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Table of Contents

The Plant Cell Online: 20 (7)
Jul 2008
  • 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. Aalen, Reidunn B.

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

  2. AbuQamar, Synan

    1. You have accessRestricted Access
      Tomato Protein Kinase 1b Mediates Signaling of Plant Responses to Necrotrophic Fungi and Insect Herbivory
      Synan AbuQamar, Mao-Feng Chai, Hongli Luo, Fengming Song, Tesfaye Mengiste
      Plant Cell Jul 2008, 20 (7) 1964-1983; DOI: https://doi.org/10.1105/tpc.108.059477

      Tomato Protein Kinase 1b (TPK1b) regulates ethylene-mediated defense against pathogens and insect pests. TPK1b RNA interference plants show increased susceptibility to Botrytis infection and insect feeding and are impaired in ethylene responses. These impaired responses correlate with reduced expression of proteinase inhibitor II in response to Botrytis and 1-aminocyclopropane-1-carboxylic acid.

  3. Alsheikh, Muath

    1. You have accessRestricted Access
      Mutations in SUPPRESSOR OF VARIEGATION1, a Factor Required for Normal Chloroplast Translation, Suppress var2-Mediated Leaf Variegation in Arabidopsis
      Fei Yu, Xiayan Liu, Muath Alsheikh, Sungsoon Park, Steve Rodermel
      Plant Cell Jul 2008, 20 (7) 1786-1804; DOI: https://doi.org/10.1105/tpc.107.054965

      The Arabidopsis var2 variegation mutant has green-and white-sectored leaves due to lack of VAR2, a chloroplast FtsH metalloprotease. Variegation can be suppressed in var2 by impaired chloroplast translation caused by lesions in SVR1 and SVR2, nuclear genes that encode a chloroplast pseudouridine synthase and the ClpR1 subunit of the chloroplast Clp protease, respectively.

  4. Altamura, Maria Maddalena

    1. You have accessRestricted Access
      Auxin Regulates Arabidopsis Anther Dehiscence, Pollen Maturation, and Filament Elongation
      Valentina Cecchetti, Maria Maddalena Altamura, Giuseppina Falasca, Paolo Costantino, Maura Cardarelli
      Plant Cell Jul 2008, 20 (7) 1760-1774; DOI: https://doi.org/10.1105/tpc.107.057570

      This work shows that auxin regulates late development processes in stamens, coordinating anther dehiscence and pollen maturation and independently triggering filament elongation. In addition, auxin, which is mainly synthesized in the anthers by YUC proteins before the inception of late processes, is perceived by the TIR1 AFB receptors when late processes begin.

  5. Arredondo, Felipe D.

    1. You have accessRestricted Access
      RXLR-Mediated Entry of Phytophthora sojae Effector Avr1b into Soybean Cells Does Not Require Pathogen-Encoded Machinery
      Daolong Dou, Shiv D. Kale, Xia Wang, Rays H.Y. Jiang, Nathan A. Bruce, Felipe D. Arredondo, Xuemin Zhang, Brett M. Tyler
      Plant Cell Jul 2008, 20 (7) 1930-1947; DOI: https://doi.org/10.1105/tpc.107.056093

      In this study, the authors show that N-terminal RXLR and dEER motifs, together with flanking sequences, are necessary and sufficient to translocate oomycete effector proteins into host plant cells across the plasma cell membrane. Translocation occurs with purified proteins, indicating that no other pathogen machinery is required.

B

  1. Baldwin, Ian T.

    1. You have accessRestricted Access
      Induced Plant Defenses in the Natural Environment: Nicotiana attenuata WRKY3 and WRKY6 Coordinate Responses to Herbivory
      Melanie Skibbe, Nan Qu, Ivan Galis, Ian T. Baldwin
      Plant Cell Jul 2008, 20 (7) 1984-2000; DOI: https://doi.org/10.1105/tpc.108.058594

      WRKY transcription factors regulate plant responses to stress. This work describes two WRKY genes from Nicotiana attenuata that regulate jasmonate (JA) accumulation in response to wounding and herbivore-specific elicitors and JA-mediated defenses against herbivores in 3 years of fieldwork with plants silenced in WRKY expression in the plant's native habitat in the Great Basin Desert.

  2. Bellini, Catherine

    1. You have accessRestricted Access
      Towards a Systematic Validation of References in Real-Time RT-PCR
      Laurent Gutierrez, Mélanie Mauriat, Jérôme Pelloux, Catherine Bellini, Olivier Van Wuytswinkel
      Plant Cell Jul 2008, 20 (7) 1734-1735; DOI: https://doi.org/10.1105/tpc.108.059774
  3. Boeren, Sjef

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

  4. Bogenschutz, Naomi L.

    1. Open Access
      SCREAM/ICE1 and SCREAM2 Specify Three Cell-State Transitional Steps Leading to Arabidopsis Stomatal Differentiation
      Masahiro M. Kanaoka, Lynn Jo Pillitteri, Hiroaki Fujii, Yuki Yoshida, Naomi L. Bogenschutz, Junji Takabayashi, Jian-Kang Zhu, Keiko U. Torii
      Plant Cell Jul 2008, 20 (7) 1775-1785; DOI: https://doi.org/10.1105/tpc.108.060848

      Stomata are formed through a series of events: initiation, proliferation, and terminal differentiation. This work identifies the upstream regulator of the cold-induced transcriptome as the core component of stomatal differentiation and suggests a model strikingly similar to cell-type differentiation in animals.

  5. Bolton, Melvin D.

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

  6. Boudet, Julie

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

  7. Bouwmeester, Klaas

    1. You have accessRestricted Access
      Effector Trafficking: RXLR-dEER as Extra Gear for Delivery into Plant Cells
      Francine Govers, Klaas Bouwmeester
      Plant Cell Jul 2008, 20 (7) 1728-1730; DOI: https://doi.org/10.1105/tpc.108.062075
  8. Bruce, Nathan A.

    1. You have accessRestricted Access
      RXLR-Mediated Entry of Phytophthora sojae Effector Avr1b into Soybean Cells Does Not Require Pathogen-Encoded Machinery
      Daolong Dou, Shiv D. Kale, Xia Wang, Rays H.Y. Jiang, Nathan A. Bruce, Felipe D. Arredondo, Xuemin Zhang, Brett M. Tyler
      Plant Cell Jul 2008, 20 (7) 1930-1947; DOI: https://doi.org/10.1105/tpc.107.056093

      In this study, the authors show that N-terminal RXLR and dEER motifs, together with flanking sequences, are necessary and sufficient to translocate oomycete effector proteins into host plant cells across the plasma cell membrane. Translocation occurs with purified proteins, indicating that no other pathogen machinery is required.

  9. Butenko, Melinka A.

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

C

  1. Cahoon, Edgar B.

    1. You have accessRestricted Access
      Sphingolipid Long-Chain Base Hydroxylation Is Important for Growth and Regulation of Sphingolipid Content and Composition in Arabidopsis
      Ming Chen, Jonathan E. Markham, Charles R. Dietrich, Jan G. Jaworski, Edgar B. Cahoon
      Plant Cell Jul 2008, 20 (7) 1862-1878; DOI: https://doi.org/10.1105/tpc.107.057851

      Sphingolipids are essential components of endomembranes and regulators of programmed cell death. This work shows that loss of the C-4 hydroxyl group of sphingolipid long-chain bases (LCBs) in Arabidopsis severely reduces plant growth and increases the content of sphingolipids, primarily with C16 fatty acids. Thus, LCB hydroxylation is important in mediating growth and sphingolipid metabolism.

