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Stomatal conductance and root-to-shoot signalling in chestnut saplings exposed to Phytophthora cinnamomi or partial soil drying

hal.structure.identifierBiodiversité, Gènes et Ecosystèmes [BioGeCo]
dc.contributor.authorMAUREL, Marion
hal.structure.identifierBiodiversité, Gènes et Ecosystèmes [BioGeCo]
dc.contributor.authorROBIN, Cécile
hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
dc.contributor.authorSIMONNEAU, Thierry
hal.structure.identifierUnité de recherches forestières [BORDX PIERR UR ]
dc.contributor.authorLOUSTAU, Denis
hal.structure.identifierEcologie et Ecophysiologie Forestières [devient SILVA en 2018] [EEF]
dc.contributor.authorDREYER, Erwin
hal.structure.identifierBiodiversité, Gènes et Ecosystèmes [BioGeCo]
dc.contributor.authorDESPREZ-LOUSTAU, Marie Laure
dc.date.issued2004
dc.identifier.issn1445-4408
dc.description.abstractEnThe effects of root infection by Phytophthora cinnamomi on stomatal conductance in Castanea sativa L. saplings were investigated to determine the potential role of root-derived chemical signals. A split-root experiment was carried out, in which inoculation of the pathogen or drought was applied to the root systems in either one or both compartments. At the end of the experiment plant sap extracts were collected and their effects on stomatal conductance were determined by leaf bioassay. Inoculation or drought imposed in both compartments resulted in decreases in stomatal conductance (g(s)), transpiration rate, soil-to-leaf specific hydraulic conductance, leaf water potential, xylem [ABA] and root biomass, but not in the ratio of root-to-leaf mass in inoculated plants. Conversely, only gs and xylem [ABA] were affected in plants inoculated or droughted in one compartment, and no changes were detectable in leaf water potential and soil-to-leaf specific hydraulic conductance. The leaf bioassay showed that gs in chestnut was sensitive to ABA but not to Phytophthora elicitins. Stomatal conductance was reduced by some sap extracts, both from control and inoculated plants. Our results suggest the involvement of different signals, chemical and hydraulic, in regulating stomatal conductance of chestnut at different stages of stress
dc.language.isoen
dc.publisherCSIRO Publishing
dc.subjectCASTANEA SATIVA L.
dc.subjectSTOMATAL CONDUCTANCE
dc.subjectACIDE ABSCISSIQUE
dc.subject.enPHYTOPHTHORA CINNAMOMI
dc.subject.enABA
dc.subject.enSPLIT ROOT
dc.subject.enWATER STRESS
dc.title.enStomatal conductance and root-to-shoot signalling in chestnut saplings exposed to Phytophthora cinnamomi or partial soil drying
dc.typeArticle de revue
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalFunctional Plant Biology
bordeaux.page41-51
bordeaux.volume31
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-02678692
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02678692v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Functional%20Plant%20Biology&rft.date=2004&rft.volume=31&rft.issue=1&rft.spage=41-51&rft.epage=41-51&rft.eissn=1445-4408&rft.issn=1445-4408&rft.au=MAUREL,%20Marion&ROBIN,%20C%C3%A9cile&SIMONNEAU,%20Thierry&LOUSTAU,%20Denis&DREYER,%20Erwin&rft.genre=article


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