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Table of Contents

The Plant Cell Online: 23 (12)
Dec 2011
  • 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. Aharoni, Asaph

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  2. Alkan, Noam

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  3. Allain, Elisabeth

    1. You have accessRestricted Access
      Arabidopsis ATM and ATR Kinases Prevent Propagation of Genome Damage Caused by Telomere Dysfunction
      Simon Amiard, Annie Depeiges, Elisabeth Allain, Charles I. White, Maria Eugenia Gallego
      Plant Cell Dec 2011, 23 (12) 4254-4265; DOI: https://doi.org/10.1105/tpc.111.092387

      This article shows that unprotected telomeres in plant cells are recognized as DNA breaks and elicit a DNA damage signal that is transduced by the ATM and ATR kinases, with differing specificities for eroded and for uncapped telomeres. It finds that both kinases contribute to genomic stability by inducing programmed cell death and elimination of genetically unstable cells.

  4. Amiard, Simon

    1. You have accessRestricted Access
      Arabidopsis ATM and ATR Kinases Prevent Propagation of Genome Damage Caused by Telomere Dysfunction
      Simon Amiard, Annie Depeiges, Elisabeth Allain, Charles I. White, Maria Eugenia Gallego
      Plant Cell Dec 2011, 23 (12) 4254-4265; DOI: https://doi.org/10.1105/tpc.111.092387

      This article shows that unprotected telomeres in plant cells are recognized as DNA breaks and elicit a DNA damage signal that is transduced by the ATM and ATR kinases, with differing specificities for eroded and for uncapped telomeres. It finds that both kinases contribute to genomic stability by inducing programmed cell death and elimination of genetically unstable cells.

  5. Anstead, James A.

    1. You have accessRestricted Access
      Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation
      Daniel R. Froelich, Daniel L. Mullendore, Kåre H. Jensen, Tim J. Ross-Elliott, James A. Anstead, Gary A. Thompson, Hélène C. Pélissier, Michael Knoblauch
      Plant Cell Dec 2011, 23 (12) 4428-4445; DOI: https://doi.org/10.1105/tpc.111.093179

      Several protocols and methods were developed to study the in vivo structure, ultrastructure, and physiology of sieve tubes. The ultrastructure of sieve tubes differs significantly from what has been shown so far. The impact on phloem function is discussed.

  6. Aoki, Koh

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  7. Aung, Kyaw

    1. You have accessRestricted Access
      The Arabidopsis Tail-Anchored Protein PEROXISOMAL AND MITOCHONDRIAL DIVISION FACTOR1 Is Involved in the Morphogenesis and Proliferation of Peroxisomes and Mitochondria
      Kyaw Aung, Jianping Hu
      Plant Cell Dec 2011, 23 (12) 4446-4461; DOI: https://doi.org/10.1105/tpc.111.090142

      PMD1 was identified as a novel plant-specific coiled-coil protein that is tail anchored to the membrane of peroxisomes and mitochondria, capable of inducing the proliferation of both organelles. Its homolog, PMD2, exclusively targets to mitochondria and is involved in the morphogenesis of mitochondria.

  8. Avivi-Ragolski, Naomi

    1. You have accessRestricted Access
      Identification of Plant RAD52 Homologs and Characterization of the Arabidopsis thaliana RAD52-Like Genes
      Aviva Samach, Cathy Melamed-Bessudo, Naomi Avivi-Ragolski, Shmuel Pietrokovski, Avraham A. Levy
      Plant Cell Dec 2011, 23 (12) 4266-4279; DOI: https://doi.org/10.1105/tpc.111.091744

      This article identifies plant homologs of the DNA repair protein RAD52. Typically, plants contain two conserved genes, which duplicated early in plant evolution, code for proteins targeted to the nucleus, chloroplast, and mitochondria, and are involved in DNA damage response, homologous recombination, and fertility.

B

  1. Barakate, Abdellah

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  2. Beekwilder, Jules

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  3. Berckmans, Barbara

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  4. Berleth, Thomas

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  5. Boerjan, Wout

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  6. Book, Adam J.

    1. You have accessRestricted Access
      The RPT2 Subunit of the 26S Proteasome Directs Complex Assembly, Histone Dynamics, and Gametophyte and Sporophyte Development in Arabidopsis
      Kwang-Hee Lee, Atsushi Minami, Richard S. Marshall, Adam J. Book, Lisa M. Farmer, Joseph M. Walker, Richard D. Vierstra
      Plant Cell Dec 2011, 23 (12) 4298-4317; DOI: https://doi.org/10.1105/tpc.111.089482

      This study explores the function of two highly conserved isoforms of the Arabidopsis thaliana 26S proteasome subunit RPT2 that participate in proteasome-mediated protein turnover. The data point to a specific role for RPT2 in stem fasciation, male and female gametogenesis, and leaf, root, trichome, and pollen development, along with a common role for RP subunits in histone dynamics and nucleosome assembly.

  7. Boudolf, Véronique

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  8. Bräutigam, Andrea

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  9. Burdman, Saul

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

C

  1. Cao, Yongguo

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  2. Chopard, Jérôme

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  3. Cline, Sara

    1. You have accessRestricted Access
      Lumen Thiol Oxidoreductase1, a Disulfide Bond-Forming Catalyst, Is Required for the Assembly of Photosystem II in Arabidopsis
      Mohamed Karamoko, Sara Cline, Kevin Redding, Natividad Ruiz, Patrice P. Hamel
      Plant Cell Dec 2011, 23 (12) 4462-4475; DOI: https://doi.org/10.1105/tpc.111.089680

      This study demonstrates that Arabidopsis thaliana Lumen Thiol Oxidoreductase1 (LTO1) catalyzes disulfide bond formation in the thylakoid lumen of the chloroplast. Loss of LTO1 function yields an assembly defect in photosystem II, a photosynthetic complex that requires a disulfide bond in a structural subunit localized in the lumen.

  4. Colmsee, Christian

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  5. Criqui, Marie-Claire

    1. You have accessRestricted Access
      GIGAS CELL1, a Novel Negative Regulator of the Anaphase-Promoting Complex/Cyclosome, Is Required for Proper Mitotic Progression and Cell Fate Determination in Arabidopsis
      Eriko Iwata, Saki Ikeda, Sachihiro Matsunaga, Mariko Kurata, Yasushi Yoshioka, Marie-Claire Criqui, Pascal Genschik, Masaki Ito
      Plant Cell Dec 2011, 23 (12) 4382-4393; DOI: https://doi.org/10.1105/tpc.111.092049

      A novel plant-specific inhibitor of anaphase-promoting complex/cyclosome was identified from the gigas cell1 (gig1) mutation, which causes polyploidization of somatic cells due to ectopic endomitosis. This mutation also generated mixed-fate cells with both characters of guard cells and pavement cells, suggesting that GIG1 may have a role in cell fate determination, in addition to its role in proper mitotic progression.

  6. Czarnecki, Olaf

    1. You have accessRestricted Access
      An Arabidopsis GluTR Binding Protein Mediates Spatial Separation of 5-Aminolevulinic Acid Synthesis in Chloroplasts
      Olaf Czarnecki, Boris Hedtke, Michael Melzer, Maxi Rothbart, Andreas Richter, Yvonne Schröter, Thomas Pfannschmidt, Bernhard Grimm
      Plant Cell Dec 2011, 23 (12) 4476-4491; DOI: https://doi.org/10.1105/tpc.111.086421

      The identification and characterization of a glutamyl-tRNA reductase binding protein (GluTRBP) results in a new model for spatial separation of 5-aminolevulinic acid (ALA) formation. GluTRBP-bound GluTR is attached to the thylakoid membrane and synthesizes ALA that is likely directed into the heme-synthesizing pathway.

D

  1. Das, Pradeep

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  2. Datla, Raju

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  3. De Jaeger, Geert

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  4. Denton, Alisandra K.

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  5. De Paoli, Emanuele

    1. Open Access
      Massive Analysis of Rice Small RNAs: Mechanistic Implications of Regulated MicroRNAs and Variants for Differential Target RNA Cleavage
      Dong-Hoon Jeong, Sunhee Park, Jixian Zhai, Sai Guna Ranjan Gurazada, Emanuele De Paoli, Blake C. Meyers, Pamela J. Green
      Plant Cell Dec 2011, 23 (12) 4185-4207; DOI: https://doi.org/10.1105/tpc.111.089045

      This massive analysis of rice small RNAs evaluated annotated microRNAs (miRNAs) and identified new miRNAs and miRNAs regulated by environmental stresses. Of particular interest are miRNA family members with distinct sequences and organ-preferential expression; some of these guide differential target cleavage and provide new insight about how an agriculturally significant phenotype may be regulated.

