title: Effect of methyl jasmonate application to grapevine leaves on grape amino acid content.
abstract: Over the last few years, considerable attention has been paid to the application of elicitors to vineyard. However, research about the effect of elicitors on grape amino acid content is scarce. Therefore, the aim of this study was to evaluate the influence of foliar application of methyl jasmonate on must amino acid content. Results revealed that total amino acid content was not modified by the application of methyl jasmonate. However, the individual content of certain amino acids was increased as consequence of methyl jasmonate foliar application, i.e., histidine, serine, tryptophan, phenylalanine, tyrosine, asparagine, methionine, and lysine. Among them, phenylalanine content was considerably increased; this amino acid is precursor of phenolic and aromatic compounds. In conclusion, foliar application of methyl jasmonate improved must nitrogen composition. This finding suggests that methyl jasmonate treatment might be conducive to obtain wines of higher quality since must amino acid composition could affect the wine volatile composition and the fermentation kinetics.
authors.affiliation: Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja-CSIC-Universidad de La Rioja), Carretera de Burgos Km. 6, Finca La Grajera, 26007 Logroño, Spain. Electronic address: Teresa.GardeCerdan@gmail.com.
authors.forename: Teresa
authors.initials: T
authors.lastname: Garde-Cerdán
authors.affiliation: Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja-CSIC-Universidad de La Rioja), Carretera de Burgos Km. 6, Finca La Grajera, 26007 Logroño, Spain.
authors.forename: Javier
authors.initials: J
authors.lastname: Portu
authors.affiliation: Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja-CSIC-Universidad de La Rioja), Carretera de Burgos Km. 6, Finca La Grajera, 26007 Logroño, Spain.
authors.forename: Rosa
authors.initials: R
authors.lastname: López
authors.affiliation: Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja-CSIC-Universidad de La Rioja), Carretera de Burgos Km. 6, Finca La Grajera, 26007 Logroño, Spain.
authors.forename: Pilar
authors.initials: P
authors.lastname: Santamaría
mesh_terms: D000085:Acetates / Q000737:chemistry*; D000596:Amino Acids / Q000032:analysis*; D003517:Cyclopentanes / Q000737:chemistry*; D005421:Flavoring Agents / Q000032:analysis*; D005638:Fruit / Q000737:chemistry / Q000254:growth & development; D009584:Nitrogen / Q000032:analysis; D054883:Oxylipins / Q000737:chemistry*; D010636:Phenols / Q000032:analysis; D018515:Plant Leaves / Q000737:chemistry / Q000254:growth & development; D027843:Vitis / Q000737:chemistry* / Q000254:growth & development; D014920:Wine / Q000032:analysis* / Q000592:standards
chemical_list: D000085:Acetates; D000596:Amino Acids; D003517:Cyclopentanes; D005421:Flavoring Agents; D054883:Oxylipins; D010636:Phenols; C072239:methyl jasmonate; D009584:Nitrogen
keywords: Amino acids; Elicitor; Foliar treatment; Grape; Methyl jasmonate