell Jun 2009, 21 (6) 1637-1646; DOI: https://doi.org/10.1105/tpc.109.067611
  6. Kowalczyk, Mariusz

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

  7. Kramer, David M.

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

L

  1. Lanet, Elodie

    1. You have accessRestricted Access
      Biochemical Evidence for Translational Repression by Arabidopsis MicroRNAs
      Elodie Lanet, Etienne Delannoy, Rodnay Sormani, Maïna Floris, Peter Brodersen, Patrice Crété, Olivier Voinnet, Christophe Robaglia
      Plant Cell Jun 2009, 21 (6) 1762-1768; DOI: https://doi.org/10.1105/tpc.108.063412

      This work provides biochemical evidence of the association of miRNAs with translating polysomes in Arabidopsis. These data support the idea that RNA silencing mechanisms in animal and plant kingdoms are more similar than previously thought.

  2. Lee, Dong Wook

    1. You have accessRestricted Access
      A 1-Megadalton Translocation Complex Containing Tic20 and Tic21 Mediates Chloroplast Protein Import at the Inner Envelope Membrane
      Shingo Kikuchi, Maya Oishi, Yoshino Hirabayashi, Dong Wook Lee, Inhwan Hwang, Masato Nakai
      Plant Cell Jun 2009, 21 (6) 1781-1797; DOI: https://doi.org/10.1105/tpc.108.063552

      This work describes the identification of a 1-MD translocation complex as a novel intermediate during general protein translocation across the inner membrane of chloroplasts. Tic20 and Tic21 are involved in the 1-MD complex, whereas Tic110, the most characterized component of the protein translocon at the inner membrane, exists as a distinct entity from the 1-MD complex.

  3. Lee, Gil-Je

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  4. Li, Zhirong

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

  5. Ljung, Karin

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

M

  1. Makam, Srinivas N.

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  2. Makoveychuk, Alexander

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

  3. Martin, Gregory B.

    1. You have accessRestricted Access
      Crystal Structure of the Complex between Pseudomonas Effector AvrPtoB and the Tomato Pto Kinase Reveals Both a Shared and a Unique Interface Compared with AvrPto-Pto
      Jing Dong, Fangming Xiao, Fenxia Fan, Lichuan Gu, Huaixing Cang, Gregory B. Martin, Jijie Chai
      Plant Cell Jun 2009, 21 (6) 1846-1859; DOI: https://doi.org/10.1105/tpc.109.066878

      Resistance to bacterial speck disease in tomato is activated upon interaction of the host Pto kinase with either of two pathogen proteins. This work provides structural insight into how a single host resistance protein can recognize two divergent bacterial effector proteins and supports a proposed mechanism in which each of these effector proteins relieves negative regulation by Pto.

  4. Matsui, Minami

    1. You have accessRestricted Access
      The PLASTID DIVISION1 and 2 Components of the Chloroplast Division Machinery Determine the Rate of Chloroplast Division in Land Plant Cell Differentiation
      Kumiko Okazaki, Yukihiro Kabeya, Kenji Suzuki, Toshiyuki Mori, Takanari Ichikawa, Minami Matsui, Hiromitsu Nakanishi, Shin-ya Miyagishima
      Plant Cell Jun 2009, 21 (6) 1769-1780; DOI: https://doi.org/10.1105/tpc.109.067785

      In contrast with most algae, in which chloroplast division keeps pace with cell division, land plant cells change the chloroplast division rate (i.e., size and number of chloroplasts) in accord with cell differentiation. This study suggests that acquisition of PLASTID DIVISION proteins by land plants enabled cells to change the chloroplast division rate based on cell differentiation.