  6. Depeiges, Annie

    1. You have accessRestricted Access
      Arabidopsis ATM and ATR Kinases Prevent Propagation of Genome Damage Caused by Telomere Dysfunction
      Simon Amiard, Annie Depeiges, Elisabeth Allain, Charles I. White, Maria Eugenia Gallego
      Plant Cell Dec 2011, 23 (12) 4254-4265; DOI: https://doi.org/10.1105/tpc.111.092387

      This article shows that unprotected telomeres in plant cells are recognized as DNA breaks and elicit a DNA damage signal that is transduced by the ATM and ATR kinases, with differing specificities for eroded and for uncapped telomeres. It finds that both kinases contribute to genomic stability by inducing programmed cell death and elimination of genetically unstable cells.

  7. De Veylder, Lieven

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  8. de Vos, Ric

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  9. De Wit, Kevin

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

E

  1. Eckardt, Nancy A.

    1. You have accessRestricted Access
      Postcards from the Rice Genome: Massive Analysis of Small RNAs in Response to Environmental Stress
      Nancy A. Eckardt
      Plant Cell Dec 2011, 23 (12) 4165; DOI: https://doi.org/10.1105/tpc.111.231211
  2. Ehrhardt, David W.

    1. Open Access
      The RootChip: An Integrated Microfluidic Chip for Plant Science
      Guido Grossmann, Woei-Jiun Guo, David W. Ehrhardt, Wolf B. Frommer, Rene V. Sit, Stephen R. Quake, Matthias Meier
      Plant Cell Dec 2011, 23 (12) 4234-4240; DOI: https://doi.org/10.1105/tpc.111.092577
  3. Eichten, Steve R.

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

F

  1. Fahnenstich, Holger

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  2. Fajardo, Diego S.

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  3. Farcot, Etienne

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  4. Farmer, Lisa M.

    1. You have accessRestricted Access
      The RPT2 Subunit of the 26S Proteasome Directs Complex Assembly, Histone Dynamics, and Gametophyte and Sporophyte Development in Arabidopsis
      Kwang-Hee Lee, Atsushi Minami, Richard S. Marshall, Adam J. Book, Lisa M. Farmer, Joseph M. Walker, Richard D. Vierstra
      Plant Cell Dec 2011, 23 (12) 4298-4317; DOI: https://doi.org/10.1105/tpc.111.089482

      This study explores the function of two highly conserved isoforms of the Arabidopsis thaliana 26S proteasome subunit RPT2 that participate in proteasome-mediated protein turnover. The data point to a specific role for RPT2 in stem fasciation, male and female gametogenesis, and leaf, root, trichome, and pollen development, along with a common role for RP subunits in histone dynamics and nucleosome assembly.

  5. Fouquet, Romain

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  6. Freeling, Michael

    1. You have accessRestricted Access
      Different Gene Families in Arabidopsis thaliana Transposed in Different Epochs and at Different Frequencies throughout the Rosids
      Margaret R. Woodhouse, Haibao Tang, Michael Freeling
      Plant Cell Dec 2011, 23 (12) 4241-4253; DOI: https://doi.org/10.1105/tpc.111.093567

      This work examines the chromosomal positional history of all genes in Arabidopsis thaliana through evolutionary time in the rosid superorder, finding that mobile gene families are under different selection pressure than syntenic gene families.

  7. Froelich, Daniel R.

    1. You have accessRestricted Access
      Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation
      Daniel R. Froelich, Daniel L. Mullendore, Kåre H. Jensen, Tim J. Ross-Elliott, James A. Anstead, Gary A. Thompson, Hélène C. Pélissier, Michael Knoblauch
      Plant Cell Dec 2011, 23 (12) 4428-4445; DOI: https://doi.org/10.1105/tpc.111.093179

      Several protocols and methods were developed to study the in vivo structure, ultrastructure, and physiology of sieve tubes. The ultrastructure of sieve tubes differs significantly from what has been shown so far. The impact on phloem function is discussed.

  8. Frommer, Wolf B.

    1. Open Access
      The RootChip: An Integrated Microfluidic Chip for Plant Science
      Guido Grossmann, Woei-Jiun Guo, David W. Ehrhardt, Wolf B. Frommer, Rene V. Sit, Stephen R. Quake, Matthias Meier
      Plant Cell Dec 2011, 23 (12) 4234-4240; DOI: https://doi.org/10.1105/tpc.111.092577

G

  1. Gallego, Maria Eugenia

    1. You have accessRestricted Access
      Arabidopsis ATM and ATR Kinases Prevent Propagation of Genome Damage Caused by Telomere Dysfunction
      Simon Amiard, Annie Depeiges, Elisabeth Allain, Charles I. White, Maria Eugenia Gallego
      Plant Cell Dec 2011, 23 (12) 4254-4265; DOI: https://doi.org/10.1105/tpc.111.092387

      This article shows that unprotected telomeres in plant cells are recognized as DNA breaks and elicit a DNA damage signal that is transduced by the ATM and ATR kinases, with differing specificities for eroded and for uncapped telomeres. It finds that both kinases contribute to genomic stability by inducing programmed cell death and elimination of genetically unstable cells.

  2. Gault, Christine M.

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  3. Gehring, Mary

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

  4. Genschik, Pascal

    1. You have accessRestricted Access
      GIGAS CELL1, a Novel Negative Regulator of the Anaphase-Promoting Complex/Cyclosome, Is Required for Proper Mitotic Progression and Cell Fate Determination in Arabidopsis
      Eriko Iwata, Saki Ikeda, Sachihiro Matsunaga, Mariko Kurata, Yasushi Yoshioka, Marie-Claire Criqui, Pascal Genschik, Masaki Ito
      Plant Cell Dec 2011, 23 (12) 4382-4393; DOI: https://doi.org/10.1105/tpc.111.092049

      A novel plant-specific inhibitor of anaphase-promoting complex/cyclosome was identified from the gigas cell1 (gig1) mutation, which causes polyploidization of somatic cells due to ectopic endomitosis. This mutation also generated mixed-fate cells with both characters of guard cells and pavement cells, suggesting that GIG1 may have a role in cell fate determination, in addition to its role in proper mitotic progression.

  5. Godin, Christophe

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  6. Goldie, Alison

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  7. Gómez, Elisa

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  8. Green, Pamela J.

    1. Open Access
      Massive Analysis of Rice Small RNAs: Mechanistic Implications of Regulated MicroRNAs and Variants for Differential Target RNA Cleavage
      Dong-Hoon Jeong, Sunhee Park, Jixian Zhai, Sai Guna Ranjan Gurazada, Emanuele De Paoli, Blake C. Meyers, Pamela J. Green
      Plant Cell Dec 2011, 23 (12) 4185-4207; DOI: https://doi.org/10.1105/tpc.111.089045

      This massive analysis of rice small RNAs evaluated annotated microRNAs (miRNAs) and identified new miRNAs and miRNAs regulated by environmental stresses. Of particular interest are miRNA family members with distinct sequences and organ-preferential expression; some of these guide differential target cleavage and provide new insight about how an agriculturally significant phenotype may be regulated.

  9. Grimm, Bernhard

    1. You have accessRestricted Access
      An Arabidopsis GluTR Binding Protein Mediates Spatial Separation of 5-Aminolevulinic Acid Synthesis in Chloroplasts
      Olaf Czarnecki, Boris Hedtke, Michael Melzer, Maxi Rothbart, Andreas Richter, Yvonne Schröter, Thomas Pfannschmidt, Bernhard Grimm
      Plant Cell Dec 2011, 23 (12) 4476-4491; DOI: https://doi.org/10.1105/tpc.111.086421

      The identification and characterization of a glutamyl-tRNA reductase binding protein (GluTRBP) results in a new model for spatial separation of 5-aminolevulinic acid (ALA) formation. GluTRBP-bound GluTR is attached to the thylakoid membrane and synthesizes ALA that is likely directed into the heme-synthesizing pathway.

  10. Grossmann, Guido

    1. Open Access
      The RootChip: An Integrated Microfluidic Chip for Plant Science
      Guido Grossmann, Woei-Jiun Guo, David W. Ehrhardt, Wolf B. Frommer, Rene V. Sit, Stephen R. Quake, Matthias Meier
      Plant Cell Dec 2011, 23 (12) 4234-4240; DOI: https://doi.org/10.1105/tpc.111.092577
  11. Guo, Woei-Jiun

    1. Open Access
      The RootChip: An Integrated Microfluidic Chip for Plant Science
      Guido Grossmann, Woei-Jiun Guo, David W. Ehrhardt, Wolf B. Frommer, Rene V. Sit, Stephen R. Quake, Matthias Meier
      Plant Cell Dec 2011, 23 (12) 4234-4240; DOI: https://doi.org/10.1105/tpc.111.092577
  12. Gurazada, Sai Guna Ranjan

    1. Open Access
      Massive Analysis of Rice Small RNAs: Mechanistic Implications of Regulated MicroRNAs and Variants for Differential Target RNA Cleavage
      Dong-Hoon Jeong, Sunhee Park, Jixian Zhai, Sai Guna Ranjan Gurazada, Emanuele De Paoli, Blake C. Meyers, Pamela J. Green
      Plant Cell Dec 2011, 23 (12) 4185-4207; DOI: https://doi.org/10.1105/tpc.111.089045

      This massive analysis of rice small RNAs evaluated annotated microRNAs (miRNAs) and identified new miRNAs and miRNAs regulated by environmental stresses. Of particular interest are miRNA family members with distinct sequences and organ-preferential expression; some of these guide differential target cleavage and provide new insight about how an agriculturally significant phenotype may be regulated.

