The Sulfated Laminarin Triggers a Stress Transcriptome before Priming the SA- and ROS-Dependent Defenses during Grapevine’s Induced Resistance against Plasmopara viticola
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Altres documents de l'autoria: Gauthier, Adrien; Trouvelot, Sophie; Kelloniemi, Jani; Frettinger, Patrick; Wendehenne, David; Daire, Xavier; Joubert, Jean-Marie; Ferrarini, Alberto; Delledonne, Massimo; Flors, Victor; Poinssot, Benoit
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The Sulfated Laminarin Triggers a Stress Transcriptome before Priming the SA- and ROS-Dependent Defenses during Grapevine’s Induced Resistance against Plasmopara viticolaAutoria
Data de publicació
2014Editor
Public Library of ScienceISSN
1932-6203Cita bibliogràfica
Gauthier A, Trouvelot S, Kelloniemi J, Frettinger P, Wendehenne D, Daire X, et al. (2014) The Sulfated Laminarin Triggers a Stress Transcriptome before Priming the SA- and ROS-Dependent Defenses during Grapevine's Induced Resistance against Plasmopara viticola. PLoS ONE 9(2): e88145. doi:10.1371/journal.pone.0088145Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.p ...Resum
Grapevine (Vitis vinifera) is susceptible to many pathogens which cause significant losses to viticulture worldwide. Chemical
control is available, but agro-ecological concerns have raised interest in alternative ... [+]
Grapevine (Vitis vinifera) is susceptible to many pathogens which cause significant losses to viticulture worldwide. Chemical
control is available, but agro-ecological concerns have raised interest in alternative methods, especially in triggering plant
immunity by elicitor treatments. The b-glucan laminarin (Lam) and its sulfated derivative (PS3) have been previously
demonstrated to induce resistance in grapevine against downy mildew (Plasmopara viticola). However, if Lam elicits classical
grapevine defenses such as oxidative burst, pathogenesis-related (PR)-proteins and phytoalexin production, PS3 triggered
grapevine resistance via a poorly understood priming phenomenon. The aim of this study was to identify the molecular
mechanisms of the PS3-induced resistance. For this purpose we studied i) the signaling events and transcriptome
reprogramming triggered by PS3 treatment on uninfected grapevine, ii) grapevine immune responses primed by PS3
during P. viticola infection. Our results showed that i) PS3 was unable to elicit reactive oxygen species (ROS) production,
cytosolic Ca2+ concentration variations, mitogen-activated protein kinase (MAPK) activation but triggered a long lasting
plasma membrane depolarization in grapevine cells, ii) PS3 and Lam shared a common stress-responsive transcriptome
profile that partly overlapped the salicylate- (SA) and jasmonate-(JA)-dependent ones. After P. viticola inoculation, PS3
specifically primed the SA- and ROS-dependent defense pathways leading to grapevine induced resistance against this
biotroph. Interestingly pharmacological approaches suggested that the plasma membrane depolarization and the
downstream ROS production are key events of the PS3-induced resistance [-]
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PLoS ONE, February 2014, Volume 9, Issue 2, e88145Drets d'accés
info:eu-repo/semantics/openAccess
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Except where otherwise noted, this item's license is described as © 2014 Gauthier et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.