  2. Cardarelli, Maura

    1. You have accessRestricted Access
      Auxin Regulates Arabidopsis Anther Dehiscence, Pollen Maturation, and Filament Elongation
      Valentina Cecchetti, Maria Maddalena Altamura, Giuseppina Falasca, Paolo Costantino, Maura Cardarelli
      Plant Cell Jul 2008, 20 (7) 1760-1774; DOI: https://doi.org/10.1105/tpc.107.057570

      This work shows that auxin regulates late development processes in stamens, coordinating anther dehiscence and pollen maturation and independently triggering filament elongation. In addition, auxin, which is mainly synthesized in the anthers by YUC proteins before the inception of late processes, is perceived by the TIR1 AFB receptors when late processes begin.

  3. Cecchetti, Valentina

    1. You have accessRestricted Access
      Auxin Regulates Arabidopsis Anther Dehiscence, Pollen Maturation, and Filament Elongation
      Valentina Cecchetti, Maria Maddalena Altamura, Giuseppina Falasca, Paolo Costantino, Maura Cardarelli
      Plant Cell Jul 2008, 20 (7) 1760-1774; DOI: https://doi.org/10.1105/tpc.107.057570

      This work shows that auxin regulates late development processes in stamens, coordinating anther dehiscence and pollen maturation and independently triggering filament elongation. In addition, auxin, which is mainly synthesized in the anthers by YUC proteins before the inception of late processes, is perceived by the TIR1 AFB receptors when late processes begin.

  4. Chai, Mao-Feng

    1. You have accessRestricted Access
      Tomato Protein Kinase 1b Mediates Signaling of Plant Responses to Necrotrophic Fungi and Insect Herbivory
      Synan AbuQamar, Mao-Feng Chai, Hongli Luo, Fengming Song, Tesfaye Mengiste
      Plant Cell Jul 2008, 20 (7) 1964-1983; DOI: https://doi.org/10.1105/tpc.108.059477

      Tomato Protein Kinase 1b (TPK1b) regulates ethylene-mediated defense against pathogens and insect pests. TPK1b RNA interference plants show increased susceptibility to Botrytis infection and insect feeding and are impaired in ethylene responses. These impaired responses correlate with reduced expression of proteinase inhibitor II in response to Botrytis and 1-aminocyclopropane-1-carboxylic acid.

  5. Chattopadhyay, Sudip

    1. You have accessRestricted Access
      Calmodulin7 Plays an Important Role as Transcriptional Regulator in Arabidopsis Seedling Development
      Ritu Kushwaha, Aparna Singh, Sudip Chattopadhyay
      Plant Cell Jul 2008, 20 (7) 1747-1759; DOI: https://doi.org/10.1105/tpc.107.057612

      Calmodulin (CaM) plays multiple regulatory roles in eukaryotes. This study examines the transcriptional regulatory role of CAM7 in early seedling development in plants and further explores the concerted function of CAM7 and HY5 in the regulation of photomorphogenic growth and light-regulated gene expression.

  6. Chen, Ming

    1. You have accessRestricted Access
      Sphingolipid Long-Chain Base Hydroxylation Is Important for Growth and Regulation of Sphingolipid Content and Composition in Arabidopsis
      Ming Chen, Jonathan E. Markham, Charles R. Dietrich, Jan G. Jaworski, Edgar B. Cahoon
      Plant Cell Jul 2008, 20 (7) 1862-1878; DOI: https://doi.org/10.1105/tpc.107.057851

      Sphingolipids are essential components of endomembranes and regulators of programmed cell death. This work shows that loss of the C-4 hydroxyl group of sphingolipid long-chain bases (LCBs) in Arabidopsis severely reduces plant growth and increases the content of sphingolipids, primarily with C16 fatty acids. Thus, LCB hydroxylation is important in mediating growth and sphingolipid metabolism.

  7. Chen, Saihua

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

  8. Chen, Zhizhong

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

  9. Cheng, Zhukuan

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

  10. Cho, Seok Keun

    1. You have accessRestricted Access
      Arabidopsis PUB22 and PUB23 Are Homologous U-Box E3 Ubiquitin Ligases That Play Combinatory Roles in Response to Drought Stress
      Seok Keun Cho, Moon Young Ryu, Charlotte Song, June M. Kwak, Woo Taek Kim
      Plant Cell Jul 2008, 20 (7) 1899-1914; DOI: https://doi.org/10.1105/tpc.108.060699

      Arabidopsis PUB22 and PUB23 encode U-box–containing E3 ubiquitin ligases that are coordinately induced by abiotic stress and interact with a proteasomal subunit. Loss-of-function mutants show increased tolerance to drought stress, while overexpression increases drought sensitivity. This indicates that PUB22 and PUB23 act coordinately to negatively regulate a drought stress signaling pathway.

  11. Clark, Steven E.

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

  12. Collakova, Eva

    1. Open Access
      Arabidopsis 10-Formyl Tetrahydrofolate Deformylases Are Essential for Photorespiration
      Eva Collakova, Aymeric Goyer, Valeria Naponelli, Inga Krassovskaya, Jesse F. Gregory III, Andrew D. Hanson, Yair Shachar-Hill
      Plant Cell Jul 2008, 20 (7) 1818-1832; DOI: https://doi.org/10.1105/tpc.108.058701

      This work demonstrates the importance of mitochondrial 10-formyl tetrahydrofolate (THF) deformylase and bifunctional 5,10-methylene THF dehydrogenase/5,10-methenyl THF cyclohydrolase in photorespiration. A model showing the involvement of these folate interconversion enzymes in photorespiration is proposed.

  13. Costantino, Paolo

    1. You have accessRestricted Access
      Auxin Regulates Arabidopsis Anther Dehiscence, Pollen Maturation, and Filament Elongation
      Valentina Cecchetti, Maria Maddalena Altamura, Giuseppina Falasca, Paolo Costantino, Maura Cardarelli
      Plant Cell Jul 2008, 20 (7) 1760-1774; DOI: https://doi.org/10.1105/tpc.107.057570

      This work shows that auxin regulates late development processes in stamens, coordinating anther dehiscence and pollen maturation and independently triggering filament elongation. In addition, auxin, which is mainly synthesized in the anthers by YUC proteins before the inception of late processes, is perceived by the TIR1 AFB receptors when late processes begin.

  14. Czechowski, Tomasz

    1. You have accessRestricted Access
      Eleven Golden Rules of Quantitative RT-PCR
      Michael K. Udvardi, Tomasz Czechowski, Wolf-Rüdiger Scheible
      Plant Cell Jul 2008, 20 (7) 1736-1737; DOI: https://doi.org/10.1105/tpc.108.061143

D

  1. De Smet, Ive

    1. You have accessRestricted Access
      The Evolving Complexity of the Auxin Pathway
      Steffen Lau, Gerd Jürgens, Ive De Smet
      Plant Cell Jul 2008, 20 (7) 1738-1746; DOI: https://doi.org/10.1105/tpc.108.060418
  2. de Wit, Pierre J.G.M.

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

  3. Dietrich, Charles R.

    1. You have accessRestricted Access
      Sphingolipid Long-Chain Base Hydroxylation Is Important for Growth and Regulation of Sphingolipid Content and Composition in Arabidopsis
      Ming Chen, Jonathan E. Markham, Charles R. Dietrich, Jan G. Jaworski, Edgar B. Cahoon
      Plant Cell Jul 2008, 20 (7) 1862-1878; DOI: https://doi.org/10.1105/tpc.107.057851

      Sphingolipids are essential components of endomembranes and regulators of programmed cell death. This work shows that loss of the C-4 hydroxyl group of sphingolipid long-chain bases (LCBs) in Arabidopsis severely reduces plant growth and increases the content of sphingolipids, primarily with C16 fatty acids. Thus, LCB hydroxylation is important in mediating growth and sphingolipid metabolism.