H

  1. Halpin, Claire

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  2. Hamel, Patrice P.

    1. You have accessRestricted Access
      Lumen Thiol Oxidoreductase1, a Disulfide Bond-Forming Catalyst, Is Required for the Assembly of Photosystem II in Arabidopsis
      Mohamed Karamoko, Sara Cline, Kevin Redding, Natividad Ruiz, Patrice P. Hamel
      Plant Cell Dec 2011, 23 (12) 4462-4475; DOI: https://doi.org/10.1105/tpc.111.089680

      This study demonstrates that Arabidopsis thaliana Lumen Thiol Oxidoreductase1 (LTO1) catalyzes disulfide bond formation in the thylakoid lumen of the chloroplast. Loss of LTO1 function yields an assembly defect in photosystem II, a photosynthetic complex that requires a disulfide bond in a structural subunit localized in the lumen.

  3. Hancock, Robert D.

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  4. Hedtke, Boris

    1. You have accessRestricted Access
      An Arabidopsis GluTR Binding Protein Mediates Spatial Separation of 5-Aminolevulinic Acid Synthesis in Chloroplasts
      Olaf Czarnecki, Boris Hedtke, Michael Melzer, Maxi Rothbart, Andreas Richter, Yvonne Schröter, Thomas Pfannschmidt, Bernhard Grimm
      Plant Cell Dec 2011, 23 (12) 4476-4491; DOI: https://doi.org/10.1105/tpc.111.086421

      The identification and characterization of a glutamyl-tRNA reductase binding protein (GluTRBP) results in a new model for spatial separation of 5-aminolevulinic acid (ALA) formation. GluTRBP-bound GluTR is attached to the thylakoid membrane and synthesizes ALA that is likely directed into the heme-synthesizing pathway.

  5. Heyman, Jefri

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  6. Hofmann, Nancy R.

    1. You have accessRestricted Access
      A Case for Spatial Regulation in Tetrapyrrole Biosynthesis
      Nancy R. Hofmann
      Plant Cell Dec 2011, 23 (12) 4167; DOI: https://doi.org/10.1105/tpc.111.231212
  7. Hu, Jianping

    1. You have accessRestricted Access
      The Arabidopsis Tail-Anchored Protein PEROXISOMAL AND MITOCHONDRIAL DIVISION FACTOR1 Is Involved in the Morphogenesis and Proliferation of Peroxisomes and Mitochondria
      Kyaw Aung, Jianping Hu
      Plant Cell Dec 2011, 23 (12) 4446-4461; DOI: https://doi.org/10.1105/tpc.111.090142

      PMD1 was identified as a novel plant-specific coiled-coil protein that is tail anchored to the membrane of peroxisomes and mitochondria, capable of inducing the proliferation of both organelles. Its homolog, PMD2, exclusively targets to mitochondria and is involved in the morphogenesis of mitochondria.

  8. Hueros, Gregorio

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  9. Hunter, William N.

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

I

  1. Iijima, Yoko

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  2. Ikeda, Saki

    1. You have accessRestricted Access
      GIGAS CELL1, a Novel Negative Regulator of the Anaphase-Promoting Complex/Cyclosome, Is Required for Proper Mitotic Progression and Cell Fate Determination in Arabidopsis
      Eriko Iwata, Saki Ikeda, Sachihiro Matsunaga, Mariko Kurata, Yasushi Yoshioka, Marie-Claire Criqui, Pascal Genschik, Masaki Ito
      Plant Cell Dec 2011, 23 (12) 4382-4393; DOI: https://doi.org/10.1105/tpc.111.092049

      A novel plant-specific inhibitor of anaphase-promoting complex/cyclosome was identified from the gigas cell1 (gig1) mutation, which causes polyploidization of somatic cells due to ectopic endomitosis. This mutation also generated mixed-fate cells with both characters of guard cells and pavement cells, suggesting that GIG1 may have a role in cell fate determination, in addition to its role in proper mitotic progression.

  3. Itkin, Maxim

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  4. Ito, Masaki

    1. You have accessRestricted Access
      GIGAS CELL1, a Novel Negative Regulator of the Anaphase-Promoting Complex/Cyclosome, Is Required for Proper Mitotic Progression and Cell Fate Determination in Arabidopsis
      Eriko Iwata, Saki Ikeda, Sachihiro Matsunaga, Mariko Kurata, Yasushi Yoshioka, Marie-Claire Criqui, Pascal Genschik, Masaki Ito
      Plant Cell Dec 2011, 23 (12) 4382-4393; DOI: https://doi.org/10.1105/tpc.111.092049

      A novel plant-specific inhibitor of anaphase-promoting complex/cyclosome was identified from the gigas cell1 (gig1) mutation, which causes polyploidization of somatic cells due to ectopic endomitosis. This mutation also generated mixed-fate cells with both characters of guard cells and pavement cells, suggesting that GIG1 may have a role in cell fate determination, in addition to its role in proper mitotic progression.

  5. Ito, Yukihiro

    1. Open Access
      Positive Autoregulation of a KNOX Gene Is Essential for Shoot Apical Meristem Maintenance in Rice
      Katsutoshi Tsuda, Yukihiro Ito, Yutaka Sato, Nori Kurata
      Plant Cell Dec 2011, 23 (12) 4368-4381; DOI: https://doi.org/10.1105/tpc.111.090050

      This work reveals that rice KNOX genes OSH1 and OSH15 are required for shoot apical meristem (SAM) formation and maintenance and that KNOX gene expression is positively and directly regulated by OSH1 through evolutionarily conserved cis-elements. This is thought to be a novel mechanism that is indispensable for self-maintenance of the SAM.

  6. Iwata, Eriko

    1. You have accessRestricted Access
      GIGAS CELL1, a Novel Negative Regulator of the Anaphase-Promoting Complex/Cyclosome, Is Required for Proper Mitotic Progression and Cell Fate Determination in Arabidopsis
      Eriko Iwata, Saki Ikeda, Sachihiro Matsunaga, Mariko Kurata, Yasushi Yoshioka, Marie-Claire Criqui, Pascal Genschik, Masaki Ito
      Plant Cell Dec 2011, 23 (12) 4382-4393; DOI: https://doi.org/10.1105/tpc.111.092049

      A novel plant-specific inhibitor of anaphase-promoting complex/cyclosome was identified from the gigas cell1 (gig1) mutation, which causes polyploidization of somatic cells due to ectopic endomitosis. This mutation also generated mixed-fate cells with both characters of guard cells and pavement cells, suggesting that GIG1 may have a role in cell fate determination, in addition to its role in proper mitotic progression.

J

  1. Jensen, KÃ¥re H.

    1. You have accessRestricted Access
      Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation
      Daniel R. Froelich, Daniel L. Mullendore, Kåre H. Jensen, Tim J. Ross-Elliott, James A. Anstead, Gary A. Thompson, Hélène C. Pélissier, Michael Knoblauch
      Plant Cell Dec 2011, 23 (12) 4428-4445; DOI: https://doi.org/10.1105/tpc.111.093179

      Several protocols and methods were developed to study the in vivo structure, ultrastructure, and physiology of sieve tubes. The ultrastructure of sieve tubes differs significantly from what has been shown so far. The impact on phloem function is discussed.

  2. Jeong, Dong-Hoon

    1. Open Access
      Massive Analysis of Rice Small RNAs: Mechanistic Implications of Regulated MicroRNAs and Variants for Differential Target RNA Cleavage
      Dong-Hoon Jeong, Sunhee Park, Jixian Zhai, Sai Guna Ranjan Gurazada, Emanuele De Paoli, Blake C. Meyers, Pamela J. Green
      Plant Cell Dec 2011, 23 (12) 4185-4207; DOI: https://doi.org/10.1105/tpc.111.089045

      This massive analysis of rice small RNAs evaluated annotated microRNAs (miRNAs) and identified new miRNAs and miRNAs regulated by environmental stresses. Of particular interest are miRNA family members with distinct sequences and organ-preferential expression; some of these guide differential target cleavage and provide new insight about how an agriculturally significant phenotype may be regulated.

