0000000000713636

AUTHOR

Stephane Bourque

showing 4 related works from this author

Stimuler l’immunité de la vigne : un levier pour réduire les traitements fongicides ?

2021

Les stimulateurs de défense des plantes (SDP ou éliciteurs) font partie des méthodes visant à réduire les doses de produits phytosanitaires, donc l’Indicateur de Fréquence de Traitements (IFT), et à ce titre ils font l’objet d’une forte attente de la part des viticulteurs. Plusieurs produits sont homologués en viticulture depuis quelques années. Hormis les phosphonates (à la fois SDP et fongicides) dont l’efficacité est reproductible, celle des autres SDP s’avère encore assez variable. Ainsi leur intégration dans les programmes de protection du vignoble pose encore de nombreuses questions. Des recherches se poursuivent pour mieux caractériser les réponses de défense de la vigne au champ et …

[SDE] Environmental SciencesSDPéliciteursbiocontrôlevignedéfense des plantesimmunité
researchProduct

Effets comparés des élicitines et caractérisation de leur site de fixation chez le tabac

1999

* INRA URD BP 86510 21065 Dijon cedex (FRA) Diffusion du document : INRA URD BP 86510 21065 Dijon cedex (FRA) Diplôme : Dr. d'Université

[SDV] Life Sciences [q-bio]CULTURE DE CELLULE[SDV]Life Sciences [q-bio]CRYTPTOGEINETECHNIQUE DES TRACEURS
researchProduct

NO signaling in tobacco elicited by the MAMP cryptogein

2015

SPEPôle IPM; International audience; During the past years, nitric oxide (NO) has been shown to be a major cell signaling messenger in plants. Its importance has been highlighted during plant responses to pathogen attack or MAMPs (microbe associated molecular patterns) and during induced resistance or priming phenomenon. The major focus of our research is to understand how nitric oxide can modulate the activity of protein involved in plant defense. We identified several proteins undergoing S-nitrosylation, a redox-based post-translational modification of proteins, in tobacco cells elicited by cryptogein, a 10 kDa protein produced by the oomycete Phytophthora cryptogea and inducing immune re…

[SDV] Life Sciences [q-bio]Plant defenseMAMP[SDV]Life Sciences [q-bio]CryptogeinNO
researchProduct

Involvement of plasma membrane proteins in plant defense responses. Analysis of the cryptogein signal transduction in tobacco

1999

International audience; Cryptogein, a 98 amino acid protein secreted by the fungus Phytophthora cryptogea, induces a hypersensitive response and systemic acquired resistance in tobacco plants (Nicotiana tabacum var Xanthi). The mode of action of cryptogein has been studied using tobacco cell suspensions. The recognition of this elicitor by a plasma membrane receptor leads to a cascade of events including protein phosphorylation, calcium influx, potassium and chloride effluxes, plasma membrane depolarization, activation of a NADPH oxidase responsible for active oxygen species (AOS) production and cytosol acidification, activation of the pentose phosphate pathway, and activation of two mitoge…

0106 biological sciencesHypersensitive responseNicotiana tabacum01 natural sciencesBiochemistryFungal Proteins03 medical and health sciencesTobacco[SDV.BBM] Life Sciences [q-bio]/Biochemistry Molecular BiologyAnimals[SDV.BV]Life Sciences [q-bio]/Vegetal BiologyProtein phosphorylation[SDV.BBM]Life Sciences [q-bio]/Biochemistry Molecular Biology030304 developmental biologyPlant Proteins0303 health sciencesbiologyAlgal ProteinsCell MembraneMembrane Proteinsfood and beveragesGeneral Medicinebiology.organism_classificationElicitorCell biologyCytosolPlants ToxicMembrane proteinBiochemistrySecond messenger systemREPONSE DE LA PLANTESignal transduction010606 plant biology & botanySignal Transduction
researchProduct