  5. Millar, A. Harvey

    1. You have accessRestricted Access
      Exploring the Function-Location Nexus: Using Multiple Lines of Evidence in Defining the Subcellular Location of Plant Proteins
      A. Harvey Millar, Chris Carrie, Barry Pogson, James Whelan
      Plant Cell Jun 2009, 21 (6) 1625-1631; DOI: https://doi.org/10.1105/tpc.109.066019
  6. Miyagishima, Shin-ya

    1. You have accessRestricted Access
      The PLASTID DIVISION1 and 2 Components of the Chloroplast Division Machinery Determine the Rate of Chloroplast Division in Land Plant Cell Differentiation
      Kumiko Okazaki, Yukihiro Kabeya, Kenji Suzuki, Toshiyuki Mori, Takanari Ichikawa, Minami Matsui, Hiromitsu Nakanishi, Shin-ya Miyagishima
      Plant Cell Jun 2009, 21 (6) 1769-1780; DOI: https://doi.org/10.1105/tpc.109.067785

      In contrast with most algae, in which chloroplast division keeps pace with cell division, land plant cells change the chloroplast division rate (i.e., size and number of chloroplasts) in accord with cell differentiation. This study suggests that acquisition of PLASTID DIVISION proteins by land plants enabled cells to change the chloroplast division rate based on cell differentiation.

  7. Moore, Ian

    1. You have accessRestricted Access
      Validating the Location of Fluorescent Protein Fusions in the Endomembrane System
      Ian Moore, Angus Murphy
      Plant Cell Jun 2009, 21 (6) 1632-1636; DOI: https://doi.org/10.1105/tpc.109.068668
  8. Mori, Toshiyuki

    1. You have accessRestricted Access
      The PLASTID DIVISION1 and 2 Components of the Chloroplast Division Machinery Determine the Rate of Chloroplast Division in Land Plant Cell Differentiation
      Kumiko Okazaki, Yukihiro Kabeya, Kenji Suzuki, Toshiyuki Mori, Takanari Ichikawa, Minami Matsui, Hiromitsu Nakanishi, Shin-ya Miyagishima
      Plant Cell Jun 2009, 21 (6) 1769-1780; DOI: https://doi.org/10.1105/tpc.109.067785

      In contrast with most algae, in which chloroplast division keeps pace with cell division, land plant cells change the chloroplast division rate (i.e., size and number of chloroplasts) in accord with cell differentiation. This study suggests that acquisition of PLASTID DIVISION proteins by land plants enabled cells to change the chloroplast division rate based on cell differentiation.

  9. Moritz, Thomas

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

  10. Murphy, Angus

    1. You have accessRestricted Access
      Validating the Location of Fluorescent Protein Fusions in the Endomembrane System
      Ian Moore, Angus Murphy
      Plant Cell Jun 2009, 21 (6) 1632-1636; DOI: https://doi.org/10.1105/tpc.109.068668
  11. Murphy, Angus S.

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

N

  1. Nakai, Masato

    1. You have accessRestricted Access
      A 1-Megadalton Translocation Complex Containing Tic20 and Tic21 Mediates Chloroplast Protein Import at the Inner Envelope Membrane
      Shingo Kikuchi, Maya Oishi, Yoshino Hirabayashi, Dong Wook Lee, Inhwan Hwang, Masato Nakai
      Plant Cell Jun 2009, 21 (6) 1781-1797; DOI: https://doi.org/10.1105/tpc.108.063552

      This work describes the identification of a 1-MD translocation complex as a novel intermediate during general protein translocation across the inner membrane of chloroplasts. Tic20 and Tic21 are involved in the 1-MD complex, whereas Tic110, the most characterized component of the protein translocon at the inner membrane, exists as a distinct entity from the 1-MD complex.

  2. Nakanishi, Hiromitsu

    1. You have accessRestricted Access
      The PLASTID DIVISION1 and 2 Components of the Chloroplast Division Machinery Determine the Rate of Chloroplast Division in Land Plant Cell Differentiation
      Kumiko Okazaki, Yukihiro Kabeya, Kenji Suzuki, Toshiyuki Mori, Takanari Ichikawa, Minami Matsui, Hiromitsu Nakanishi, Shin-ya Miyagishima
      Plant Cell Jun 2009, 21 (6) 1769-1780; DOI: https://doi.org/10.1105/tpc.109.067785

      In contrast with most algae, in which chloroplast division keeps pace with cell division, land plant cells change the chloroplast division rate (i.e., size and number of chloroplasts) in accord with cell differentiation. This study suggests that acquisition of PLASTID DIVISION proteins by land plants enabled cells to change the chloroplast division rate based on cell differentiation.

