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Nested effects of berry half, berry and bunch microclimate on biochemical composition in grape

dc.rights.licenseopenen_US
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorPIERI, Philippe
dc.contributor.authorZOTT, Katharina
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.authorGODINAUD, Ghislaine
IDREF: 225640449
dc.date.accessioned2020-03-27T14:38:25Z
dc.date.available2020-03-27T14:38:25Z
dc.date.issued2016
dc.identifier.issn2494-1271en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/3979
dc.description.abstractEnAim: Polyphenol composition, an important component of grape quality, is strongly influenced by fruit microclimate. However, information relies exclusively on whole berry data and the underlying response functions to microenvironment variables remain essentially unknown. The aim of this study was therefore to analyze the biochemical composition of grapes at both bunch and berry scales, in relation with microclimate.[br/] Methods and results: Whole berries and berry halves were sampled in mature defoliated bunches from two neighboring Bordeaux vineyards with contrasting row orientations (Vitis vinifera cv. Merlot). Flavonoid and amino-acid contents were analyzed by HPLC methods. The main sources of variation were bunch azimuth, berry exposure and, only in South-exposed bunches, berry side. Models were used to estimate radiation at the berry surface and temperature. Intense effects of bunch side and berry side on total flavonol and anthocyanin concentrations were observed. These results were all consistent at both bunch and berry scales. However, the most intense effects were observed at berry scale and mitigated by scaling up from berry to bunch.[br/] Conclusion: Total flavonol concentrations in the berry skin exhibited a clear positive linear relationship with solar radiation. The large heterogeneity of composition at berry scale is consistent with the better known heterogeneity at bunch scale.[br/] Significance and impact of the study: Models and original response functions to microclimate could help optimize vineyard management and grape ripening.
dc.language.isoENen_US
dc.subjectPolyphénol
dc.subjectVitis Vinifera
dc.subjectBaie de raisin
dc.subjectVitis Vinifera
dc.subjectFlavonoïde
dc.subjectÉchantillonnage
dc.title.enNested effects of berry half, berry and bunch microclimate on biochemical composition in grape
dc.typeArticle de revueen_US
dc.identifier.doi10.20870/oeno-one.2016.50.3.52en_US
dc.subject.halSciences du Vivant [q-bio]/Biologie végétaleen_US
bordeaux.journalOeno Oneen_US
bordeaux.page23-41en_US
bordeaux.volume50en_US
bordeaux.hal.laboratoriesEcophysiologie et Génomique Fonctionnelle de la Vigne (EGFV) - UMR 1287en_US
bordeaux.issue3en_US
bordeaux.institutionBordeaux Sciences Agroen_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.identifierhal-02521723
hal.version1
hal.date.transferred2020-03-27T14:38:32Z
hal.exporttrue
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