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Ultraviolet-B alleviates the uncoupling effect of elevated CO2 and increased temperature on grape berry (Vitis vinifera cv. Tempranillo) anthocyanin and sugar accumulation

dc.rights.licenseopenen_US
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorMARTINEZ LUSCHER, Johann
dc.contributor.authorSÁNCHEZ-DÍAZ, M.
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorDELROT, Serge
IDREF: 058711503
dc.contributor.authorPASCUAL, I.
hal.structure.identifierEcophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV]
dc.contributor.authorGOMES, Eric
IDREF: 102208093
dc.date.accessioned2020-03-29T10:17:28Z
dc.date.available2020-03-29T10:17:28Z
dc.date.issued2016
dc.identifier.issn1322-7130en_US
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/3998
dc.description.abstractEnBackground and Aims Atmospheric carbon dioxide (CO2) levels and temperature are expected to increase in the next decades. In addition, changes in climate as well as the stratospheric ozone concentration may affect the exposure of viticultural regions to UV-B. The aim of the present study was to investigate the effect of combined elevated CO2 and increased temperature (+CO2/+T) regimes and UV-B radiation on anthocyanin and flavonol biosynthesis in grape berries.[br/] Methods and Results Three UV-B doses [0, 5.98 and 9.66 kJ/(m2·d)] and two CO2–day/night temperature regimes (390 μmol/mol CO2–24/14°C and 700 μmol/mol CO2–28/18°C) were imposed on Vitis vinifera cv. Tempranillo fruit-bearing cuttings from fruitset to maturity. Berry mass, composition and expression of selected genes were monitored. The time to reach veraison and maturity was reduced under +CO2/+T. Anthocyanin concentration under +CO2/+T was higher 2 weeks after veraison, but lower at maturity. Ultraviolet-B radiation slowed berry development and upregulated flavonol and anthocyanin biosynthesis.[br/] Conclusions The effect of UV-B, which modulates the accumulation of sugars and upregulates anthocyanin biosynthesis, compensated the deleterious effect of elevated CO2 and increased temperature on berry anthocyanin concentration.[br/] Significance of the Study Certain viticultural practices, such as leaf removal, that modify the exposure of grapes to UV-B and the leaf surface to fruit mass ratio, may alleviate the effect of elevated CO2 and increased temperature on grape anthocyanin concentration.
dc.language.isoENen_US
dc.subjectChangement climatique
dc.subjectUltraviolet
dc.subjectFlavonoïde
dc.subjectDioxyde de carbone
dc.subjectAnthocyanine
dc.subjectVitis Vinifera
dc.subjectChangement de température
dc.subject.enClimate Change
dc.subject.enFlavonoids
dc.subject.enNitrogen Compounds
dc.subject.enOrganic Acid
dc.subject.enUltraviolet-B
dc.title.enUltraviolet-B alleviates the uncoupling effect of elevated CO2 and increased temperature on grape berry (Vitis vinifera cv. Tempranillo) anthocyanin and sugar accumulation
dc.typeArticle de revueen_US
dc.identifier.doi10.1111/ajgw.12213en_US
dc.subject.halSciences du Vivant [q-bio]/Biologie végétaleen_US
bordeaux.journalAustralian Journal of Grape and Wine Researchen_US
bordeaux.page87-95en_US
bordeaux.volume22en_US
bordeaux.hal.laboratoriesEcophysiologie et Génomique Fonctionnelle de la Vigne (EGFV) - UMR 1287en_US
bordeaux.issue1en_US
bordeaux.institutionBordeaux Sciences Agroen_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.identifierhal-02523572
hal.version1
hal.date.transferred2020-03-29T10:17:32Z
hal.exporttrue
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