  3. Niyogi, Krishna K.

    1. Open Access
      Lutein Accumulation in the Absence of Zeaxanthin Restores Nonphotochemical Quenching in the Arabidopsis thaliana npq1 Mutant
      Zhirong Li, Tae Kyu Ahn, Thomas J. Avenson, Matteo Ballottari, Jeffrey A. Cruz, David M. Kramer, Roberto Bassi, Graham R. Fleming, Jay D. Keasling, Krishna K. Niyogi
      Plant Cell Jun 2009, 21 (6) 1798-1812; DOI: https://doi.org/10.1105/tpc.109.066571

      A mutation in the lycopene β-cyclase gene of Arabidopsis increases the accumulation of lutein, which can partially substitute for the role of zeaxanthin in regulation of photosynthetic light harvesting via thermal dissipation of excess absorbed light energy.

O

  1. Oishi, Maya

    1. You have accessRestricted Access
      A 1-Megadalton Translocation Complex Containing Tic20 and Tic21 Mediates Chloroplast Protein Import at the Inner Envelope Membrane
      Shingo Kikuchi, Maya Oishi, Yoshino Hirabayashi, Dong Wook Lee, Inhwan Hwang, Masato Nakai
      Plant Cell Jun 2009, 21 (6) 1781-1797; DOI: https://doi.org/10.1105/tpc.108.063552

      This work describes the identification of a 1-MD translocation complex as a novel intermediate during general protein translocation across the inner membrane of chloroplasts. Tic20 and Tic21 are involved in the 1-MD complex, whereas Tic110, the most characterized component of the protein translocon at the inner membrane, exists as a distinct entity from the 1-MD complex.

  2. Okazaki, Kumiko

    1. You have accessRestricted Access
      The PLASTID DIVISION1 and 2 Components of the Chloroplast Division Machinery Determine the Rate of Chloroplast Division in Land Plant Cell Differentiation
      Kumiko Okazaki, Yukihiro Kabeya, Kenji Suzuki, Toshiyuki Mori, Takanari Ichikawa, Minami Matsui, Hiromitsu Nakanishi, Shin-ya Miyagishima
      Plant Cell Jun 2009, 21 (6) 1769-1780; DOI: https://doi.org/10.1105/tpc.109.067785

      In contrast with most algae, in which chloroplast division keeps pace with cell division, land plant cells change the chloroplast division rate (i.e., size and number of chloroplasts) in accord with cell differentiation. This study suggests that acquisition of PLASTID DIVISION proteins by land plants enabled cells to change the chloroplast division rate based on cell differentiation.

  3. Olinares, Paul Dominic B.

    1. You have accessRestricted Access
      Subunits of the Plastid ClpPR Protease Complex Have Differential Contributions to Embryogenesis, Plastid Biogenesis, and Plant Development in Arabidopsis
      Jitae Kim, Andrea Rudella, Verenice Ramirez Rodriguez, Boris Zybailov, Paul Dominic B. Olinares, Klaas J. van Wijk
      Plant Cell Jun 2009, 21 (6) 1669-1692; DOI: https://doi.org/10.1105/tpc.108.063784

      Mutant, microscopy, and large-scale comparative proteome analyses of Arabidopsis demonstrate a central role of the Clp protease complex in chloroplast biogenesis and protein homeostasis, with different contributions of the ClpP and ClpR subunits. Lack of transcriptional and translational regulation suggests that regulation of Clp activity occurs through Clp complex assembly and substrate delivery.