K

  1. Kamei, Claire Lessa Alvim

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  2. Karamoko, Mohamed

    1. You have accessRestricted Access
      Lumen Thiol Oxidoreductase1, a Disulfide Bond-Forming Catalyst, Is Required for the Assembly of Photosystem II in Arabidopsis
      Mohamed Karamoko, Sara Cline, Kevin Redding, Natividad Ruiz, Patrice P. Hamel
      Plant Cell Dec 2011, 23 (12) 4462-4475; DOI: https://doi.org/10.1105/tpc.111.089680

      This study demonstrates that Arabidopsis thaliana Lumen Thiol Oxidoreductase1 (LTO1) catalyzes disulfide bond formation in the thylakoid lumen of the chloroplast. Loss of LTO1 function yields an assembly defect in photosystem II, a photosynthetic complex that requires a disulfide bond in a structural subunit localized in the lumen.

  3. Knoblauch, Michael

    1. You have accessRestricted Access
      Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation
      Daniel R. Froelich, Daniel L. Mullendore, Kåre H. Jensen, Tim J. Ross-Elliott, James A. Anstead, Gary A. Thompson, Hélène C. Pélissier, Michael Knoblauch
      Plant Cell Dec 2011, 23 (12) 4428-4445; DOI: https://doi.org/10.1105/tpc.111.093179

      Several protocols and methods were developed to study the in vivo structure, ultrastructure, and physiology of sieve tubes. The ultrastructure of sieve tubes differs significantly from what has been shown so far. The impact on phloem function is discussed.

  4. Koncz, Csaba

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  5. Kurata, Mariko

    1. You have accessRestricted Access
      GIGAS CELL1, a Novel Negative Regulator of the Anaphase-Promoting Complex/Cyclosome, Is Required for Proper Mitotic Progression and Cell Fate Determination in Arabidopsis
      Eriko Iwata, Saki Ikeda, Sachihiro Matsunaga, Mariko Kurata, Yasushi Yoshioka, Marie-Claire Criqui, Pascal Genschik, Masaki Ito
      Plant Cell Dec 2011, 23 (12) 4382-4393; DOI: https://doi.org/10.1105/tpc.111.092049

      A novel plant-specific inhibitor of anaphase-promoting complex/cyclosome was identified from the gigas cell1 (gig1) mutation, which causes polyploidization of somatic cells due to ectopic endomitosis. This mutation also generated mixed-fate cells with both characters of guard cells and pavement cells, suggesting that GIG1 may have a role in cell fate determination, in addition to its role in proper mitotic progression.

  6. Kurata, Nori

    1. Open Access
      Positive Autoregulation of a KNOX Gene Is Essential for Shoot Apical Meristem Maintenance in Rice
      Katsutoshi Tsuda, Yukihiro Ito, Yutaka Sato, Nori Kurata
      Plant Cell Dec 2011, 23 (12) 4368-4381; DOI: https://doi.org/10.1105/tpc.111.090050

      This work reveals that rice KNOX genes OSH1 and OSH15 are required for shoot apical meristem (SAM) formation and maintenance and that KNOX gene expression is positively and directly regulated by OSH1 through evolutionarily conserved cis-elements. This is thought to be a novel mechanism that is indispensable for self-maintenance of the SAM.

L

  1. Lapierre, Catherine

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  2. La Rota, Camilo

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  3. Laux, Thomas

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  4. Lee, Kwang-Hee

    1. You have accessRestricted Access
      The RPT2 Subunit of the 26S Proteasome Directs Complex Assembly, Histone Dynamics, and Gametophyte and Sporophyte Development in Arabidopsis
      Kwang-Hee Lee, Atsushi Minami, Richard S. Marshall, Adam J. Book, Lisa M. Farmer, Joseph M. Walker, Richard D. Vierstra
      Plant Cell Dec 2011, 23 (12) 4298-4317; DOI: https://doi.org/10.1105/tpc.111.089482

      This study explores the function of two highly conserved isoforms of the Arabidopsis thaliana 26S proteasome subunit RPT2 that participate in proteasome-mediated protein turnover. The data point to a specific role for RPT2 in stem fasciation, male and female gametogenesis, and leaf, root, trichome, and pollen development, along with a common role for RP subunits in histone dynamics and nucleosome assembly.

  5. Levy, Avraham A.

    1. You have accessRestricted Access
      Identification of Plant RAD52 Homologs and Characterization of the Arabidopsis thaliana RAD52-Like Genes
      Aviva Samach, Cathy Melamed-Bessudo, Naomi Avivi-Ragolski, Shmuel Pietrokovski, Avraham A. Levy
      Plant Cell Dec 2011, 23 (12) 4266-4279; DOI: https://doi.org/10.1105/tpc.111.091744

      This article identifies plant homologs of the DNA repair protein RAD52. Typically, plants contain two conserved genes, which duplicated early in plant evolution, code for proteins targeted to the nucleus, chloroplast, and mitochondria, and are involved in DNA damage response, homologous recombination, and fertility.

  6. Li, Jiejie

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

  7. Liu, Xiaomin

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

M

  1. Mach, Jennifer

    1. You have accessRestricted Access
      Large-Scale RNA Sequencing to Identify Maize Genes with Parent-of-Origin Expression Effects
      Jennifer Mach
      Plant Cell Dec 2011, 23 (12) 4166; DOI: https://doi.org/10.1105/tpc.111.231210
  2. Makarevitch, Irina

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

  3. Malitsky, Sergey

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  4. Mao, Tonglin

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

  5. Marshall, David

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  6. Marshall, Richard S.

    1. You have accessRestricted Access
      The RPT2 Subunit of the 26S Proteasome Directs Complex Assembly, Histone Dynamics, and Gametophyte and Sporophyte Development in Arabidopsis
      Kwang-Hee Lee, Atsushi Minami, Richard S. Marshall, Adam J. Book, Lisa M. Farmer, Joseph M. Walker, Richard D. Vierstra
      Plant Cell Dec 2011, 23 (12) 4298-4317; DOI: https://doi.org/10.1105/tpc.111.089482

      This study explores the function of two highly conserved isoforms of the Arabidopsis thaliana 26S proteasome subunit RPT2 that participate in proteasome-mediated protein turnover. The data point to a specific role for RPT2 in stem fasciation, male and female gametogenesis, and leaf, root, trichome, and pollen development, along with a common role for RP subunits in histone dynamics and nucleosome assembly.

  7. Martin, Federico

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  8. Masini, Laura

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  9. Matsunaga, Sachihiro

    1. You have accessRestricted Access
      GIGAS CELL1, a Novel Negative Regulator of the Anaphase-Promoting Complex/Cyclosome, Is Required for Proper Mitotic Progression and Cell Fate Determination in Arabidopsis
      Eriko Iwata, Saki Ikeda, Sachihiro Matsunaga, Mariko Kurata, Yasushi Yoshioka, Marie-Claire Criqui, Pascal Genschik, Masaki Ito
      Plant Cell Dec 2011, 23 (12) 4382-4393; DOI: https://doi.org/10.1105/tpc.111.092049

      A novel plant-specific inhibitor of anaphase-promoting complex/cyclosome was identified from the gigas cell1 (gig1) mutation, which causes polyploidization of somatic cells due to ectopic endomitosis. This mutation also generated mixed-fate cells with both characters of guard cells and pavement cells, suggesting that GIG1 may have a role in cell fate determination, in addition to its role in proper mitotic progression.

  10. Meier, Matthias

    1. Open Access
      The RootChip: An Integrated Microfluidic Chip for Plant Science
      Guido Grossmann, Woei-Jiun Guo, David W. Ehrhardt, Wolf B. Frommer, Rene V. Sit, Stephen R. Quake, Matthias Meier
      Plant Cell Dec 2011, 23 (12) 4234-4240; DOI: https://doi.org/10.1105/tpc.111.092577
  11. Meir, Sagit

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  12. Melamed-Bessudo, Cathy

    1. You have accessRestricted Access
      Identification of Plant RAD52 Homologs and Characterization of the Arabidopsis thaliana RAD52-Like Genes
      Aviva Samach, Cathy Melamed-Bessudo, Naomi Avivi-Ragolski, Shmuel Pietrokovski, Avraham A. Levy
      Plant Cell Dec 2011, 23 (12) 4266-4279; DOI: https://doi.org/10.1105/tpc.111.091744

      This article identifies plant homologs of the DNA repair protein RAD52. Typically, plants contain two conserved genes, which duplicated early in plant evolution, code for proteins targeted to the nucleus, chloroplast, and mitochondria, and are involved in DNA damage response, homologous recombination, and fertility.

