title: Increasing the phenolic compound content of grapes by preharvest application of abcisic acid and a combination of methyl jasmonate and benzothiadiazole.
abstract: Benzothiadiazole (BTH) and methyl jasmonate (MeJ) have been described as exogenous elicitors of some plant defense compounds, polyphenols among them. Given that they activate different arrays of biochemical reactions to induce resistance, the objective of this study was to determine whether the joint application of BTH and MeJ to grape clusters affects the level of the main flavonoid compounds in grapes and in the resulting wines. The results are compared with those obtained when abscisic acid (ABA), a plant growth regulator involved in several physiological processes, was sprayed in the same vineyard. The results obtained indicated that, although the application of ABA increased the content of skin anthocyanins and tannins, these positive effects were not reflected in the wines made from these grapes. BTH+MeJ-treated grapes also presented higher anthocyanin and flavonol contents, and in this case, their wines presented better chromatic characteristics that the wine made from control grapes.
authors.affiliation: Food Science and Technology Deparment, Faculty of Veterinary Science, University of Murcia , Campus de Espinardo, 30071 Murcia, Spain.
authors.forename: Yolanda
authors.initials: Y
authors.lastname: Ruiz-García
authors.forename: Rocío
authors.initials: R
authors.lastname: Gil-Muñoz
authors.forename: Jose María
authors.initials: JM
authors.lastname: López-Roca
authors.forename: Adrián
authors.initials: A
authors.lastname: Martínez-Cutillas
authors.forename: Inmaculada
authors.initials: I
authors.lastname: Romero-Cascales
authors.forename: Encarna
authors.initials: E
authors.lastname: Gómez-Plaza
mesh_terms: D000040:Abscisic Acid / Q000008:administration & dosage*; D000085:Acetates / Q000008:administration & dosage*; D000872:Anthocyanins / Q000032:analysis; D003517:Cyclopentanes / Q000008:administration & dosage*; D005419:Flavonoids / Q000032:analysis*; D005638:Fruit / Q000737:chemistry* / Q000187:drug effects; D054883:Oxylipins / Q000008:administration & dosage*; D010937:Plant Growth Regulators; D013830:Thiadiazoles / Q000008:administration & dosage*; D027843:Vitis / Q000737:chemistry* / Q000187:drug effects; D014920:Wine / Q000032:analysis
chemical_list: D000085:Acetates; D000872:Anthocyanins; D003517:Cyclopentanes; D005419:Flavonoids; D054883:Oxylipins; D010937:Plant Growth Regulators; D013830:Thiadiazoles; C015700:benzo-1,2,3-thiadiazole; D000040:Abscisic Acid; C072239:methyl jasmonate