  4. Oñate-Sánchez, Luis

    1. You have accessRestricted Access
      A Pivotal Role of the Basic Leucine Zipper Transcription Factor bZIP53 in the Regulation of Arabidopsis Seed Maturation Gene Expression Based on Heterodimerization and Protein Complex Formation
      Rosario Alonso, Luis Oñate-Sánchez, Fridtjof Weltmeier, Andrea Ehlert, Isabel Diaz, Katrin Dietrich, Jesús Vicente-Carbajosa, Wolfgang Dröge-Laser
      Plant Cell Jun 2009, 21 (6) 1747-1761; DOI: https://doi.org/10.1105/tpc.108.062968

      This work identifies the Arabidopsis basic leucine zipper protein bZIP53 as a regulator of seed maturation genes. The mechanism of transcriptional control is defined by heterodimerization with bZIP10 or bZIP25 and ternary complex formation with ABI3.

  5. Otegui, Marisa S.

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

P

  1. Peer, Wendy Ann

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  2. Penfield, Steven

    1. You have accessRestricted Access
      A Role for Multiple Circadian Clock Genes in the Response to Signals That Break Seed Dormancy in Arabidopsis
      Steven Penfield, Anthony Hall
      Plant Cell Jun 2009, 21 (6) 1722-1732; DOI: https://doi.org/10.1105/tpc.108.064022

      After-ripening is a little-known process occurring in dry seeds that results in loss of dormancy upon imbibition. This work shows that after-ripening affects the expression of genes comprising the circadian oscillator and that well-known circadian clock genes have roles in the control of Arabidopsis seed germination.

  3. Petersson, Sara V.

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

  4. Pogson, Barry

    1. You have accessRestricted Access
      Exploring the Function-Location Nexus: Using Multiple Lines of Evidence in Defining the Subcellular Location of Plant Proteins
      A. Harvey Millar, Chris Carrie, Barry Pogson, James Whelan
      Plant Cell Jun 2009, 21 (6) 1625-1631; DOI: https://doi.org/10.1105/tpc.109.066019
  5. Prade, Elke

    1. Open Access
      The Multifunctional Enzyme CYP71B15 (PHYTOALEXIN DEFICIENT3) Converts Cysteine-Indole-3-Acetonitrile to Camalexin in the Indole-3-Acetonitrile Metabolic Network of Arabidopsis thaliana
      Christoph Böttcher, Lore Westphal, Constanze Schmotz, Elke Prade, Dierk Scheel, Erich Glawischnig
      Plant Cell Jun 2009, 21 (6) 1830-1845; DOI: https://doi.org/10.1105/tpc.109.066670

      In a comprehensive metabolomics and precursor feeding approach, a network of indole-3-acetonitrile (IAN)–derived metabolites was identified in mutants of camalexin biosynthesis. A Cys conjugate of IAN was shown to be turned over directly to camalexin and cyanide by PHYTOALEXIN DEFICIENT3, a multifunctional cytochrome P450 enzyme.

R

  1. Ramirez Rodriguez, Verenice

    1. You have accessRestricted Access
      Subunits of the Plastid ClpPR Protease Complex Have Differential Contributions to Embryogenesis, Plastid Biogenesis, and Plant Development in Arabidopsis
      Jitae Kim, Andrea Rudella, Verenice Ramirez Rodriguez, Boris Zybailov, Paul Dominic B. Olinares, Klaas J. van Wijk
      Plant Cell Jun 2009, 21 (6) 1669-1692; DOI: https://doi.org/10.1105/tpc.108.063784

      Mutant, microscopy, and large-scale comparative proteome analyses of Arabidopsis demonstrate a central role of the Clp protease complex in chloroplast biogenesis and protein homeostasis, with different contributions of the ClpP and ClpR subunits. Lack of transcriptional and translational regulation suggests that regulation of Clp activity occurs through Clp complex assembly and substrate delivery.

  2. Robaglia, Christophe

    1. You have accessRestricted Access
      Biochemical Evidence for Translational Repression by Arabidopsis MicroRNAs
      Elodie Lanet, Etienne Delannoy, Rodnay Sormani, Maïna Floris, Peter Brodersen, Patrice Crété, Olivier Voinnet, Christophe Robaglia
      Plant Cell Jun 2009, 21 (6) 1762-1768; DOI: https://doi.org/10.1105/tpc.108.063412

      This work provides biochemical evidence of the association of miRNAs with translating polysomes in Arabidopsis. These data support the idea that RNA silencing mechanisms in animal and plant kingdoms are more similar than previously thought.

