Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja, CSIC, Universidad de La Rioja), Ctra. de Burgos, Km. 6, 26007 Logroño, Spain.
Instituto de Ciencias de la Vid y del Vino (Gobierno de La Rioja, CSIC, Universidad de La Rioja), Ctra. de Burgos, Km. 6, 26007 Logroño, Spain.
Food Chem. 2018 Apr 1;244:159-163. doi: 10.1016/j.foodchem.2017.10.067. Epub 2017 Oct 12.
Vine foliar applications of phenylalanine (Phe) or methyl jasmonate (MeJ) could improve the synthesis of secondary metabolites. However, there are no reports focusing on the effects of elicitation supported by precursor feeding on must amino acid composition in grapevines. The aim of this research was to study the effect of the elicitation of methyl jasmonate (MeJ) supported by phenylalanine (Phe) as a precursor feeding (MeJ+Phe) and its application individually on must amino acid composition. Results showed that foliar Phe and MeJ treatments decreased the concentration of most of the studied amino acids with respect to the control (p≤0.05). MeJ+Phe treatment did not affect must nitrogen content. Musts obtained from MeJ+Phe showed higher concentration of several amino acids than samples from Phe and MeJ applications. Therefore, other sources of precursor feeding could support elicitation, to improve amino acid composition and be considered as a tool for viticulture.
叶面喷施苯丙氨酸（Phe）或茉莉酸甲酯（MeJ）可以促进次生代谢产物的合成。然而，目前尚无关于前体喂养支持的激发对葡萄必需氨基酸组成影响的报道。本研究旨在研究茉莉酸甲酯（MeJ）激发与苯丙氨酸（Phe）前体喂养（MeJ+Phe）及其单独应用对葡萄汁必需氨基酸组成的影响。结果表明，与对照相比（p≤0.05），叶面喷施 Phe 和 MeJ 处理降低了大多数研究氨基酸的浓度。MeJ+Phe 处理对葡萄汁氮含量没有影响。与 Phe 和 MeJ 处理的样品相比，MeJ+Phe 处理获得的葡萄汁中几种氨基酸的浓度更高。因此，其他前体喂养来源可以支持激发，以改善氨基酸组成，并可作为葡萄栽培的一种工具。