  4. Dou, Daolong

    1. You have accessRestricted Access
      RXLR-Mediated Entry of Phytophthora sojae Effector Avr1b into Soybean Cells Does Not Require Pathogen-Encoded Machinery
      Daolong Dou, Shiv D. Kale, Xia Wang, Rays H.Y. Jiang, Nathan A. Bruce, Felipe D. Arredondo, Xuemin Zhang, Brett M. Tyler
      Plant Cell Jul 2008, 20 (7) 1930-1947; DOI: https://doi.org/10.1105/tpc.107.056093

      In this study, the authors show that N-terminal RXLR and dEER motifs, together with flanking sequences, are necessary and sufficient to translocate oomycete effector proteins into host plant cells across the plasma cell membrane. Translocation occurs with purified proteins, indicating that no other pathogen machinery is required.

E

  1. Eckardt, Nancy A.

    1. You have accessRestricted Access
      Auxin Regulation of Late Stamen Development
      Nancy A. Eckardt
      Plant Cell Jul 2008, 20 (7) 1733; DOI: https://doi.org/10.1105/tpc.108.200712

F

  1. Falasca, Giuseppina

    1. You have accessRestricted Access
      Auxin Regulates Arabidopsis Anther Dehiscence, Pollen Maturation, and Filament Elongation
      Valentina Cecchetti, Maria Maddalena Altamura, Giuseppina Falasca, Paolo Costantino, Maura Cardarelli
      Plant Cell Jul 2008, 20 (7) 1760-1774; DOI: https://doi.org/10.1105/tpc.107.057570

      This work shows that auxin regulates late development processes in stamens, coordinating anther dehiscence and pollen maturation and independently triggering filament elongation. In addition, auxin, which is mainly synthesized in the anthers by YUC proteins before the inception of late processes, is perceived by the TIR1 AFB receptors when late processes begin.

  2. Fujii, Hiroaki

    1. Open Access
      SCREAM/ICE1 and SCREAM2 Specify Three Cell-State Transitional Steps Leading to Arabidopsis Stomatal Differentiation
      Masahiro M. Kanaoka, Lynn Jo Pillitteri, Hiroaki Fujii, Yuki Yoshida, Naomi L. Bogenschutz, Junji Takabayashi, Jian-Kang Zhu, Keiko U. Torii
      Plant Cell Jul 2008, 20 (7) 1775-1785; DOI: https://doi.org/10.1105/tpc.108.060848

      Stomata are formed through a series of events: initiation, proliferation, and terminal differentiation. This work identifies the upstream regulator of the cold-induced transcriptome as the core component of stomatal differentiation and suggests a model strikingly similar to cell-type differentiation in animals.

  3. Fujita, Naoko

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

G

  1. Galis, Ivan

    1. You have accessRestricted Access
      Induced Plant Defenses in the Natural Environment: Nicotiana attenuata WRKY3 and WRKY6 Coordinate Responses to Herbivory
      Melanie Skibbe, Nan Qu, Ivan Galis, Ian T. Baldwin
      Plant Cell Jul 2008, 20 (7) 1984-2000; DOI: https://doi.org/10.1105/tpc.108.058594

      WRKY transcription factors regulate plant responses to stress. This work describes two WRKY genes from Nicotiana attenuata that regulate jasmonate (JA) accumulation in response to wounding and herbivore-specific elicitors and JA-mediated defenses against herbivores in 3 years of fieldwork with plants silenced in WRKY expression in the plant's native habitat in the Great Basin Desert.

  2. Gong, Zhizhong

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

  3. Govers, Francine

    1. You have accessRestricted Access
      Effector Trafficking: RXLR-dEER as Extra Gear for Delivery into Plant Cells
      Francine Govers, Klaas Bouwmeester
      Plant Cell Jul 2008, 20 (7) 1728-1730; DOI: https://doi.org/10.1105/tpc.108.062075
  4. Goyer, Aymeric

    1. Open Access
      Arabidopsis 10-Formyl Tetrahydrofolate Deformylases Are Essential for Photorespiration
      Eva Collakova, Aymeric Goyer, Valeria Naponelli, Inga Krassovskaya, Jesse F. Gregory III, Andrew D. Hanson, Yair Shachar-Hill
      Plant Cell Jul 2008, 20 (7) 1818-1832; DOI: https://doi.org/10.1105/tpc.108.058701

      This work demonstrates the importance of mitochondrial 10-formyl tetrahydrofolate (THF) deformylase and bifunctional 5,10-methylene THF dehydrogenase/5,10-methenyl THF cyclohydrolase in photorespiration. A model showing the involvement of these folate interconversion enzymes in photorespiration is proposed.

  5. Gregory, Jesse F.

    1. Open Access
      Arabidopsis 10-Formyl Tetrahydrofolate Deformylases Are Essential for Photorespiration
      Eva Collakova, Aymeric Goyer, Valeria Naponelli, Inga Krassovskaya, Jesse F. Gregory III, Andrew D. Hanson, Yair Shachar-Hill
      Plant Cell Jul 2008, 20 (7) 1818-1832; DOI: https://doi.org/10.1105/tpc.108.058701

      This work demonstrates the importance of mitochondrial 10-formyl tetrahydrofolate (THF) deformylase and bifunctional 5,10-methylene THF dehydrogenase/5,10-methenyl THF cyclohydrolase in photorespiration. A model showing the involvement of these folate interconversion enzymes in photorespiration is proposed.

  6. Guo, Yongfeng

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

  7. Gutierrez, Laurent

    1. You have accessRestricted Access
      Towards a Systematic Validation of References in Real-Time RT-PCR
      Laurent Gutierrez, Mélanie Mauriat, Jérôme Pelloux, Catherine Bellini, Olivier Van Wuytswinkel
      Plant Cell Jul 2008, 20 (7) 1734-1735; DOI: https://doi.org/10.1105/tpc.108.059774

H

  1. Hanson, Andrew D.

    1. Open Access
      Arabidopsis 10-Formyl Tetrahydrofolate Deformylases Are Essential for Photorespiration
      Eva Collakova, Aymeric Goyer, Valeria Naponelli, Inga Krassovskaya, Jesse F. Gregory III, Andrew D. Hanson, Yair Shachar-Hill
      Plant Cell Jul 2008, 20 (7) 1818-1832; DOI: https://doi.org/10.1105/tpc.108.058701

      This work demonstrates the importance of mitochondrial 10-formyl tetrahydrofolate (THF) deformylase and bifunctional 5,10-methylene THF dehydrogenase/5,10-methenyl THF cyclohydrolase in photorespiration. A model showing the involvement of these folate interconversion enzymes in photorespiration is proposed.

  2. He, Fei

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

  3. Hofmann, Nancy R.

    1. You have accessRestricted Access
      They All Scream for ICE1/SCRM2: Core Regulatory Units in Stomatal Development
      Nancy R. Hofmann
      Plant Cell Jul 2008, 20 (7) 1732; DOI: https://doi.org/10.1105/tpc.108.200711
  4. Holmgren, Asbjørn

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

  5. Hosaka, Yuko

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  6. Hotson, Andrew

    1. Open Access
      XopD SUMO Protease Affects Host Transcription, Promotes Pathogen Growth, and Delays Symptom Development in Xanthomonas-Infected Tomato Leaves
      Jung-Gun Kim, Kyle W. Taylor, Andrew Hotson, Mark Keegan, Eric A. Schmelz, Mary Beth Mudgett
      Plant Cell Jul 2008, 20 (7) 1915-1929; DOI: https://doi.org/10.1105/tpc.108.058529

      This work shows that the XopD T3S effector promotes pathogen multiplication in a susceptible host and suppresses the development of chlorosis and necrosis in diseased tissue. Biochemical analysis reveals that XopD possesses DNA binding and transcriptional repressor activity, in addition to SUMO protease activity, indicating that all three activities are required for XopD virulence.