  13. Melzer, Michael

    1. You have accessRestricted Access
      An Arabidopsis GluTR Binding Protein Mediates Spatial Separation of 5-Aminolevulinic Acid Synthesis in Chloroplasts
      Olaf Czarnecki, Boris Hedtke, Michael Melzer, Maxi Rothbart, Andreas Richter, Yvonne Schröter, Thomas Pfannschmidt, Bernhard Grimm
      Plant Cell Dec 2011, 23 (12) 4476-4491; DOI: https://doi.org/10.1105/tpc.111.086421

      The identification and characterization of a glutamyl-tRNA reductase binding protein (GluTRBP) results in a new model for spatial separation of 5-aminolevulinic acid (ALA) formation. GluTRBP-bound GluTR is attached to the thylakoid membrane and synthesizes ALA that is likely directed into the heme-synthesizing pathway.

  14. Meyers, Blake C.

    1. Open Access
      Massive Analysis of Rice Small RNAs: Mechanistic Implications of Regulated MicroRNAs and Variants for Differential Target RNA Cleavage
      Dong-Hoon Jeong, Sunhee Park, Jixian Zhai, Sai Guna Ranjan Gurazada, Emanuele De Paoli, Blake C. Meyers, Pamela J. Green
      Plant Cell Dec 2011, 23 (12) 4185-4207; DOI: https://doi.org/10.1105/tpc.111.089045

      This massive analysis of rice small RNAs evaluated annotated microRNAs (miRNAs) and identified new miRNAs and miRNAs regulated by environmental stresses. Of particular interest are miRNA family members with distinct sequences and organ-preferential expression; some of these guide differential target cleavage and provide new insight about how an agriculturally significant phenotype may be regulated.

  15. Minami, Atsushi

    1. You have accessRestricted Access
      The RPT2 Subunit of the 26S Proteasome Directs Complex Assembly, Histone Dynamics, and Gametophyte and Sporophyte Development in Arabidopsis
      Kwang-Hee Lee, Atsushi Minami, Richard S. Marshall, Adam J. Book, Lisa M. Farmer, Joseph M. Walker, Richard D. Vierstra
      Plant Cell Dec 2011, 23 (12) 4298-4317; DOI: https://doi.org/10.1105/tpc.111.089482

      This study explores the function of two highly conserved isoforms of the Arabidopsis thaliana 26S proteasome subunit RPT2 that participate in proteasome-mediated protein turnover. The data point to a specific role for RPT2 in stem fasciation, male and female gametogenesis, and leaf, root, trichome, and pollen development, along with a common role for RP subunits in histone dynamics and nucleosome assembly.

  16. Monéger, Françoise

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  17. Morreel, Kris

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  18. Mullendore, Daniel L.

    1. You have accessRestricted Access
      Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation
      Daniel R. Froelich, Daniel L. Mullendore, Kåre H. Jensen, Tim J. Ross-Elliott, James A. Anstead, Gary A. Thompson, Hélène C. Pélissier, Michael Knoblauch
      Plant Cell Dec 2011, 23 (12) 4428-4445; DOI: https://doi.org/10.1105/tpc.111.093179

      Several protocols and methods were developed to study the in vivo structure, ultrastructure, and physiology of sieve tubes. The ultrastructure of sieve tubes differs significantly from what has been shown so far. The impact on phloem function is discussed.

  19. Mustroph, Angelika

    1. You have accessRestricted Access
      Plant Oxygen Sensing Is Mediated by the N-End Rule Pathway: A Milestone in Plant Anaerobiosis
      Rashmi Sasidharan, Angelika Mustroph
      Plant Cell Dec 2011, 23 (12) 4173-4183; DOI: https://doi.org/10.1105/tpc.111.093880

N

  1. Ning, Jing

    1. You have accessRestricted Access
      Increased Leaf Angle1, a Raf-Like MAPKKK That Interacts with a Nuclear Protein Family, Regulates Mechanical Tissue Formation in the Lamina Joint of Rice
      Jing Ning, Baocai Zhang, Nili Wang, Yihua Zhou, Lizhong Xiong
      Plant Cell Dec 2011, 23 (12) 4334-4347; DOI: https://doi.org/10.1105/tpc.111.093419

      This work characterizes ILA1, a kinase protein that regulates leaf angle through affecting mechanical properties at the leaf collar. It finds that ILA1 interacts with a previously undiscovered family of proteins whose function is unknown and mediates a different pathway than other reported kinases.

O

  1. Otegui, Marisa S.

    1. You have accessRestricted Access
      Reply: Internal Membranes in Maize Aleurone Protein Storage Vacuoles: Beyond Autophagy
      Francisca C. Reyes, Marisa S. Otegui, Richard Vierstra
      Plant Cell Dec 2011, 23 (12) 4171-4172; DOI: https://doi.org/10.1105/tpc.111.231240

P

  1. Paindavoine, Sandrine

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  2. Park, Sunhee

    1. Open Access
      Massive Analysis of Rice Small RNAs: Mechanistic Implications of Regulated MicroRNAs and Variants for Differential Target RNA Cleavage
      Dong-Hoon Jeong, Sunhee Park, Jixian Zhai, Sai Guna Ranjan Gurazada, Emanuele De Paoli, Blake C. Meyers, Pamela J. Green
      Plant Cell Dec 2011, 23 (12) 4185-4207; DOI: https://doi.org/10.1105/tpc.111.089045

      This massive analysis of rice small RNAs evaluated annotated microRNAs (miRNAs) and identified new miRNAs and miRNAs regulated by environmental stresses. Of particular interest are miRNA family members with distinct sequences and organ-preferential expression; some of these guide differential target cleavage and provide new insight about how an agriculturally significant phenotype may be regulated.

  3. Pélissier, Hélène C.

    1. You have accessRestricted Access
      Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation
      Daniel R. Froelich, Daniel L. Mullendore, Kåre H. Jensen, Tim J. Ross-Elliott, James A. Anstead, Gary A. Thompson, Hélène C. Pélissier, Michael Knoblauch
      Plant Cell Dec 2011, 23 (12) 4428-4445; DOI: https://doi.org/10.1105/tpc.111.093179

      Several protocols and methods were developed to study the in vivo structure, ultrastructure, and physiology of sieve tubes. The ultrastructure of sieve tubes differs significantly from what has been shown so far. The impact on phloem function is discussed.

  4. Pfannschmidt, Thomas

    1. You have accessRestricted Access
      An Arabidopsis GluTR Binding Protein Mediates Spatial Separation of 5-Aminolevulinic Acid Synthesis in Chloroplasts
      Olaf Czarnecki, Boris Hedtke, Michael Melzer, Maxi Rothbart, Andreas Richter, Yvonne Schröter, Thomas Pfannschmidt, Bernhard Grimm
      Plant Cell Dec 2011, 23 (12) 4476-4491; DOI: https://doi.org/10.1105/tpc.111.086421

      The identification and characterization of a glutamyl-tRNA reductase binding protein (GluTRBP) results in a new model for spatial separation of 5-aminolevulinic acid (ALA) formation. GluTRBP-bound GluTR is attached to the thylakoid membrane and synthesizes ALA that is likely directed into the heme-synthesizing pathway.

  5. Pick, Thea R.

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  6. Pieruschka, Roland

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  7. Pietrokovski, Shmuel

    1. You have accessRestricted Access
      Identification of Plant RAD52 Homologs and Characterization of the Arabidopsis thaliana RAD52-Like Genes
      Aviva Samach, Cathy Melamed-Bessudo, Naomi Avivi-Ragolski, Shmuel Pietrokovski, Avraham A. Levy
      Plant Cell Dec 2011, 23 (12) 4266-4279; DOI: https://doi.org/10.1105/tpc.111.091744

      This article identifies plant homologs of the DNA repair protein RAD52. Typically, plants contain two conserved genes, which duplicated early in plant evolution, code for proteins targeted to the nucleus, chloroplast, and mitochondria, and are involved in DNA damage response, homologous recombination, and fertility.

  8. Policht, Tyler

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  9. Prusky, Dov

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

Q

  1. Qin, Tao

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

  2. Quake, Stephen R.

    1. Open Access
      The RootChip: An Integrated Microfluidic Chip for Plant Science
      Guido Grossmann, Woei-Jiun Guo, David W. Ehrhardt, Wolf B. Frommer, Rene V. Sit, Stephen R. Quake, Matthias Meier
      Plant Cell Dec 2011, 23 (12) 4234-4240; DOI: https://doi.org/10.1105/tpc.111.092577

R

  1. Rascher, Uwe

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  2. Redding, Kevin

    1. You have accessRestricted Access
      Lumen Thiol Oxidoreductase1, a Disulfide Bond-Forming Catalyst, Is Required for the Assembly of Photosystem II in Arabidopsis
      Mohamed Karamoko, Sara Cline, Kevin Redding, Natividad Ruiz, Patrice P. Hamel
      Plant Cell Dec 2011, 23 (12) 4462-4475; DOI: https://doi.org/10.1105/tpc.111.089680

      This study demonstrates that Arabidopsis thaliana Lumen Thiol Oxidoreductase1 (LTO1) catalyzes disulfide bond formation in the thylakoid lumen of the chloroplast. Loss of LTO1 function yields an assembly defect in photosystem II, a photosynthetic complex that requires a disulfide bond in a structural subunit localized in the lumen.

