Riboflavin applications to Tempranillo vine: Effect on grape amino acid composition

Trabajo presentado en el 10th In Vino Analytica Scientia Symposium, celebrado en Salamanca (España), del 17 al 20 de julio de 2017
Nitrogen is the most abundant macronutrient in vines, and plays a major role in many of the biological functions and processes . Viticulture practices, as the use of pesticides, have shown to produce deleterious effects for grape. Foliar application of elicitors to vineyard include fast and efficient assimilation of applied products by plant; hence, costs are reduced and it contributes to sustainable and eco-friendly agriculture. Application of elicitors to grapevine is actively being explored not only as a protective aid against pathogens, but also as a means to favor the production of secondary metabolites that can improve the grape quality in a cost-effective way [2-5]. Riboflavin (vitamin B2) is a water-soluble vitamin which is distributed in nature and found in a wide variety of foods [6], with a reported capacity to protect different plant species including grapevines [7]. Bearing in mind that riboflavin shows eliciting capacity, that it presents a nitrogenated structure, which can also be assimilated by yeasts, and that most vitamin synthesis is linked to plant nitrogen metabolism, we hypothesized that riboflavin could be a potential candidate to enhance grape properties. Thus, the aim of this work was to study the influence of foliar application of riboflavin to vines on grape nitrogen composition
R. G.-S. thanks the Gobierno de La Rioja for her contract. T. G.-C. also thanks MINECO for funding her Ramón y Cajal contract. E.P. Pérez-Álvarez thanks the Gobierno de La Rioja for her contract by the project PR-03-16.