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Role of plant carbon status in yield components responses to elevated temperatures in microvine

hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
hal.structure.identifierInstitut national d’études supérieures agronomiques de Montpellier [Montpellier SupAgro]
dc.contributor.authorLUCHAIRE, Nathalie
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
hal.structure.identifierFondation Jean Poupelain
hal.structure.identifierHaute école de viticulture et oenologie
dc.contributor.authorRIENTH, Markus
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
dc.contributor.authorROMIEU, Charles
hal.structure.identifierAmélioration génétique et adaptation des plantes méditerranéennes et tropicales [UMR AGAP]
hal.structure.identifierInstitut national d’études supérieures agronomiques de Montpellier [Montpellier SupAgro]
dc.contributor.authorTORREGROSA, Laurent
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorGIBON, Yves
hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
dc.contributor.authorTURC, Olivier
hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
dc.contributor.authorMULLER, Bertrand
hal.structure.identifierÉcophysiologie des Plantes sous Stress environnementaux [LEPSE]
hal.structure.identifierInstitut national d’études supérieures agronomiques de Montpellier [Montpellier SupAgro]
dc.contributor.authorPELLEGRINO, Anne
dc.date.issued2015
dc.date.conference2015-05-31
dc.description.abstractEnGrapevine yield sustainability under global warming is a major issue. A hypothesis is that long-term elevated temperatures may cause the failure of key phases of reproductive development, through their negative impact on carbon balance. However, testing the specific role of plant carbon status on yield elaboration under elevated temperatures is difficult on perennial crops, such as grapevine, and when environment fluctuates. To overcome these difficulties, the present work was conducted under fully controlled environment using Microvine, a new model for grapevine genetics and physiological studies. Five experiments were performed ingrowth chambers, applying contrasted day/night temperature over a one- to two-month period. Plant phenology, vegetative development and yield components were assessed before and after temperature treatments. In addition, the biomass growth and sugar contents of all individual above-ground organs and of roots were determined at harvest. High temperatures caused inflorescence abscission, but did not change flower and berry numbers on the remaining bunches. Flowering and véraison were also delayed by warm temperatures, on a thermal time basis. In contrast, plant phyllochron and biomass accumulation were unchanged. Carbon status in roots was altered under high temperatures, thus indicating carbon gain was impaired with sink demand. These results suggest that dynamics of carbohydrate pool within perennial organs act as an adjusting variable to buffer changes in carbon balance. This study provides the first basis for a modelling approach of yield responses to carbon balance under climate changes
dc.language.isoen
dc.source.titleComptes-rendus GiESCO
dc.subjectrendement agricole
dc.subjectstress abiotique
dc.subjectvigne
dc.subjectfilière viticole
dc.subjectbilan de carbone
dc.subjectviticulture
dc.subjectchangement climatique
dc.subject.enabiotic stress
dc.subject.entemperature
dc.subject.encarbohydrates
dc.subject.enyield
dc.subject.enmicrovine
dc.subject.engrapevine
dc.subject.encarbon balance
dc.subject.englobal change
dc.title.enRole of plant carbon status in yield components responses to elevated temperatures in microvine
dc.typeCommunication dans un congrès
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
bordeaux.page810 p.
bordeaux.countryFR
bordeaux.title.proceedingComptes-rendus GiESCO
bordeaux.conference.cityGruissan
bordeaux.peerReviewedoui
hal.identifierhal-01506406
hal.version1
hal.invitednon
hal.proceedingsoui
hal.conference.end2015-06-05
hal.popularnon
hal.audienceNon spécifiée
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01506406v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.btitle=Comptes-rendus%20GiESCO&rft.date=2015&rft.spage=810%20p.&rft.epage=810%20p.&rft.au=LUCHAIRE,%20Nathalie&RIENTH,%20Markus&ROMIEU,%20Charles&TORREGROSA,%20Laurent&GIBON,%20Yves&rft.genre=unknown


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