  3. Ren, Maozhi

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  4. Reyes, Francisca C.

    1. You have accessRestricted Access
      Reply: Internal Membranes in Maize Aleurone Protein Storage Vacuoles: Beyond Autophagy
      Francisca C. Reyes, Marisa S. Otegui, Richard Vierstra
      Plant Cell Dec 2011, 23 (12) 4171-4172; DOI: https://doi.org/10.1105/tpc.111.231240
  5. Richter, Andreas

    1. You have accessRestricted Access
      An Arabidopsis GluTR Binding Protein Mediates Spatial Separation of 5-Aminolevulinic Acid Synthesis in Chloroplasts
      Olaf Czarnecki, Boris Hedtke, Michael Melzer, Maxi Rothbart, Andreas Richter, Yvonne Schröter, Thomas Pfannschmidt, Bernhard Grimm
      Plant Cell Dec 2011, 23 (12) 4476-4491; DOI: https://doi.org/10.1105/tpc.111.086421

      The identification and characterization of a glutamyl-tRNA reductase binding protein (GluTRBP) results in a new model for spatial separation of 5-aminolevulinic acid (ALA) formation. GluTRBP-bound GluTR is attached to the thylakoid membrane and synthesizes ALA that is likely directed into the heme-synthesizing pathway.

  6. Rogachev, Ilana

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  7. Rogers, John C.

    1. You have accessRestricted Access
      Internal Membranes in Maize Aleurone Protein Storage Vacuoles: Beyond Autophagy
      John C. Rogers
      Plant Cell Dec 2011, 23 (12) 4168-4171; DOI: https://doi.org/10.1105/tpc.111.092551
  8. Rosenberg, Tally

    1. You have accessRestricted Access
      GLYCOALKALOID METABOLISM1 Is Required for Steroidal Alkaloid Glycosylation and Prevention of Phytotoxicity in Tomato
      Maxim Itkin, Ilana Rogachev, Noam Alkan, Tally Rosenberg, Sergey Malitsky, Laura Masini, Sagit Meir, Yoko Iijima, Koh Aoki, Ric de Vos, Dov Prusky, Saul Burdman, Jules Beekwilder, Asaph Aharoni
      Plant Cell Dec 2011, 23 (12) 4507-4525; DOI: https://doi.org/10.1105/tpc.111.088732

      Steroidal alkaloids (SAs) are specialized metabolites found in members of the Solanaceae family that provide plants with a chemical barrier against a broad range of pathogens. In this study, the role of GLYCOALKALOID METABOLISM1 (GAME1) in the biosynthesis of tomato SAs was revealed, highlighting the importance of GAME1 in SA glycosylation and in reducing the toxicity of SA metabolites to the plant cell.

  9. Ross-Elliott, Tim J.

    1. You have accessRestricted Access
      Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation
      Daniel R. Froelich, Daniel L. Mullendore, Kåre H. Jensen, Tim J. Ross-Elliott, James A. Anstead, Gary A. Thompson, Hélène C. Pélissier, Michael Knoblauch
      Plant Cell Dec 2011, 23 (12) 4428-4445; DOI: https://doi.org/10.1105/tpc.111.093179

      Several protocols and methods were developed to study the in vivo structure, ultrastructure, and physiology of sieve tubes. The ultrastructure of sieve tubes differs significantly from what has been shown so far. The impact on phloem function is discussed.

  10. Rothbart, Maxi

    1. You have accessRestricted Access
      An Arabidopsis GluTR Binding Protein Mediates Spatial Separation of 5-Aminolevulinic Acid Synthesis in Chloroplasts
      Olaf Czarnecki, Boris Hedtke, Michael Melzer, Maxi Rothbart, Andreas Richter, Yvonne Schröter, Thomas Pfannschmidt, Bernhard Grimm
      Plant Cell Dec 2011, 23 (12) 4476-4491; DOI: https://doi.org/10.1105/tpc.111.086421

      The identification and characterization of a glutamyl-tRNA reductase binding protein (GluTRBP) results in a new model for spatial separation of 5-aminolevulinic acid (ALA) formation. GluTRBP-bound GluTR is attached to the thylakoid membrane and synthesizes ALA that is likely directed into the heme-synthesizing pathway.

  11. Rozier, Frédérique

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  12. Ruiz, Natividad

    1. You have accessRestricted Access
      Lumen Thiol Oxidoreductase1, a Disulfide Bond-Forming Catalyst, Is Required for the Assembly of Photosystem II in Arabidopsis
      Mohamed Karamoko, Sara Cline, Kevin Redding, Natividad Ruiz, Patrice P. Hamel
      Plant Cell Dec 2011, 23 (12) 4462-4475; DOI: https://doi.org/10.1105/tpc.111.089680

      This study demonstrates that Arabidopsis thaliana Lumen Thiol Oxidoreductase1 (LTO1) catalyzes disulfide bond formation in the thylakoid lumen of the chloroplast. Loss of LTO1 function yields an assembly defect in photosystem II, a photosynthetic complex that requires a disulfide bond in a structural subunit localized in the lumen.

S

  1. Samach, Aviva

    1. You have accessRestricted Access
      Identification of Plant RAD52 Homologs and Characterization of the Arabidopsis thaliana RAD52-Like Genes
      Aviva Samach, Cathy Melamed-Bessudo, Naomi Avivi-Ragolski, Shmuel Pietrokovski, Avraham A. Levy
      Plant Cell Dec 2011, 23 (12) 4266-4279; DOI: https://doi.org/10.1105/tpc.111.091744

      This article identifies plant homologs of the DNA repair protein RAD52. Typically, plants contain two conserved genes, which duplicated early in plant evolution, code for proteins targeted to the nucleus, chloroplast, and mitochondria, and are involved in DNA damage response, homologous recombination, and fertility.

  2. Sasidharan, Rashmi

    1. You have accessRestricted Access
      Plant Oxygen Sensing Is Mediated by the N-End Rule Pathway: A Milestone in Plant Anaerobiosis
      Rashmi Sasidharan, Angelika Mustroph
      Plant Cell Dec 2011, 23 (12) 4173-4183; DOI: https://doi.org/10.1105/tpc.111.093880
  3. Sato, Yutaka

    1. Open Access
      Positive Autoregulation of a KNOX Gene Is Essential for Shoot Apical Meristem Maintenance in Rice
      Katsutoshi Tsuda, Yukihiro Ito, Yutaka Sato, Nori Kurata
      Plant Cell Dec 2011, 23 (12) 4368-4381; DOI: https://doi.org/10.1105/tpc.111.090050

      This work reveals that rice KNOX genes OSH1 and OSH15 are required for shoot apical meristem (SAM) formation and maintenance and that KNOX gene expression is positively and directly regulated by OSH1 through evolutionarily conserved cis-elements. This is thought to be a novel mechanism that is indispensable for self-maintenance of the SAM.

  4. Schlüter, Urte

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  5. Schnable, Patrick S.

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

  6. Scholz, Uwe

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  7. Schröter, Yvonne

    1. You have accessRestricted Access
      An Arabidopsis GluTR Binding Protein Mediates Spatial Separation of 5-Aminolevulinic Acid Synthesis in Chloroplasts
      Olaf Czarnecki, Boris Hedtke, Michael Melzer, Maxi Rothbart, Andreas Richter, Yvonne Schröter, Thomas Pfannschmidt, Bernhard Grimm
      Plant Cell Dec 2011, 23 (12) 4476-4491; DOI: https://doi.org/10.1105/tpc.111.086421

      The identification and characterization of a glutamyl-tRNA reductase binding protein (GluTRBP) results in a new model for spatial separation of 5-aminolevulinic acid (ALA) formation. GluTRBP-bound GluTR is attached to the thylakoid membrane and synthesizes ALA that is likely directed into the heme-synthesizing pathway.

  8. Selvaraj, Gopalan

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  9. Settles, A. Mark

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  10. Sit, Rene V.

    1. Open Access
      The RootChip: An Integrated Microfluidic Chip for Plant Science
      Guido Grossmann, Woei-Jiun Guo, David W. Ehrhardt, Wolf B. Frommer, Rene V. Sit, Stephen R. Quake, Matthias Meier
      Plant Cell Dec 2011, 23 (12) 4234-4240; DOI: https://doi.org/10.1105/tpc.111.092577
  11. Sonnewald, Uwe

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  12. Springer, Nathan M.