  7. Hwang, Seon-Kap

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

J

  1. Jaworski, Jan G.

    1. You have accessRestricted Access
      Sphingolipid Long-Chain Base Hydroxylation Is Important for Growth and Regulation of Sphingolipid Content and Composition in Arabidopsis
      Ming Chen, Jonathan E. Markham, Charles R. Dietrich, Jan G. Jaworski, Edgar B. Cahoon
      Plant Cell Jul 2008, 20 (7) 1862-1878; DOI: https://doi.org/10.1105/tpc.107.057851

      Sphingolipids are essential components of endomembranes and regulators of programmed cell death. This work shows that loss of the C-4 hydroxyl group of sphingolipid long-chain bases (LCBs) in Arabidopsis severely reduces plant growth and increases the content of sphingolipids, primarily with C16 fatty acids. Thus, LCB hydroxylation is important in mediating growth and sphingolipid metabolism.

  2. Ji, Qing

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

  3. Jiang, Rays H.Y.

    1. You have accessRestricted Access
      RXLR-Mediated Entry of Phytophthora sojae Effector Avr1b into Soybean Cells Does Not Require Pathogen-Encoded Machinery
      Daolong Dou, Shiv D. Kale, Xia Wang, Rays H.Y. Jiang, Nathan A. Bruce, Felipe D. Arredondo, Xuemin Zhang, Brett M. Tyler
      Plant Cell Jul 2008, 20 (7) 1930-1947; DOI: https://doi.org/10.1105/tpc.107.056093

      In this study, the authors show that N-terminal RXLR and dEER motifs, together with flanking sequences, are necessary and sufficient to translocate oomycete effector proteins into host plant cells across the plasma cell membrane. Translocation occurs with purified proteins, indicating that no other pathogen machinery is required.

  4. Jürgens, Gerd

    1. You have accessRestricted Access
      The Evolving Complexity of the Auxin Pathway
      Steffen Lau, Gerd Jürgens, Ive De Smet
      Plant Cell Jul 2008, 20 (7) 1738-1746; DOI: https://doi.org/10.1105/tpc.108.060418

K

  1. Kale, Shiv D.

    1. You have accessRestricted Access
      RXLR-Mediated Entry of Phytophthora sojae Effector Avr1b into Soybean Cells Does Not Require Pathogen-Encoded Machinery
      Daolong Dou, Shiv D. Kale, Xia Wang, Rays H.Y. Jiang, Nathan A. Bruce, Felipe D. Arredondo, Xuemin Zhang, Brett M. Tyler
      Plant Cell Jul 2008, 20 (7) 1930-1947; DOI: https://doi.org/10.1105/tpc.107.056093

      In this study, the authors show that N-terminal RXLR and dEER motifs, together with flanking sequences, are necessary and sufficient to translocate oomycete effector proteins into host plant cells across the plasma cell membrane. Translocation occurs with purified proteins, indicating that no other pathogen machinery is required.

  2. Kanaoka, Masahiro M.

    1. Open Access
      SCREAM/ICE1 and SCREAM2 Specify Three Cell-State Transitional Steps Leading to Arabidopsis Stomatal Differentiation
      Masahiro M. Kanaoka, Lynn Jo Pillitteri, Hiroaki Fujii, Yuki Yoshida, Naomi L. Bogenschutz, Junji Takabayashi, Jian-Kang Zhu, Keiko U. Torii
      Plant Cell Jul 2008, 20 (7) 1775-1785; DOI: https://doi.org/10.1105/tpc.108.060848

      Stomata are formed through a series of events: initiation, proliferation, and terminal differentiation. This work identifies the upstream regulator of the cold-induced transcriptome as the core component of stomatal differentiation and suggests a model strikingly similar to cell-type differentiation in animals.

  3. Kaneko, Nanae

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  4. Keegan, Mark

    1. Open Access
      XopD SUMO Protease Affects Host Transcription, Promotes Pathogen Growth, and Delays Symptom Development in Xanthomonas-Infected Tomato Leaves
      Jung-Gun Kim, Kyle W. Taylor, Andrew Hotson, Mark Keegan, Eric A. Schmelz, Mary Beth Mudgett
      Plant Cell Jul 2008, 20 (7) 1915-1929; DOI: https://doi.org/10.1105/tpc.108.058529

      This work shows that the XopD T3S effector promotes pathogen multiplication in a susceptible host and suppresses the development of chlorosis and necrosis in diseased tissue. Biochemical analysis reveals that XopD possesses DNA binding and transcriptional repressor activity, in addition to SUMO protease activity, indicating that all three activities are required for XopD virulence.

  5. Kim, Jung-Gun

    1. Open Access
      XopD SUMO Protease Affects Host Transcription, Promotes Pathogen Growth, and Delays Symptom Development in Xanthomonas-Infected Tomato Leaves
      Jung-Gun Kim, Kyle W. Taylor, Andrew Hotson, Mark Keegan, Eric A. Schmelz, Mary Beth Mudgett
      Plant Cell Jul 2008, 20 (7) 1915-1929; DOI: https://doi.org/10.1105/tpc.108.058529

      This work shows that the XopD T3S effector promotes pathogen multiplication in a susceptible host and suppresses the development of chlorosis and necrosis in diseased tissue. Biochemical analysis reveals that XopD possesses DNA binding and transcriptional repressor activity, in addition to SUMO protease activity, indicating that all three activities are required for XopD virulence.

  6. Kim, Woo Taek

    1. You have accessRestricted Access
      Arabidopsis PUB22 and PUB23 Are Homologous U-Box E3 Ubiquitin Ligases That Play Combinatory Roles in Response to Drought Stress
      Seok Keun Cho, Moon Young Ryu, Charlotte Song, June M. Kwak, Woo Taek Kim
      Plant Cell Jul 2008, 20 (7) 1899-1914; DOI: https://doi.org/10.1105/tpc.108.060699

      Arabidopsis PUB22 and PUB23 encode U-box–containing E3 ubiquitin ligases that are coordinately induced by abiotic stress and interact with a proteasomal subunit. Loss-of-function mutants show increased tolerance to drought stress, while overexpression increases drought sensitivity. This indicates that PUB22 and PUB23 act coordinately to negatively regulate a drought stress signaling pathway.

  7. Krassovskaya, Inga

    1. Open Access
      Arabidopsis 10-Formyl Tetrahydrofolate Deformylases Are Essential for Photorespiration
      Eva Collakova, Aymeric Goyer, Valeria Naponelli, Inga Krassovskaya, Jesse F. Gregory III, Andrew D. Hanson, Yair Shachar-Hill
      Plant Cell Jul 2008, 20 (7) 1818-1832; DOI: https://doi.org/10.1105/tpc.108.058701

      This work demonstrates the importance of mitochondrial 10-formyl tetrahydrofolate (THF) deformylase and bifunctional 5,10-methylene THF dehydrogenase/5,10-methenyl THF cyclohydrolase in photorespiration. A model showing the involvement of these folate interconversion enzymes in photorespiration is proposed.

  8. Kristiansen, Wenche

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

  9. Kushwaha, Ritu

    1. You have accessRestricted Access
      Calmodulin7 Plays an Important Role as Transcriptional Regulator in Arabidopsis Seedling Development
      Ritu Kushwaha, Aparna Singh, Sudip Chattopadhyay
      Plant Cell Jul 2008, 20 (7) 1747-1759; DOI: https://doi.org/10.1105/tpc.107.057612

      Calmodulin (CaM) plays multiple regulatory roles in eukaryotes. This study examines the transcriptional regulatory role of CAM7 in early seedling development in plants and further explores the concerted function of CAM7 and HY5 in the regulation of photomorphogenic growth and light-regulated gene expression.

