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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Otros documentos de la autoría: 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 viticolaAutoría
Fecha de publicación
2014Editor
Public Library of ScienceISSN
1932-6203Cita bibliográfica
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.0088145Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://www.plosone.org/article/fetchObject.action?uri=info:doi/10.1371/journal.p ...Resumen
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 [-]
Publicado en
PLoS ONE, February 2014, Volume 9, Issue 2, e88145Derechos de acceso
info:eu-repo/semantics/openAccess
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