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

  13. Stephens, Jennifer

    1. You have accessRestricted Access
      Syringyl Lignin Is Unaltered by Severe Sinapyl Alcohol Dehydrogenase Suppression in Tobacco
      Abdellah Barakate, Jennifer Stephens, Alison Goldie, William N. Hunter, David Marshall, Robert D. Hancock, Catherine Lapierre, Kris Morreel, Wout Boerjan, Claire Halpin
      Plant Cell Dec 2011, 23 (12) 4492-4506; DOI: https://doi.org/10.1105/tpc.111.089037

      This study identifies cinnamyl alcohol dehydrogenase as the predominant enzyme that catalyzes the final step in S lignin biosynthesis in woody angiosperm xylem and challenges the widely held view that sinapyl alcohol dehydrogenase regulates S lignin biosynthesis in angiosperms.

  14. Stone, Sandra

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  15. Sun, Jingbo

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

  16. Swanson-Wagner, Ruth A.

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

T

  1. Tang, Haibao

    1. You have accessRestricted Access
      Different Gene Families in Arabidopsis thaliana Transposed in Different Epochs and at Different Frequencies throughout the Rosids
      Margaret R. Woodhouse, Haibao Tang, Michael Freeling
      Plant Cell Dec 2011, 23 (12) 4241-4253; DOI: https://doi.org/10.1105/tpc.111.093567

      This work examines the chromosomal positional history of all genes in Arabidopsis thaliana through evolutionary time in the rosid superorder, finding that mobile gene families are under different selection pressure than syntenic gene families.

  2. Thompson, Gary A.

    1. You have accessRestricted Access
      Phloem Ultrastructure and Pressure Flow: Sieve-Element-Occlusion-Related Agglomerations Do Not Affect Translocation
      Daniel R. Froelich, Daniel L. Mullendore, Kåre H. Jensen, Tim J. Ross-Elliott, James A. Anstead, Gary A. Thompson, Hélène C. Pélissier, Michael Knoblauch
      Plant Cell Dec 2011, 23 (12) 4428-4445; DOI: https://doi.org/10.1105/tpc.111.093179

      Several protocols and methods were developed to study the in vivo structure, ultrastructure, and physiology of sieve tubes. The ultrastructure of sieve tubes differs significantly from what has been shown so far. The impact on phloem function is discussed.

  3. Traas, Jan

    1. You have accessRestricted Access
      A Data-Driven Integrative Model of Sepal Primordium Polarity in Arabidopsis
      Camilo La Rota, Jérôme Chopard, Pradeep Das, Sandrine Paindavoine, Frédérique Rozier, Etienne Farcot, Christophe Godin, Jan Traas, Françoise Monéger
      Plant Cell Dec 2011, 23 (12) 4318-4333; DOI: https://doi.org/10.1105/tpc.111.092619

      This study presents a new modeling approach allowing diverse types of data to be integrated in a coherent molecular regulatory network model. This was used to analyze sepal primordium development and revealed three previously unreported pathways potentially involved in polarity.

  4. Tseung, Chi-Wah

    1. Open Access
      Maize Rough Endosperm3 Encodes an RNA Splicing Factor Required for Endosperm Cell Differentiation and Has a Nonautonomous Effect on Embryo Development
      Romain Fouquet, Federico Martin, Diego S. Fajardo, Christine M. Gault, Elisa Gómez, Chi-Wah Tseung, Tyler Policht, Gregorio Hueros, A. Mark Settles
      Plant Cell Dec 2011, 23 (12) 4280-4297; DOI: https://doi.org/10.1105/tpc.111.092163

      We used maize translocations to identify rough endosperm3 (rgh3) as a locus required in the endosperm to promote embryo development. The rgh3 mutant impairs or delays endosperm cell differentiation and encodes a hypomorphic allele of URP, a core RNA splicing factor. A subset of alternatively spliced transcripts shows differences in splicing patterns in wild-type and rgh3 tissues.

  5. Tsuda, Katsutoshi

    1. Open Access
      Positive Autoregulation of a KNOX Gene Is Essential for Shoot Apical Meristem Maintenance in Rice
      Katsutoshi Tsuda, Yukihiro Ito, Yutaka Sato, Nori Kurata
      Plant Cell Dec 2011, 23 (12) 4368-4381; DOI: https://doi.org/10.1105/tpc.111.090050

      This work reveals that rice KNOX genes OSH1 and OSH15 are required for shoot apical meristem (SAM) formation and maintenance and that KNOX gene expression is positively and directly regulated by OSH1 through evolutionarily conserved cis-elements. This is thought to be a novel mechanism that is indispensable for self-maintenance of the SAM.

V

  1. Van den Daele, Hilde

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  2. Vaughn, Matthew W.

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

  3. Venglat, Prakash

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  4. Verkest, Aurine

    1. You have accessRestricted Access
      Arabidopsis ULTRAVIOLET-B-INSENSITIVE4 Maintains Cell Division Activity by Temporal Inhibition of the Anaphase-Promoting Complex/Cyclosome
      Jefri Heyman, Hilde Van den Daele, Kevin De Wit, Véronique Boudolf, Barbara Berckmans, Aurine Verkest, Claire Lessa Alvim Kamei, Geert De Jaeger, Csaba Koncz, Lieven De Veylder
      Plant Cell Dec 2011, 23 (12) 4394-4410; DOI: https://doi.org/10.1105/tpc.111.091793

      This work identifies ULTRAVIOLET-B-INSENSITIVE4 as a plant-specific inhibitor of the Anaphase-Promoting Complex/Cyclosome E3-ubiquitine ligase. Its activity allows the temporal accumulation of mitotic cyclins during the DNA replication phase, thereby linking DNA replication with mitosis.

  5. Vierstra, Richard

    1. You have accessRestricted Access
      Reply: Internal Membranes in Maize Aleurone Protein Storage Vacuoles: Beyond Autophagy
      Francisca C. Reyes, Marisa S. Otegui, Richard Vierstra
      Plant Cell Dec 2011, 23 (12) 4171-4172; DOI: https://doi.org/10.1105/tpc.111.231240
  6. Vierstra, Richard D.

    1. You have accessRestricted Access
      The RPT2 Subunit of the 26S Proteasome Directs Complex Assembly, Histone Dynamics, and Gametophyte and Sporophyte Development in Arabidopsis
      Kwang-Hee Lee, Atsushi Minami, Richard S. Marshall, Adam J. Book, Lisa M. Farmer, Joseph M. Walker, Richard D. Vierstra
      Plant Cell Dec 2011, 23 (12) 4298-4317; DOI: https://doi.org/10.1105/tpc.111.089482

      This study explores the function of two highly conserved isoforms of the Arabidopsis thaliana 26S proteasome subunit RPT2 that participate in proteasome-mediated protein turnover. The data point to a specific role for RPT2 in stem fasciation, male and female gametogenesis, and leaf, root, trichome, and pollen development, along with a common role for RP subunits in histone dynamics and nucleosome assembly.

W

  1. Walker, Joseph M.

    1. You have accessRestricted Access
      The RPT2 Subunit of the 26S Proteasome Directs Complex Assembly, Histone Dynamics, and Gametophyte and Sporophyte Development in Arabidopsis
      Kwang-Hee Lee, Atsushi Minami, Richard S. Marshall, Adam J. Book, Lisa M. Farmer, Joseph M. Walker, Richard D. Vierstra
      Plant Cell Dec 2011, 23 (12) 4298-4317; DOI: https://doi.org/10.1105/tpc.111.089482

      This study explores the function of two highly conserved isoforms of the Arabidopsis thaliana 26S proteasome subunit RPT2 that participate in proteasome-mediated protein turnover. The data point to a specific role for RPT2 in stem fasciation, male and female gametogenesis, and leaf, root, trichome, and pollen development, along with a common role for RP subunits in histone dynamics and nucleosome assembly.

  2. Wang, Edwin

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  3. Wang, Hong

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  4. Wang, Nili

    1. You have accessRestricted Access
      Increased Leaf Angle1, a Raf-Like MAPKKK That Interacts with a Nuclear Protein Family, Regulates Mechanical Tissue Formation in the Lamina Joint of Rice
      Jing Ning, Baocai Zhang, Nili Wang, Yihua Zhou, Lizhong Xiong
      Plant Cell Dec 2011, 23 (12) 4334-4347; DOI: https://doi.org/10.1105/tpc.111.093419

      This work characterizes ILA1, a kinase protein that regulates leaf angle through affecting mechanical properties at the leaf collar. It finds that ILA1 interacts with a previously undiscovered family of proteins whose function is unknown and mediates a different pathway than other reported kinases.

  5. Wang, Xianling

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

  6. Waters, Amanda J.

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

  7. Weber, Andreas P.M.

    1. Open Access
      Systems Analysis of a Maize Leaf Developmental Gradient Redefines the Current C4 Model and Provides Candidates for Regulation
      Thea R. Pick, Andrea Bräutigam, Urte Schlüter, Alisandra K. Denton, Christian Colmsee, Uwe Scholz, Holger Fahnenstich, Roland Pieruschka, Uwe Rascher, Uwe Sonnewald, Andreas P.M. Weber
      Plant Cell Dec 2011, 23 (12) 4208-4220; DOI: https://doi.org/10.1105/tpc.111.090324

      This work reports on a comprehensive systems biology analysis of maize leaves, concluding that C4 photosynthesis is established from sink tissue without an intermediate phase of C3 or C2 photosynthesis.

