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Dihydrosphingosine-Induced Programmed Cell Death in Tobacco BY-2 Cells Is Independent of H2O2 Production

01/03/2011 00:00

Christophe Lachaud, Daniel Da Silva, Nicolas Amelot, Chloé Béziat, Christian Brière, Valérie Cotelle, Annick Graziana, Sabine Grat, Christian Mazars and Patrice Thuleau Abstract: Sphinganine or dihydrosphingosine (d18:0, DHS), one of the most abundant free sphingoid Long Chain Base (LCB) in...

Detection and functional characterization of a 215 amino acid N-terminal extension in the Xanthomonas type III effector XopD

12/22/2010 00:00

Joanne Canonne, Daniel Marino, Laurent D. Noël, Ignacio Arechaga, Carole Pichereaux, Michel Rossignol, Dominique Roby and Susana Rivas Abstract: During evolution, pathogens have developed a variety of strategies to suppress plant-triggered immunity and promote successful infection. In...

Predicting the substrate specificity of a glycosyltransferase implicated in the production of phenolic volatiles in tomato fruit

12/17/2010 00:00

Thomas Louveau, Céline Leitao, Sol Green, Cyril Hamiaux, Benoît van der Rest, Odile Dechy-Cabaret, Ross G. Atkinson and Christian Chervin Abstract: The volatile compounds that constitute the fruit aroma of ripe tomato (Solanum lycopersicum) are often sequestered in glycosylated form. A...

Both Plant and Bacterial Nitrate Reductases Contribute to Nitric Oxide Production in Medicago truncatula Nitrogen-Fixing Nodules

12/07/2010 00:00

Faouzi Horchani, Marianne Prévot, Alexandre Boscari, Edouard Evangelisti, Eliane Meilhoc, Claude Bruand, Philippe Raymond, Eric Boncompagni, Samira Aschi-Smiti, Alain Puppo and Renaud Brouquisse Abstract: Nitric oxide (NO) is a signaling and defense molecule of major importance in living...

Autoacetylation of the Ralstonia solanacearum effector PopP2 targets a lysine residue essential for RRS1-R-mediated immunity in Arabidopsis

11/18/2010 00:00

Tasset C, Bernoux M, Jauneau A, Pouzet C, Brière C, Kieffer-Jacquinod S, Rivas S, Marco Y, Deslandes L Abstract: Type III effector proteins from bacterial pathogens manipulate components of host immunity to suppress defence responses and promote pathogen development. In plants, host proteins...

The regulation of arbuscular mycorrhizal symbiosis by phosphate in pea involves early and systemic signalling events

11/02/2010 00:00

Coline Balzergue, Virginie Puech-Pagès, Guillaume Bécard and Soizic F. Rochange Abstract: Most plants form root symbioses with arbuscular mycorrhizal (AM) fungi, which provide them with phosphate and other nutrients. High soil phosphate levels are known to affect AM symbiosis negatively, but...

Insights into the extracytoplasmic stress response of Xanthomonas campestris pv. campestris: role and regulation of {sigma}E-dependent activity

10/22/2010 00:00

Bordes P, Lavatine L, Phok K, Barriot R, Boulanger A, Castanié-Cornet MP, Déjean G, Lauber E, Becker A, Arlat M, Gutierrez C. Abstract: Xanthomonas campestris pv. campestris is an epiphytic bacterium that can become a vascular pathogen responsible for black rot disease of crucifers. To adapt...

RD20, a Stress-Inducible Caleosin, Participates in Stomatal Control, Transpiration and Drought Tolerance in Arabidopsis thaliana

10/14/2010 00:00

Yann Aubert, Denis Vile, Marjorie Pervent, Didier Aldon, Benoit Ranty, Thierry Simonneau, Alain Vavasseur and Jean-Philippe Galaud Abstract: Plants overcome water deficit conditions by combining molecular, biochemical and morphological changes. At the molecular level, many stress-responsive...

Light-regulated compensation of wat1 (walls are thin1) growth and secondary cell wall phenotypes is auxin-independent

10/01/2010 00:00

Nicolas Denancé, Philippe Ranocha, Yves Martinez, Björn Sundberg, Deborah Goffner Abstract: We previously reported the characterization of walls are thin1 (wat1), an Arabidopsis mutant that exhibits two developmental phenotypes in stems: (1) a severe decrease in fiber secondary cell wall...

AtsPLA2-α nuclear relocalization by the Arabidopsis transcription factor AtMYB30 leads to repression of the plant defense response

08/24/2010 00:00

Solène Froidure, Joanne Canonne, Xavier Daniela, Alain Jauneau, Christian Brière, Dominique Roby, and Susana Rivas Abstract: The hypersensitive response (HR), characterized by a rapid and localized cell death at the inoculation site, is one of the most efficient resistance reactions to...

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