  10. Kwak, June M.

    1. You have accessRestricted Access
      Arabidopsis PUB22 and PUB23 Are Homologous U-Box E3 Ubiquitin Ligases That Play Combinatory Roles in Response to Drought Stress
      Seok Keun Cho, Moon Young Ryu, Charlotte Song, June M. Kwak, Woo Taek Kim
      Plant Cell Jul 2008, 20 (7) 1899-1914; DOI: https://doi.org/10.1105/tpc.108.060699

      Arabidopsis PUB22 and PUB23 encode U-box–containing E3 ubiquitin ligases that are coordinately induced by abiotic stress and interact with a proteasomal subunit. Loss-of-function mutants show increased tolerance to drought stress, while overexpression increases drought sensitivity. This indicates that PUB22 and PUB23 act coordinately to negatively regulate a drought stress signaling pathway.

L

  1. Lau, Steffen

    1. You have accessRestricted Access
      The Evolving Complexity of the Auxin Pathway
      Steffen Lau, Gerd Jürgens, Ive De Smet
      Plant Cell Jul 2008, 20 (7) 1738-1746; DOI: https://doi.org/10.1105/tpc.108.060418
  2. Liu, Xiangnong

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

  3. Liu, Xiayan

    1. You have accessRestricted Access
      Mutations in SUPPRESSOR OF VARIEGATION1, a Factor Required for Normal Chloroplast Translation, Suppress var2-Mediated Leaf Variegation in Arabidopsis
      Fei Yu, Xiayan Liu, Muath Alsheikh, Sungsoon Park, Steve Rodermel
      Plant Cell Jul 2008, 20 (7) 1786-1804; DOI: https://doi.org/10.1105/tpc.107.054965

      The Arabidopsis var2 variegation mutant has green-and white-sectored leaves due to lack of VAR2, a chloroplast FtsH metalloprotease. Variegation can be suppressed in var2 by impaired chloroplast translation caused by lesions in SVR1 and SVR2, nuclear genes that encode a chloroplast pseudouridine synthase and the ClpR1 subunit of the chloroplast Clp protease, respectively.

  4. Luo, Hongli

    1. You have accessRestricted Access
      Tomato Protein Kinase 1b Mediates Signaling of Plant Responses to Necrotrophic Fungi and Insect Herbivory
      Synan AbuQamar, Mao-Feng Chai, Hongli Luo, Fengming Song, Tesfaye Mengiste
      Plant Cell Jul 2008, 20 (7) 1964-1983; DOI: https://doi.org/10.1105/tpc.108.059477

      Tomato Protein Kinase 1b (TPK1b) regulates ethylene-mediated defense against pathogens and insect pests. TPK1b RNA interference plants show increased susceptibility to Botrytis infection and insect feeding and are impaired in ethylene responses. These impaired responses correlate with reduced expression of proteinase inhibitor II in response to Botrytis and 1-aminocyclopropane-1-carboxylic acid.

M

  1. Mach, Jennifer

    1. You have accessRestricted Access
      Effector XopD Suppresses Tissue Degeneration in Xanthomonas-Infected Tomato Leaves
      Jennifer Mach
      Plant Cell Jul 2008, 20 (7) 1731; DOI: https://doi.org/10.1105/tpc.108.200710
  2. Markham, Jonathan E.

    1. You have accessRestricted Access
      Sphingolipid Long-Chain Base Hydroxylation Is Important for Growth and Regulation of Sphingolipid Content and Composition in Arabidopsis
      Ming Chen, Jonathan E. Markham, Charles R. Dietrich, Jan G. Jaworski, Edgar B. Cahoon
      Plant Cell Jul 2008, 20 (7) 1862-1878; DOI: https://doi.org/10.1105/tpc.107.057851

      Sphingolipids are essential components of endomembranes and regulators of programmed cell death. This work shows that loss of the C-4 hydroxyl group of sphingolipid long-chain bases (LCBs) in Arabidopsis severely reduces plant growth and increases the content of sphingolipids, primarily with C16 fatty acids. Thus, LCB hydroxylation is important in mediating growth and sphingolipid metabolism.

  3. Martin, Cathie

    1. You have accessRestricted Access
      Refining Our Standards
      Cathie Martin
      Plant Cell Jul 2008, 20 (7) 1727; DOI: https://doi.org/10.1105/tpc.108.200780
  4. Maurel, Christophe

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

  5. Mauriat, Mélanie

    1. You have accessRestricted Access
      Towards a Systematic Validation of References in Real-Time RT-PCR
      Laurent Gutierrez, Mélanie Mauriat, Jérôme Pelloux, Catherine Bellini, Olivier Van Wuytswinkel
      Plant Cell Jul 2008, 20 (7) 1734-1735; DOI: https://doi.org/10.1105/tpc.108.059774
  6. Mengiste, Tesfaye

    1. You have accessRestricted Access
      Tomato Protein Kinase 1b Mediates Signaling of Plant Responses to Necrotrophic Fungi and Insect Herbivory
      Synan AbuQamar, Mao-Feng Chai, Hongli Luo, Fengming Song, Tesfaye Mengiste
      Plant Cell Jul 2008, 20 (7) 1964-1983; DOI: https://doi.org/10.1105/tpc.108.059477

      Tomato Protein Kinase 1b (TPK1b) regulates ethylene-mediated defense against pathogens and insect pests. TPK1b RNA interference plants show increased susceptibility to Botrytis infection and insect feeding and are impaired in ethylene responses. These impaired responses correlate with reduced expression of proteinase inhibitor II in response to Botrytis and 1-aminocyclopropane-1-carboxylic acid.

  7. Mudgett, Mary Beth

    1. Open Access
      XopD SUMO Protease Affects Host Transcription, Promotes Pathogen Growth, and Delays Symptom Development in Xanthomonas-Infected Tomato Leaves
      Jung-Gun Kim, Kyle W. Taylor, Andrew Hotson, Mark Keegan, Eric A. Schmelz, Mary Beth Mudgett
      Plant Cell Jul 2008, 20 (7) 1915-1929; DOI: https://doi.org/10.1105/tpc.108.058529

      This work shows that the XopD T3S effector promotes pathogen multiplication in a susceptible host and suppresses the development of chlorosis and necrosis in diseased tissue. Biochemical analysis reveals that XopD possesses DNA binding and transcriptional repressor activity, in addition to SUMO protease activity, indicating that all three activities are required for XopD virulence.

  8. Muranaka, Toshiya

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

N

  1. Nakamura, Yasunori

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  2. Naponelli, Valeria

    1. Open Access
      Arabidopsis 10-Formyl Tetrahydrofolate Deformylases Are Essential for Photorespiration
      Eva Collakova, Aymeric Goyer, Valeria Naponelli, Inga Krassovskaya, Jesse F. Gregory III, Andrew D. Hanson, Yair Shachar-Hill
      Plant Cell Jul 2008, 20 (7) 1818-1832; DOI: https://doi.org/10.1105/tpc.108.058701

      This work demonstrates the importance of mitochondrial 10-formyl tetrahydrofolate (THF) deformylase and bifunctional 5,10-methylene THF dehydrogenase/5,10-methenyl THF cyclohydrolase in photorespiration. A model showing the involvement of these folate interconversion enzymes in photorespiration is proposed.