  3. Rollwitz, Inga

    1. You have accessRestricted Access
      The Plastidic Bile Acid Transporter 5 Is Required for the Biosynthesis of Methionine-Derived Glucosinolates in Arabidopsis thaliana
      Tamara Gigolashvili, Ruslan Yatusevich, Inga Rollwitz, Melanie Humphry, Jonathan Gershenzon, Ulf-Ingo Flügge
      Plant Cell Jun 2009, 21 (6) 1813-1829; DOI: https://doi.org/10.1105/tpc.109.066399

      This work demonstrates that the chloroplastidic BAT5 transporter is required for side chain elongation of Met-derived glucosinolates in Arabidopsis. Comparative feeding experiments of bat5 and wild-type plants using 2-keto acids and amino acids of different chain length suggested that BAT5 functions as a plastidic transporter for 2-keto acids.

  4. Rudella, Andrea

    1. You have accessRestricted Access
      Subunits of the Plastid ClpPR Protease Complex Have Differential Contributions to Embryogenesis, Plastid Biogenesis, and Plant Development in Arabidopsis
      Jitae Kim, Andrea Rudella, Verenice Ramirez Rodriguez, Boris Zybailov, Paul Dominic B. Olinares, Klaas J. van Wijk
      Plant Cell Jun 2009, 21 (6) 1669-1692; DOI: https://doi.org/10.1105/tpc.108.063784

      Mutant, microscopy, and large-scale comparative proteome analyses of Arabidopsis demonstrate a central role of the Clp protease complex in chloroplast biogenesis and protein homeostasis, with different contributions of the ClpP and ClpR subunits. Lack of transcriptional and translational regulation suggests that regulation of Clp activity occurs through Clp complex assembly and substrate delivery.

S

  1. Sandberg, Göran

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

  2. Sankaranarayanan, Rajan

    1. You have accessRestricted Access
      A Cell Wall–Degrading Esterase of Xanthomonas oryzae Requires a Unique Substrate Recognition Module for Pathogenesis on Rice
      Gudlur Aparna, Avradip Chatterjee, Ramesh V. Sonti, Rajan Sankaranarayanan
      Plant Cell Jun 2009, 21 (6) 1860-1873; DOI: https://doi.org/10.1105/tpc.109.066886

      The structural study of a rice cell wall–degrading esterase LipA from Xanthomonas oryzae pv oryzae, the causal agent of bacterial leaf blight disease, reveals a unique domain that is essential for LipA function in planta and is conserved across the phytopathogenic genus Xanthomonas.

  3. Scheel, Dierk

    1. Open Access
      The Multifunctional Enzyme CYP71B15 (PHYTOALEXIN DEFICIENT3) Converts Cysteine-Indole-3-Acetonitrile to Camalexin in the Indole-3-Acetonitrile Metabolic Network of Arabidopsis thaliana
      Christoph Böttcher, Lore Westphal, Constanze Schmotz, Elke Prade, Dierk Scheel, Erich Glawischnig
      Plant Cell Jun 2009, 21 (6) 1830-1845; DOI: https://doi.org/10.1105/tpc.109.066670

      In a comprehensive metabolomics and precursor feeding approach, a network of indole-3-acetonitrile (IAN)–derived metabolites was identified in mutants of camalexin biosynthesis. A Cys conjugate of IAN was shown to be turned over directly to camalexin and cyanide by PHYTOALEXIN DEFICIENT3, a multifunctional cytochrome P450 enzyme.

  4. Schmotz, Constanze

    1. Open Access
      The Multifunctional Enzyme CYP71B15 (PHYTOALEXIN DEFICIENT3) Converts Cysteine-Indole-3-Acetonitrile to Camalexin in the Indole-3-Acetonitrile Metabolic Network of Arabidopsis thaliana
      Christoph Böttcher, Lore Westphal, Constanze Schmotz, Elke Prade, Dierk Scheel, Erich Glawischnig
      Plant Cell Jun 2009, 21 (6) 1830-1845; DOI: https://doi.org/10.1105/tpc.109.066670

      In a comprehensive metabolomics and precursor feeding approach, a network of indole-3-acetonitrile (IAN)–derived metabolites was identified in mutants of camalexin biosynthesis. A Cys conjugate of IAN was shown to be turned over directly to camalexin and cyanide by PHYTOALEXIN DEFICIENT3, a multifunctional cytochrome P450 enzyme.

