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Differential responses of sugar, organic acids and anthocyanins to source-sink modulation in Cabernet Sauvignon and Sangiovese grapevines

dc.rights.licenseopenen_US
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorBOBEICA, Natalia
dc.contributor.authorPONI, Stefano
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorGODINAUD, Ghislaine
IDREF: 225640449
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorRENAUD, Christel
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorGOMES, Eric
IDREF: 102208093
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorDELROT, Serge
IDREF: 058711503
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorDAI, Zhanwu
IDREF: 22822473X
dc.date.accessioned2020-03-22T09:40:10Z
dc.date.available2020-03-22T09:40:10Z
dc.date.issued2015
dc.identifier.issn1664-462Xen_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/3899
dc.description.abstractEnGrape berry composition mainly consists of primary and secondary metabolites. Both are sensitive to environment and viticultural management. As a consequence, climate change can affect berry composition and modify wine quality and typicity. Leaf removal techniques can impact berry composition by modulating the source-to-sink balance and, in turn, may mitigate some undesired effects due to climate change. The present study investigated the balance between technological maturity parameters such as sugars and organic acids, and phenolic maturity parameters such as anthocyanins in response to source-sink modulation. Sugar, organic acid, and anthocyanin profiles were compared under two contrasting carbon supply levels in berries of cv. Cabernet Sauvignon and Sangiovese collected at 9 and 14 developmental stages respectively. In addition, whole-canopy net carbon exchange rate was monitored for Sangiovese vines and a mathematic model was used to calculate the balance between carbon fixation and berry sugar accumulation. Carbon limitation affected neither berry size nor the concentration of organic acids at harvest. However, it significantly reduced the accumulation of sugars and total anthocyanins in both cultivars. Most interestingly, carbon limitation decreased total anthocyanin concentration by 84.3% as compared to the non source-limited control, whereas it decreased sugar concentration only by 27.1%. This suggests that carbon limitation led to a strong imbalance between sugars and anthocyanins. Moreover, carbon limitation affected anthocyanin profiles in a cultivar dependent manner. Mathematical analysis of carbon-balance indicated that berries used a higher proportion of fixed carbon for sugar accumulation under carbon limitation (76.9%) than under carbon sufficiency (48%). Thus, under carbon limitation, the grape berry can manage the metabolic fate of carbon in such a way that sugar accumulation is maintained at the expense of secondary metabolites.
dc.language.isoENen_US
dc.subjectVitis Vinifera
dc.subjectVigne
dc.subjectSangiovese
dc.subjectVignoble
dc.subjectCanopée
dc.subjectMétabolite
dc.subjectAnthocyanine
dc.subjectQualité de la baie
dc.subjectTypicité du vin
dc.subjectMaturité phénolique
dc.subjectAccumulation du carbone
dc.subjectAcide organique
dc.subjectAnalyse mathématique
dc.subjectCabernet Sauvignon
dc.subjectBaie de raisin
dc.subjectChangement climatique
dc.subject.enVitis Vinifera L
dc.subject.enWine Alcohol Content
dc.subject.enWine Color
dc.subject.enClimate Change
dc.subject.enLeaf-To-Fruit Ratio
dc.subject.enBerry Composition
dc.title.enDifferential responses of sugar, organic acids and anthocyanins to source-sink modulation in Cabernet Sauvignon and Sangiovese grapevines
dc.typeArticle de revueen_US
dc.identifier.doi10.3389/fpls.2015.00382en_US
dc.subject.halSciences du Vivant [q-bio]/Biologie végétaleen_US
bordeaux.journalFrontiers in Plant Scienceen_US
bordeaux.page14 p.en_US
bordeaux.volume6en_US
bordeaux.hal.laboratoriesEcophysiologie et Génomique Fonctionnelle de la Vigne (EGFV) - UMR 1287en_US
bordeaux.institutionBordeaux Sciences Agroen_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.identifierhal-02514390
hal.version1
hal.date.transferred2020-03-22T09:40:14Z
hal.exporttrue
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