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Involvement of berry hormonal content in the response to pre‐ and post‐veraison water deficit in different grapevine ( V itis vinifera L .) cultivars
Author(s) -
Niculcea M.,
López J.,
SánchezDíaz M.,
Carmen Antolín M.
Publication year - 2014
Publication title -
australian journal of grape and wine research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.65
H-Index - 77
eISSN - 1755-0238
pISSN - 1322-7130
DOI - 10.1111/ajgw.12064
Subject(s) - veraison , berry , deficit irrigation , jasmonic acid , phenology , abscisic acid , vitis vinifera , cultivar , horticulture , salicylic acid , biology , irrigation , agronomy , irrigation management , biochemistry , genetics , gene
Abstract Background and Aims The application of deficit irrigation to grapevines modifies the hormonal status of berries, but little information about the influence of berry hormones on phenological sensitivity to water deficit is available. Therefore, the aim of this research was to assess the involvement of berry hormonal status in fruit composition in response to regulated deficit irrigation applied during different phenological stages in two grapevine cultivars. Methods and Results The study was carried out on fruiting cuttings of two cultivars of V itis vinifera L ., T empranillo and G raciano. Treatments were: (i) early water deficit from fruitset to onset of veraison (early deficit); (ii) late water deficit from onset of veraison to harvest (late deficit); and (iii) plants regularly irrigated (Control). Both early water deficit and late water‐deficit strategies modified evolution of indole‐3‐acetic acid, abscisic acid, salicylic acid and jasmonic acid, which was related to changes in berry size, increases in phenolic substances and accumulation of amines. Conclusions Differential sensitivity of T empranillo and G raciano grapevines to seasonal water stress was mediated, at least in part, by alterations in hormonal status of berries at the time of water stress imposition. Significance of Study This study relates interspecific differences in the sensitivity of seasonal water‐deficit irrigation to changes in the endogenous hormonal status of berries.