  5. Sonti, Ramesh V.

    1. You have accessRestricted Access
      A Cell Wall–Degrading Esterase of Xanthomonas oryzae Requires a Unique Substrate Recognition Module for Pathogenesis on Rice
      Gudlur Aparna, Avradip Chatterjee, Ramesh V. Sonti, Rajan Sankaranarayanan
      Plant Cell Jun 2009, 21 (6) 1860-1873; DOI: https://doi.org/10.1105/tpc.109.066886

      The structural study of a rice cell wall–degrading esterase LipA from Xanthomonas oryzae pv oryzae, the causal agent of bacterial leaf blight disease, reveals a unique domain that is essential for LipA function in planta and is conserved across the phytopathogenic genus Xanthomonas.

  6. Sormani, Rodnay

    1. You have accessRestricted Access
      Biochemical Evidence for Translational Repression by Arabidopsis MicroRNAs
      Elodie Lanet, Etienne Delannoy, Rodnay Sormani, Maïna Floris, Peter Brodersen, Patrice Crété, Olivier Voinnet, Christophe Robaglia
      Plant Cell Jun 2009, 21 (6) 1762-1768; DOI: https://doi.org/10.1105/tpc.108.063412

      This work provides biochemical evidence of the association of miRNAs with translating polysomes in Arabidopsis. These data support the idea that RNA silencing mechanisms in animal and plant kingdoms are more similar than previously thought.

  7. Suzuki, Kenji

    1. You have accessRestricted Access
      The PLASTID DIVISION1 and 2 Components of the Chloroplast Division Machinery Determine the Rate of Chloroplast Division in Land Plant Cell Differentiation
      Kumiko Okazaki, Yukihiro Kabeya, Kenji Suzuki, Toshiyuki Mori, Takanari Ichikawa, Minami Matsui, Hiromitsu Nakanishi, Shin-ya Miyagishima
      Plant Cell Jun 2009, 21 (6) 1769-1780; DOI: https://doi.org/10.1105/tpc.109.067785

      In contrast with most algae, in which chloroplast division keeps pace with cell division, land plant cells change the chloroplast division rate (i.e., size and number of chloroplasts) in accord with cell differentiation. This study suggests that acquisition of PLASTID DIVISION proteins by land plants enabled cells to change the chloroplast division rate based on cell differentiation.

T

  1. Titapiwatanakun, Boosaree

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

V

  1. van Wijk, Klaas J.

    1. You have accessRestricted Access
      Subunits of the Plastid ClpPR Protease Complex Have Differential Contributions to Embryogenesis, Plastid Biogenesis, and Plant Development in Arabidopsis
      Jitae Kim, Andrea Rudella, Verenice Ramirez Rodriguez, Boris Zybailov, Paul Dominic B. Olinares, Klaas J. van Wijk
      Plant Cell Jun 2009, 21 (6) 1669-1692; DOI: https://doi.org/10.1105/tpc.108.063784

      Mutant, microscopy, and large-scale comparative proteome analyses of Arabidopsis demonstrate a central role of the Clp protease complex in chloroplast biogenesis and protein homeostasis, with different contributions of the ClpP and ClpR subunits. Lack of transcriptional and translational regulation suggests that regulation of Clp activity occurs through Clp complex assembly and substrate delivery.