  3. Nishi, Aiko

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

O

  1. Ohdan, Takashi

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  2. Ohyama, Kiyoshi

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

  3. Okita, Thomas W.

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

P

  1. Park, Sungsoon

    1. You have accessRestricted Access
      Mutations in SUPPRESSOR OF VARIEGATION1, a Factor Required for Normal Chloroplast Translation, Suppress var2-Mediated Leaf Variegation in Arabidopsis
      Fei Yu, Xiayan Liu, Muath Alsheikh, Sungsoon Park, Steve Rodermel
      Plant Cell Jul 2008, 20 (7) 1786-1804; DOI: https://doi.org/10.1105/tpc.107.054965

      The Arabidopsis var2 variegation mutant has green-and white-sectored leaves due to lack of VAR2, a chloroplast FtsH metalloprotease. Variegation can be suppressed in var2 by impaired chloroplast translation caused by lesions in SVR1 and SVR2, nuclear genes that encode a chloroplast pseudouridine synthase and the ClpR1 subunit of the chloroplast Clp protease, respectively.

  2. Pelloux, Jérôme

    1. You have accessRestricted Access
      Towards a Systematic Validation of References in Real-Time RT-PCR
      Laurent Gutierrez, Mélanie Mauriat, Jérôme Pelloux, Catherine Bellini, Olivier Van Wuytswinkel
      Plant Cell Jul 2008, 20 (7) 1734-1735; DOI: https://doi.org/10.1105/tpc.108.059774
  3. Pillitteri, Lynn Jo

    1. Open Access
      SCREAM/ICE1 and SCREAM2 Specify Three Cell-State Transitional Steps Leading to Arabidopsis Stomatal Differentiation
      Masahiro M. Kanaoka, Lynn Jo Pillitteri, Hiroaki Fujii, Yuki Yoshida, Naomi L. Bogenschutz, Junji Takabayashi, Jian-Kang Zhu, Keiko U. Torii
      Plant Cell Jul 2008, 20 (7) 1775-1785; DOI: https://doi.org/10.1105/tpc.108.060848

      Stomata are formed through a series of events: initiation, proliferation, and terminal differentiation. This work identifies the upstream regulator of the cold-induced transcriptome as the core component of stomatal differentiation and suggests a model strikingly similar to cell-type differentiation in animals.

Q

  1. Qu, Nan

    1. You have accessRestricted Access
      Induced Plant Defenses in the Natural Environment: Nicotiana attenuata WRKY3 and WRKY6 Coordinate Responses to Herbivory
      Melanie Skibbe, Nan Qu, Ivan Galis, Ian T. Baldwin
      Plant Cell Jul 2008, 20 (7) 1984-2000; DOI: https://doi.org/10.1105/tpc.108.058594

      WRKY transcription factors regulate plant responses to stress. This work describes two WRKY genes from Nicotiana attenuata that regulate jasmonate (JA) accumulation in response to wounding and herbivore-specific elicitors and JA-mediated defenses against herbivores in 3 years of fieldwork with plants silenced in WRKY expression in the plant's native habitat in the Great Basin Desert.

R

  1. Rodermel, Steve

    1. You have accessRestricted Access
      Mutations in SUPPRESSOR OF VARIEGATION1, a Factor Required for Normal Chloroplast Translation, Suppress var2-Mediated Leaf Variegation in Arabidopsis
      Fei Yu, Xiayan Liu, Muath Alsheikh, Sungsoon Park, Steve Rodermel
      Plant Cell Jul 2008, 20 (7) 1786-1804; DOI: https://doi.org/10.1105/tpc.107.054965

      The Arabidopsis var2 variegation mutant has green-and white-sectored leaves due to lack of VAR2, a chloroplast FtsH metalloprotease. Variegation can be suppressed in var2 by impaired chloroplast translation caused by lesions in SVR1 and SVR2, nuclear genes that encode a chloroplast pseudouridine synthase and the ClpR1 subunit of the chloroplast Clp protease, respectively.

  2. Ryu, Moon Young

    1. You have accessRestricted Access
      Arabidopsis PUB22 and PUB23 Are Homologous U-Box E3 Ubiquitin Ligases That Play Combinatory Roles in Response to Drought Stress
      Seok Keun Cho, Moon Young Ryu, Charlotte Song, June M. Kwak, Woo Taek Kim
      Plant Cell Jul 2008, 20 (7) 1899-1914; DOI: https://doi.org/10.1105/tpc.108.060699

      Arabidopsis PUB22 and PUB23 encode U-box–containing E3 ubiquitin ligases that are coordinately induced by abiotic stress and interact with a proteasomal subunit. Loss-of-function mutants show increased tolerance to drought stress, while overexpression increases drought sensitivity. This indicates that PUB22 and PUB23 act coordinately to negatively regulate a drought stress signaling pathway.

S

  1. Sato, Aya

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  2. Satoh, Hikaru

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  3. Scheible, Wolf-Rüdiger

    1. You have accessRestricted Access
      Eleven Golden Rules of Quantitative RT-PCR
      Michael K. Udvardi, Tomasz Czechowski, Wolf-Rüdiger Scheible
      Plant Cell Jul 2008, 20 (7) 1736-1737; DOI: https://doi.org/10.1105/tpc.108.061143
  4. Schmelz, Eric A.

    1. Open Access
      XopD SUMO Protease Affects Host Transcription, Promotes Pathogen Growth, and Delays Symptom Development in Xanthomonas-Infected Tomato Leaves
      Jung-Gun Kim, Kyle W. Taylor, Andrew Hotson, Mark Keegan, Eric A. Schmelz, Mary Beth Mudgett
      Plant Cell Jul 2008, 20 (7) 1915-1929; DOI: https://doi.org/10.1105/tpc.108.058529

      This work shows that the XopD T3S effector promotes pathogen multiplication in a susceptible host and suppresses the development of chlorosis and necrosis in diseased tissue. Biochemical analysis reveals that XopD possesses DNA binding and transcriptional repressor activity, in addition to SUMO protease activity, indicating that all three activities are required for XopD virulence.

  5. Shachar-Hill, Yair

    1. Open Access
      Arabidopsis 10-Formyl Tetrahydrofolate Deformylases Are Essential for Photorespiration
      Eva Collakova, Aymeric Goyer, Valeria Naponelli, Inga Krassovskaya, Jesse F. Gregory III, Andrew D. Hanson, Yair Shachar-Hill
      Plant Cell Jul 2008, 20 (7) 1818-1832; DOI: https://doi.org/10.1105/tpc.108.058701

      This work demonstrates the importance of mitochondrial 10-formyl tetrahydrofolate (THF) deformylase and bifunctional 5,10-methylene THF dehydrogenase/5,10-methenyl THF cyclohydrolase in photorespiration. A model showing the involvement of these folate interconversion enzymes in photorespiration is proposed.

  6. Shi, Chun-Lin

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

  7. Shi, Weiwei

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

  8. Shibahara, Kensuke

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  9. Singh, Aparna

    1. You have accessRestricted Access
      Calmodulin7 Plays an Important Role as Transcriptional Regulator in Arabidopsis Seedling Development
      Ritu Kushwaha, Aparna Singh, Sudip Chattopadhyay
      Plant Cell Jul 2008, 20 (7) 1747-1759; DOI: https://doi.org/10.1105/tpc.107.057612

      Calmodulin (CaM) plays multiple regulatory roles in eukaryotes. This study examines the transcriptional regulatory role of CAM7 in early seedling development in plants and further explores the concerted function of CAM7 and HY5 in the regulation of photomorphogenic growth and light-regulated gene expression.

  10. Skibbe, Melanie

    1. You have accessRestricted Access
      Induced Plant Defenses in the Natural Environment: Nicotiana attenuata WRKY3 and WRKY6 Coordinate Responses to Herbivory
      Melanie Skibbe, Nan Qu, Ivan Galis, Ian T. Baldwin
      Plant Cell Jul 2008, 20 (7) 1984-2000; DOI: https://doi.org/10.1105/tpc.108.058594

      WRKY transcription factors regulate plant responses to stress. This work describes two WRKY genes from Nicotiana attenuata that regulate jasmonate (JA) accumulation in response to wounding and herbivore-specific elicitors and JA-mediated defenses against herbivores in 3 years of fieldwork with plants silenced in WRKY expression in the plant's native habitat in the Great Basin Desert.

