title: Methyl jasmonate foliar application to Tempranillo vineyard improved grape and wine phenolic content.
abstract: The importance of phenolic compounds for grape and wine quality has drawn attention to studying different practices with the aim of increasing their content. Cluster application of elicitors is a viticultural practice that has shown promising results in recent years. However, cluster application requires a previous defoliation, which is time-consuming and expensive. In the present study, methyl jasmonate was foliar applied to Tempranillo grapevines in order to study its effect on grape and wine phenolic composition. Methyl jasmonate foliar application increased anthocyanin and stilbene content in both grape and wine, besides enhancing wine flavonol content. This treatment induced the synthesis of 3-O-glucosides of petunidin and peonidin and trans-p-coumaroyl derivatives of cyanidin and peonidin. For stilbenes, trans-piceid content was considerably increased in both grape and wine. The results obtained suggest that methyl jasmonate foliar application could be a simple and accessible practice to enhance grape and wine quality.
authors: Instituto de Ciencias de la Vid y del Vino, (Gobierno de La Rioja, Universidad de La Rioja, Consejo Superior de Investigaciones Científicas) , Carretera de Mendavia-Logroño NA 134, km 90, 26071 Logroño, La Rioja, Spain.
authors: Javier
authors: J
authors: Portu
authors: Pilar
authors: P
authors: Santamaría
authors: Isabel
authors: I
authors: López-Alfaro
authors: Rosa
authors: R
authors: López
authors: Teresa
authors: T
authors: Garde-Cerdán
mesh_terms: D000085:Acetates / Q000494:pharmacology*; D003517:Cyclopentanes / Q000494:pharmacology*; D005421:Flavoring Agents / Q000737:chemistry; D005638:Fruit / Q000737:chemistry / Q000187:drug effects / Q000254:growth & development; D054883:Oxylipins / Q000494:pharmacology*; D010636:Phenols / Q000737:chemistry*; D010937:Plant Growth Regulators / Q000494:pharmacology*; D027843:Vitis / Q000737:chemistry* / Q000187:drug effects* / Q000254:growth & development; D014920:Wine / Q000032:analysis*
chemical_list: D000085:Acetates; D003517:Cyclopentanes; D005421:Flavoring Agents; D054883:Oxylipins; D010636:Phenols; D010937:Plant Growth Regulators; C072239:methyl jasmonate
keywords: Vitis vinifera L. cv. Tempranillo; anthocyanins; elicitor; flavonols; grapevine treatment; stilbenes