  2. Vicente-Carbajosa, Jesús

    1. You have accessRestricted Access
      A Pivotal Role of the Basic Leucine Zipper Transcription Factor bZIP53 in the Regulation of Arabidopsis Seed Maturation Gene Expression Based on Heterodimerization and Protein Complex Formation
      Rosario Alonso, Luis Oñate-Sánchez, Fridtjof Weltmeier, Andrea Ehlert, Isabel Diaz, Katrin Dietrich, Jesús Vicente-Carbajosa, Wolfgang Dröge-Laser
      Plant Cell Jun 2009, 21 (6) 1747-1761; DOI: https://doi.org/10.1105/tpc.108.062968

      This work identifies the Arabidopsis basic leucine zipper protein bZIP53 as a regulator of seed maturation genes. The mechanism of transcriptional control is defined by heterodimerization with bZIP10 or bZIP25 and ternary complex formation with ABI3.

  3. Voinnet, Olivier

    1. You have accessRestricted Access
      Biochemical Evidence for Translational Repression by Arabidopsis MicroRNAs
      Elodie Lanet, Etienne Delannoy, Rodnay Sormani, Maïna Floris, Peter Brodersen, Patrice Crété, Olivier Voinnet, Christophe Robaglia
      Plant Cell Jun 2009, 21 (6) 1762-1768; DOI: https://doi.org/10.1105/tpc.108.063412

      This work provides biochemical evidence of the association of miRNAs with translating polysomes in Arabidopsis. These data support the idea that RNA silencing mechanisms in animal and plant kingdoms are more similar than previously thought.

W

  1. Wang, Jean Y.

    1. You have accessRestricted Access
      An Auxin Gradient and Maximum in the Arabidopsis Root Apex Shown by High-Resolution Cell-Specific Analysis of IAA Distribution and Synthesis
      Sara V. Petersson, Annika I. Johansson, Mariusz Kowalczyk, Alexander Makoveychuk, Jean Y. Wang, Thomas Moritz, Markus Grebe, Philip N. Benfey, Göran Sandberg, Karin Ljung
      Plant Cell Jun 2009, 21 (6) 1659-1668; DOI: https://doi.org/10.1105/tpc.109.066480

      This study describes a novel method for cell-specific analysis of the important plant hormone auxin. Cell sorting on cell type–specific tagged lines followed by precise mass spectrometry measurements were used to produce a high-resolution auxin distribution map of the Arabidopsis root, demonstrating the existence of an auxin gradient and maximum and sites of high auxin biosynthesis rates.

  2. Weltmeier, Fridtjof

    1. You have accessRestricted Access
      A Pivotal Role of the Basic Leucine Zipper Transcription Factor bZIP53 in the Regulation of Arabidopsis Seed Maturation Gene Expression Based on Heterodimerization and Protein Complex Formation
      Rosario Alonso, Luis Oñate-Sánchez, Fridtjof Weltmeier, Andrea Ehlert, Isabel Diaz, Katrin Dietrich, Jesús Vicente-Carbajosa, Wolfgang Dröge-Laser
      Plant Cell Jun 2009, 21 (6) 1747-1761; DOI: https://doi.org/10.1105/tpc.108.062968

      This work identifies the Arabidopsis basic leucine zipper protein bZIP53 as a regulator of seed maturation genes. The mechanism of transcriptional control is defined by heterodimerization with bZIP10 or bZIP25 and ternary complex formation with ABI3.

  3. Westphal, Lore

    1. Open Access
      The Multifunctional Enzyme CYP71B15 (PHYTOALEXIN DEFICIENT3) Converts Cysteine-Indole-3-Acetonitrile to Camalexin in the Indole-3-Acetonitrile Metabolic Network of Arabidopsis thaliana
      Christoph Böttcher, Lore Westphal, Constanze Schmotz, Elke Prade, Dierk Scheel, Erich Glawischnig
      Plant Cell Jun 2009, 21 (6) 1830-1845; DOI: https://doi.org/10.1105/tpc.109.066670

      In a comprehensive metabolomics and precursor feeding approach, a network of indole-3-acetonitrile (IAN)–derived metabolites was identified in mutants of camalexin biosynthesis. A Cys conjugate of IAN was shown to be turned over directly to camalexin and cyanide by PHYTOALEXIN DEFICIENT3, a multifunctional cytochrome P450 enzyme.