  8. Weijers, Dolf

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  9. Wen, Rui

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  10. White, Charles I.

    1. You have accessRestricted Access
      Arabidopsis ATM and ATR Kinases Prevent Propagation of Genome Damage Caused by Telomere Dysfunction
      Simon Amiard, Annie Depeiges, Elisabeth Allain, Charles I. White, Maria Eugenia Gallego
      Plant Cell Dec 2011, 23 (12) 4254-4265; DOI: https://doi.org/10.1105/tpc.111.092387

      This article shows that unprotected telomeres in plant cells are recognized as DNA breaks and elicit a DNA damage signal that is transduced by the ATM and ATR kinases, with differing specificities for eroded and for uncapped telomeres. It finds that both kinases contribute to genomic stability by inducing programmed cell death and elimination of genetically unstable cells.

  11. Woodhouse, Margaret R.

    1. You have accessRestricted Access
      Different Gene Families in Arabidopsis thaliana Transposed in Different Epochs and at Different Frequencies throughout the Rosids
      Margaret R. Woodhouse, Haibao Tang, Michael Freeling
      Plant Cell Dec 2011, 23 (12) 4241-4253; DOI: https://doi.org/10.1105/tpc.111.093567

      This work examines the chromosomal positional history of all genes in Arabidopsis thaliana through evolutionary time in the rosid superorder, finding that mobile gene families are under different selection pressure than syntenic gene families.

X

  1. Xiang, Daoquan

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  2. Xiao, Wei

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  3. Xiong, Lizhong

    1. You have accessRestricted Access
      Increased Leaf Angle1, a Raf-Like MAPKKK That Interacts with a Nuclear Protein Family, Regulates Mechanical Tissue Formation in the Lamina Joint of Rice
      Jing Ning, Baocai Zhang, Nili Wang, Yihua Zhou, Lizhong Xiong
      Plant Cell Dec 2011, 23 (12) 4334-4347; DOI: https://doi.org/10.1105/tpc.111.093419

      This work characterizes ILA1, a kinase protein that regulates leaf angle through affecting mechanical properties at the leaf collar. It finds that ILA1 interacts with a previously undiscovered family of proteins whose function is unknown and mediates a different pathway than other reported kinases.

  4. Xu, Wayne

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

Y

  1. Yang, Hui

    1. Open Access
      POPCORN Functions in the Auxin Pathway to Regulate Embryonic Body Plan and Meristem Organization in Arabidopsis
      Daoquan Xiang, Hui Yang, Prakash Venglat, Yongguo Cao, Rui Wen, Maozhi Ren, Sandra Stone, Edwin Wang, Hong Wang, Wei Xiao, Dolf Weijers, Thomas Berleth, Thomas Laux, Gopalan Selvaraj, Raju Datla
      Plant Cell Dec 2011, 23 (12) 4348-4367; DOI: https://doi.org/10.1105/tpc.111.091777

      This study describes a WD-40 repeat–containing gene, POPCORN (PCN), required for embryo development in Arabidopsis thaliana. PCN functions in the auxin pathway and regulates establishment and maintenance of shoot and root meristems during embryonic and postembryonic development.

  2. Yeh, Cheng-Ting

    1. You have accessRestricted Access
      Parent-of-Origin Effects on Gene Expression and DNA Methylation in the Maize Endosperm
      Amanda J. Waters, Irina Makarevitch, Steve R. Eichten, Ruth A. Swanson-Wagner, Cheng-Ting Yeh, Wayne Xu, Patrick S. Schnable, Matthew W. Vaughn, Mary Gehring, Nathan M. Springer
      Plant Cell Dec 2011, 23 (12) 4221-4233; DOI: https://doi.org/10.1105/tpc.111.092668

      This work uses deep sequencing of RNAs from maize endosperm and embryo to identify 54 maternally expressed genes and 46 paternally expressed genes and then examines genome-wide DNA methylation and gene expression, finding hypomethylation of the maternal allele and endosperm-specific expression for many of the imprinted genes.

  3. Yoshioka, Yasushi

    1. You have accessRestricted Access
      GIGAS CELL1, a Novel Negative Regulator of the Anaphase-Promoting Complex/Cyclosome, Is Required for Proper Mitotic Progression and Cell Fate Determination in Arabidopsis
      Eriko Iwata, Saki Ikeda, Sachihiro Matsunaga, Mariko Kurata, Yasushi Yoshioka, Marie-Claire Criqui, Pascal Genschik, Masaki Ito
      Plant Cell Dec 2011, 23 (12) 4382-4393; DOI: https://doi.org/10.1105/tpc.111.092049

      A novel plant-specific inhibitor of anaphase-promoting complex/cyclosome was identified from the gigas cell1 (gig1) mutation, which causes polyploidization of somatic cells due to ectopic endomitosis. This mutation also generated mixed-fate cells with both characters of guard cells and pavement cells, suggesting that GIG1 may have a role in cell fate determination, in addition to its role in proper mitotic progression.

  4. Yuan, Ming

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

Z

  1. Zhai, Jixian

    1. Open Access
      Massive Analysis of Rice Small RNAs: Mechanistic Implications of Regulated MicroRNAs and Variants for Differential Target RNA Cleavage
      Dong-Hoon Jeong, Sunhee Park, Jixian Zhai, Sai Guna Ranjan Gurazada, Emanuele De Paoli, Blake C. Meyers, Pamela J. Green
      Plant Cell Dec 2011, 23 (12) 4185-4207; DOI: https://doi.org/10.1105/tpc.111.089045

      This massive analysis of rice small RNAs evaluated annotated microRNAs (miRNAs) and identified new miRNAs and miRNAs regulated by environmental stresses. Of particular interest are miRNA family members with distinct sequences and organ-preferential expression; some of these guide differential target cleavage and provide new insight about how an agriculturally significant phenotype may be regulated.

  2. Zhang, Baocai

    1. You have accessRestricted Access
      Increased Leaf Angle1, a Raf-Like MAPKKK That Interacts with a Nuclear Protein Family, Regulates Mechanical Tissue Formation in the Lamina Joint of Rice
      Jing Ning, Baocai Zhang, Nili Wang, Yihua Zhou, Lizhong Xiong
      Plant Cell Dec 2011, 23 (12) 4334-4347; DOI: https://doi.org/10.1105/tpc.111.093419

      This work characterizes ILA1, a kinase protein that regulates leaf angle through affecting mechanical properties at the leaf collar. It finds that ILA1 interacts with a previously undiscovered family of proteins whose function is unknown and mediates a different pathway than other reported kinases.

  3. Zhang, Yan

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

  4. Zhang, Ziding

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

  5. Zhou, Yihua

    1. You have accessRestricted Access
      Increased Leaf Angle1, a Raf-Like MAPKKK That Interacts with a Nuclear Protein Family, Regulates Mechanical Tissue Formation in the Lamina Joint of Rice
      Jing Ning, Baocai Zhang, Nili Wang, Yihua Zhou, Lizhong Xiong
      Plant Cell Dec 2011, 23 (12) 4334-4347; DOI: https://doi.org/10.1105/tpc.111.093419

      This work characterizes ILA1, a kinase protein that regulates leaf angle through affecting mechanical properties at the leaf collar. It finds that ILA1 interacts with a previously undiscovered family of proteins whose function is unknown and mediates a different pathway than other reported kinases.

  6. Zhou, Yuan

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

  7. Zhu, Lei

    1. Open Access
      MDP25, A Novel Calcium Regulatory Protein, Mediates Hypocotyl Cell Elongation by Destabilizing Cortical Microtubules in Arabidopsis
      Jiejie Li, Xianling Wang, Tao Qin, Yan Zhang, Xiaomin Liu, Jingbo Sun, Yuan Zhou, Lei Zhu, Ziding Zhang, Ming Yuan, Tonglin Mao
      Plant Cell Dec 2011, 23 (12) 4411-4427; DOI: https://doi.org/10.1105/tpc.111.092684

      This study reveals that the Arabidopsis thaliana microtubule-destabilizing protein MDP25 regulates hypocotyl elongation. The microtubule-destabilizing activity of MDP25 is regulated by calcium, which causes MDP25 to disassociate from the plasma membrane and move into the cytosol. We identified a novel microtubule mechanism that regulates hypocotyl cell elongation in Arabidopsis.

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The Plant Cell Online: 23 (12)
The Plant Cell
Vol. 23, Issue 12
Dec 2011
  • Table of Contents
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