Increasing the Phenolic Compound Content of Grapes by Preharvest Application of Abcisic Acid and a Combination of Methyl Jasmonate and Benzothiadiazole
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- 作者：Yolanda Ruiz-Garc铆a ; Roc铆o Gil-Mu帽oz ; Jose Mar铆a L贸pez-Roca ; Adri谩n Mart铆nez-Cutillas ; Inmaculada Romero-Cascales ; Encarna G贸mez-Plaza
- 刊名：Journal of Agricultural and Food Chemistry
- 出版年：2013
- 出版时间：April 24, 2013
- 年：2013
- 卷：61
- 期：16
- 页码：3978-3983
- 全文大小：208K
- 年卷期：v.61,no.16(April 24, 2013)
- ISSN：1520-5118
文摘
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.