  4. Whelan, James

    1. You have accessRestricted Access
      Exploring the Function-Location Nexus: Using Multiple Lines of Evidence in Defining the Subcellular Location of Plant Proteins
      A. Harvey Millar, Chris Carrie, Barry Pogson, James Whelan
      Plant Cell Jun 2009, 21 (6) 1625-1631; DOI: https://doi.org/10.1105/tpc.109.066019

X

  1. Xiao, Fangming

    1. You have accessRestricted Access
      Crystal Structure of the Complex between Pseudomonas Effector AvrPtoB and the Tomato Pto Kinase Reveals Both a Shared and a Unique Interface Compared with AvrPto-Pto
      Jing Dong, Fangming Xiao, Fenxia Fan, Lichuan Gu, Huaixing Cang, Gregory B. Martin, Jijie Chai
      Plant Cell Jun 2009, 21 (6) 1846-1859; DOI: https://doi.org/10.1105/tpc.109.066878

      Resistance to bacterial speck disease in tomato is activated upon interaction of the host Pto kinase with either of two pathogen proteins. This work provides structural insight into how a single host resistance protein can recognize two divergent bacterial effector proteins and supports a proposed mechanism in which each of these effector proteins relieves negative regulation by Pto.

Y

  1. Yakubov, Bahktiyor

    1. You have accessRestricted Access
      Mutation of the Membrane-Associated M1 Protease APM1 Results in Distinct Embryonic and Seedling Developmental Defects in Arabidopsis
      Wendy Ann Peer, Fazeeda N. Hosein, Anindita Bandyopadhyay, Srinivas N. Makam, Marisa S. Otegui, Gil-Je Lee, Joshua J. Blakeslee, Yan Cheng, Boosaree Titapiwatanakun, Bahktiyor Yakubov, Bharat Bangari, Angus S. Murphy
      Plant Cell Jun 2009, 21 (6) 1693-1721; DOI: https://doi.org/10.1105/tpc.108.059634

      Analysis of apm1 loss-of-function mutants and inducible expression/silencing transformants indicate that this M1 metallopeptidase is required for root meristem initiation during embryogenesis and meristem maintenance during seedling establishment. Meristem identity and maintenance also require auxin, and APM1 is a low-affinity target of the auxin transport inhibitor NPA.

  2. Yatusevich, Ruslan

    1. You have accessRestricted Access
      The Plastidic Bile Acid Transporter 5 Is Required for the Biosynthesis of Methionine-Derived Glucosinolates in Arabidopsis thaliana
      Tamara Gigolashvili, Ruslan Yatusevich, Inga Rollwitz, Melanie Humphry, Jonathan Gershenzon, Ulf-Ingo Flügge
      Plant Cell Jun 2009, 21 (6) 1813-1829; DOI: https://doi.org/10.1105/tpc.109.066399

      This work demonstrates that the chloroplastidic BAT5 transporter is required for side chain elongation of Met-derived glucosinolates in Arabidopsis. Comparative feeding experiments of bat5 and wild-type plants using 2-keto acids and amino acids of different chain length suggested that BAT5 functions as a plastidic transporter for 2-keto acids.

Z

  1. Zybailov, Boris

    1. You have accessRestricted Access
      Subunits of the Plastid ClpPR Protease Complex Have Differential Contributions to Embryogenesis, Plastid Biogenesis, and Plant Development in Arabidopsis
      Jitae Kim, Andrea Rudella, Verenice Ramirez Rodriguez, Boris Zybailov, Paul Dominic B. Olinares, Klaas J. van Wijk
      Plant Cell Jun 2009, 21 (6) 1669-1692; DOI: https://doi.org/10.1105/tpc.108.063784

      Mutant, microscopy, and large-scale comparative proteome analyses of Arabidopsis demonstrate a central role of the Clp protease complex in chloroplast biogenesis and protein homeostasis, with different contributions of the ClpP and ClpR subunits. Lack of transcriptional and translational regulation suggests that regulation of Clp activity occurs through Clp complex assembly and substrate delivery.

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The Plant Cell Online: 21 (6)
The Plant Cell
Vol. 21, Issue 6
June 2009
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