  11. Song, Charlotte

    1. You have accessRestricted Access
      Arabidopsis PUB22 and PUB23 Are Homologous U-Box E3 Ubiquitin Ligases That Play Combinatory Roles in Response to Drought Stress
      Seok Keun Cho, Moon Young Ryu, Charlotte Song, June M. Kwak, Woo Taek Kim
      Plant Cell Jul 2008, 20 (7) 1899-1914; DOI: https://doi.org/10.1105/tpc.108.060699

      Arabidopsis PUB22 and PUB23 encode U-box–containing E3 ubiquitin ligases that are coordinately induced by abiotic stress and interact with a proteasomal subunit. Loss-of-function mutants show increased tolerance to drought stress, while overexpression increases drought sensitivity. This indicates that PUB22 and PUB23 act coordinately to negatively regulate a drought stress signaling pathway.

  12. Song, Fengming

    1. You have accessRestricted Access
      Tomato Protein Kinase 1b Mediates Signaling of Plant Responses to Necrotrophic Fungi and Insect Herbivory
      Synan AbuQamar, Mao-Feng Chai, Hongli Luo, Fengming Song, Tesfaye Mengiste
      Plant Cell Jul 2008, 20 (7) 1964-1983; DOI: https://doi.org/10.1105/tpc.108.059477

      Tomato Protein Kinase 1b (TPK1b) regulates ethylene-mediated defense against pathogens and insect pests. TPK1b RNA interference plants show increased susceptibility to Botrytis infection and insect feeding and are impaired in ethylene responses. These impaired responses correlate with reduced expression of proteinase inhibitor II in response to Botrytis and 1-aminocyclopropane-1-carboxylic acid.

  13. Stenvik, Grethe-Elisabeth

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

T

  1. Takabayashi, Junji

    1. Open Access
      SCREAM/ICE1 and SCREAM2 Specify Three Cell-State Transitional Steps Leading to Arabidopsis Stomatal Differentiation
      Masahiro M. Kanaoka, Lynn Jo Pillitteri, Hiroaki Fujii, Yuki Yoshida, Naomi L. Bogenschutz, Junji Takabayashi, Jian-Kang Zhu, Keiko U. Torii
      Plant Cell Jul 2008, 20 (7) 1775-1785; DOI: https://doi.org/10.1105/tpc.108.060848

      Stomata are formed through a series of events: initiation, proliferation, and terminal differentiation. This work identifies the upstream regulator of the cold-induced transcriptome as the core component of stomatal differentiation and suggests a model strikingly similar to cell-type differentiation in animals.

  2. Tandstad, Nora M.

    1. Open Access
      The EPIP Peptide of INFLORESCENCE DEFICIENT IN ABSCISSION Is Sufficient to Induce Abscission in Arabidopsis through the Receptor-Like Kinases HAESA and HAESA-LIKE2
      Grethe-Elisabeth Stenvik, Nora M. Tandstad, Yongfeng Guo, Chun-Lin Shi, Wenche Kristiansen, Asbjørn Holmgren, Steven E. Clark, Reidunn B. Aalen, Melinka A. Butenko
      Plant Cell Jul 2008, 20 (7) 1805-1817; DOI: https://doi.org/10.1105/tpc.108.059139

      Cell separation allows plants to shed entire organs. In Arabidopsis, the IDA gene is required for abscission of floral organs (e.g., petals). A peptide present in IDA and related IDA-LIKE (IDL) proteins is sufficient for IDA function. Genetic evidence suggests that IDA and IDL proteins are ligands that act through membrane-bound receptors to control cell separation events during plant development.

  3. Tasaki, Mikako

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  4. Taylor, Kyle W.

    1. Open Access
      XopD SUMO Protease Affects Host Transcription, Promotes Pathogen Growth, and Delays Symptom Development in Xanthomonas-Infected Tomato Leaves
      Jung-Gun Kim, Kyle W. Taylor, Andrew Hotson, Mark Keegan, Eric A. Schmelz, Mary Beth Mudgett
      Plant Cell Jul 2008, 20 (7) 1915-1929; DOI: https://doi.org/10.1105/tpc.108.058529

      This work shows that the XopD T3S effector promotes pathogen multiplication in a susceptible host and suppresses the development of chlorosis and necrosis in diseased tissue. Biochemical analysis reveals that XopD possesses DNA binding and transcriptional repressor activity, in addition to SUMO protease activity, indicating that all three activities are required for XopD virulence.

  5. Thomma, Bart P.H.J.

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

  6. Tokunaga, Takashi

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  7. Torii, Keiko U.

    1. Open Access
      SCREAM/ICE1 and SCREAM2 Specify Three Cell-State Transitional Steps Leading to Arabidopsis Stomatal Differentiation
      Masahiro M. Kanaoka, Lynn Jo Pillitteri, Hiroaki Fujii, Yuki Yoshida, Naomi L. Bogenschutz, Junji Takabayashi, Jian-Kang Zhu, Keiko U. Torii
      Plant Cell Jul 2008, 20 (7) 1775-1785; DOI: https://doi.org/10.1105/tpc.108.060848

      Stomata are formed through a series of events: initiation, proliferation, and terminal differentiation. This work identifies the upstream regulator of the cold-induced transcriptome as the core component of stomatal differentiation and suggests a model strikingly similar to cell-type differentiation in animals.

  8. Tyler, Brett M.

    1. You have accessRestricted Access
      RXLR-Mediated Entry of Phytophthora sojae Effector Avr1b into Soybean Cells Does Not Require Pathogen-Encoded Machinery
      Daolong Dou, Shiv D. Kale, Xia Wang, Rays H.Y. Jiang, Nathan A. Bruce, Felipe D. Arredondo, Xuemin Zhang, Brett M. Tyler
      Plant Cell Jul 2008, 20 (7) 1930-1947; DOI: https://doi.org/10.1105/tpc.107.056093

      In this study, the authors show that N-terminal RXLR and dEER motifs, together with flanking sequences, are necessary and sufficient to translocate oomycete effector proteins into host plant cells across the plasma cell membrane. Translocation occurs with purified proteins, indicating that no other pathogen machinery is required.

U

  1. Udvardi, Michael K.

    1. You have accessRestricted Access
      Eleven Golden Rules of Quantitative RT-PCR
      Michael K. Udvardi, Tomasz Czechowski, Wolf-Rüdiger Scheible
      Plant Cell Jul 2008, 20 (7) 1736-1737; DOI: https://doi.org/10.1105/tpc.108.061143
  2. Utsumi, Yoshinori

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

V

  1. van't Klooster, John W.

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

  2. van Baarlen, Peter

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

  3. van Esse, H. Peter

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

  4. Van Wuytswinkel, Olivier

    1. You have accessRestricted Access
      Towards a Systematic Validation of References in Real-Time RT-PCR
      Laurent Gutierrez, Mélanie Mauriat, Jérôme Pelloux, Catherine Bellini, Olivier Van Wuytswinkel
      Plant Cell Jul 2008, 20 (7) 1734-1735; DOI: https://doi.org/10.1105/tpc.108.059774
  5. Vervoort, Jacques

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

W

  1. Wang, Xia

    1. You have accessRestricted Access
      RXLR-Mediated Entry of Phytophthora sojae Effector Avr1b into Soybean Cells Does Not Require Pathogen-Encoded Machinery
      Daolong Dou, Shiv D. Kale, Xia Wang, Rays H.Y. Jiang, Nathan A. Bruce, Felipe D. Arredondo, Xuemin Zhang, Brett M. Tyler
      Plant Cell Jul 2008, 20 (7) 1930-1947; DOI: https://doi.org/10.1105/tpc.107.056093

      In this study, the authors show that N-terminal RXLR and dEER motifs, together with flanking sequences, are necessary and sufficient to translocate oomycete effector proteins into host plant cells across the plasma cell membrane. Translocation occurs with purified proteins, indicating that no other pathogen machinery is required.

X

  1. Xu, Mingliang

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

Y

  1. Yadeta, Koste A.

    1. Open Access
      The Cladosporium fulvum Virulence Protein Avr2 Inhibits Host Proteases Required for Basal Defense
      H. Peter van Esse, John W. van't Klooster, Melvin D. Bolton, Koste A. Yadeta, Peter van Baarlen, Sjef Boeren, Jacques Vervoort, Pierre J.G.M. de Wit, Bart P.H.J. Thomma
      Plant Cell Jul 2008, 20 (7) 1948-1963; DOI: https://doi.org/10.1105/tpc.108.059394

      The fungus Cladosporium fulvum secretes the effector protein Avr2 during infection of tomato. This work shows that Avr2 interacts with several extracellular Cys proteases in tomato and Arabidopsis. Avr2 expression causes enhanced susceptibility towards several pathogens in both plant species, and, with RNAi-mediated gene silencing in C. fulvum, it is shown that Avr2 is a genuine virulence factor.

  2. Yang, Jilai

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

  3. Yang, Yi

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

  4. Yoshida, Mayumi

    1. You have accessRestricted Access
      Mutation of the Plastidial α-Glucan Phosphorylase Gene in Rice Affects the Synthesis and Structure of Starch in the Endosperm
      Hikaru Satoh, Kensuke Shibahara, Takashi Tokunaga, Aiko Nishi, Mikako Tasaki, Seon-Kap Hwang, Thomas W. Okita, Nanae Kaneko, Naoko Fujita, Mayumi Yoshida, Yuko Hosaka, Aya Sato, Yoshinori Utsumi, Takashi Ohdan, Yasunori Nakamura
      Plant Cell Jul 2008, 20 (7) 1833-1849; DOI: https://doi.org/10.1105/tpc.107.054007

      This study identifies rice plants with mutations in the plastidial phosphorylase (Pho1) gene. The reduced starch content and altered amylopectin structure found in the endosperm of these mutants suggests that Pho1 is a key player in starch biosynthesis in the endosperm of rice.

  5. Yoshida, Yuki

    1. Open Access
      SCREAM/ICE1 and SCREAM2 Specify Three Cell-State Transitional Steps Leading to Arabidopsis Stomatal Differentiation
      Masahiro M. Kanaoka, Lynn Jo Pillitteri, Hiroaki Fujii, Yuki Yoshida, Naomi L. Bogenschutz, Junji Takabayashi, Jian-Kang Zhu, Keiko U. Torii
      Plant Cell Jul 2008, 20 (7) 1775-1785; DOI: https://doi.org/10.1105/tpc.108.060848

      Stomata are formed through a series of events: initiation, proliferation, and terminal differentiation. This work identifies the upstream regulator of the cold-induced transcriptome as the core component of stomatal differentiation and suggests a model strikingly similar to cell-type differentiation in animals.

  6. Yu, Fei

    1. You have accessRestricted Access
      Mutations in SUPPRESSOR OF VARIEGATION1, a Factor Required for Normal Chloroplast Translation, Suppress var2-Mediated Leaf Variegation in Arabidopsis
      Fei Yu, Xiayan Liu, Muath Alsheikh, Sungsoon Park, Steve Rodermel
      Plant Cell Jul 2008, 20 (7) 1786-1804; DOI: https://doi.org/10.1105/tpc.107.054965

      The Arabidopsis var2 variegation mutant has green-and white-sectored leaves due to lack of VAR2, a chloroplast FtsH metalloprotease. Variegation can be suppressed in var2 by impaired chloroplast translation caused by lesions in SVR1 and SVR2, nuclear genes that encode a chloroplast pseudouridine synthase and the ClpR1 subunit of the chloroplast Clp protease, respectively.

Z

  1. Zhang, Hairong

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

  2. Zhang, Min

    1. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

  3. Zhang, Xuemin

    1. You have accessRestricted Access
      RXLR-Mediated Entry of Phytophthora sojae Effector Avr1b into Soybean Cells Does Not Require Pathogen-Encoded Machinery
      Daolong Dou, Shiv D. Kale, Xia Wang, Rays H.Y. Jiang, Nathan A. Bruce, Felipe D. Arredondo, Xuemin Zhang, Brett M. Tyler
      Plant Cell Jul 2008, 20 (7) 1930-1947; DOI: https://doi.org/10.1105/tpc.107.056093

      In this study, the authors show that N-terminal RXLR and dEER motifs, together with flanking sequences, are necessary and sufficient to translocate oomycete effector proteins into host plant cells across the plasma cell membrane. Translocation occurs with purified proteins, indicating that no other pathogen machinery is required.

  4. Zhang, Ziding

    1. You have accessRestricted Access
      Badh2, Encoding Betaine Aldehyde Dehydrogenase, Inhibits the Biosynthesis of 2-Acetyl-1-Pyrroline, a Major Component in Rice Fragrance
      Saihua Chen, Yi Yang, Weiwei Shi, Qing Ji, Fei He, Ziding Zhang, Zhukuan Cheng, Xiangnong Liu, Mingliang Xu
      Plant Cell Jul 2008, 20 (7) 1850-1861; DOI: https://doi.org/10.1105/tpc.108.058917

      2-acetyl-1-pyrroline (2AP) is a potent flavor component that gives fragrant rice varieties a distinctive flavor. This study shows that a functional Badh2 allele present in nonfragrant rice varieties encodes an enzyme that inhibits 2AP synthesis by exhausting its precursor, whereas null badh2 alleles, found in fragrant rice varieties, result in 2AP accumulation due to a lack of active BADH2 enzyme.

  5. Zhu, Jian-Kang

    1. Open Access
      SCREAM/ICE1 and SCREAM2 Specify Three Cell-State Transitional Steps Leading to Arabidopsis Stomatal Differentiation
      Masahiro M. Kanaoka, Lynn Jo Pillitteri, Hiroaki Fujii, Yuki Yoshida, Naomi L. Bogenschutz, Junji Takabayashi, Jian-Kang Zhu, Keiko U. Torii
      Plant Cell Jul 2008, 20 (7) 1775-1785; DOI: https://doi.org/10.1105/tpc.108.060848

      Stomata are formed through a series of events: initiation, proliferation, and terminal differentiation. This work identifies the upstream regulator of the cold-induced transcriptome as the core component of stomatal differentiation and suggests a model strikingly similar to cell-type differentiation in animals.

    2. Open Access
      Dolichol Biosynthesis and Its Effects on the Unfolded Protein Response and Abiotic Stress Resistance in Arabidopsis
      Hairong Zhang, Kiyoshi Ohyama, Julie Boudet, Zhizhong Chen, Jilai Yang, Min Zhang, Toshiya Muranaka, Christophe Maurel, Jian-Kang Zhu, Zhizhong Gong
      Plant Cell Jul 2008, 20 (7) 1879-1898; DOI: https://doi.org/10.1105/tpc.108.061150

      This work describes the isolation and biochemical characterization of the leaf wilting1 (lew1) gene that is responsible for the biosynthesis of dolichols in Arabidopsis. Genetic, molecular, and physiological analyses of the glycosylation defective lew1 mutant show that drought stress signaling converges with endoplasmic reticulum (ER) signaling to regulate ER/UPR (unfolded protein response) and osmotic stress responses.

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The Plant Cell Online: 20 (7)
The Plant Cell
Vol. 20, Issue 7
July 2008
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  • Table of Contents (PDF)
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