| Title: | Abscisic Acid's Role in the Modulation of Compounds that Contribute to Wine Quality |
| Author(s): | Alonso R; Berli FJ; Fontana A; Piccoli P; Bottini R; |
| Address: | "Grupo de Bioquimica Vegetal, Instituto de Biologia Agricola de Mendoza, Facultad de Ciencias Agrarias, Consejo Nacional de Investigaciones Cientificas y Tecnicas-Universidad Nacional de Cuyo, Almirante Brown 500, 5507 Chacras de Coria, Mendoza, Argentina. Catena Institute of Wine, Bodega Catena Zapata, Cobos s/n, 5509 Agrelo, Mendoza, Argentina. Instituto de Veterinaria, Ambiente y Salud, Universidad Juan A. Maza, Lateral Sur del Acceso Este 2245, 5519 Guaymallen, Mendoza, Argentina" |
| ISSN/ISBN: | 2223-7747 (Print) 2223-7747 (Electronic) 2223-7747 (Linking) |
| Abstract: | "Abscisic acid (ABA) plays a crucial role in the plant responses to environmental signals, in particular by triggering secondary metabolism. High-altitude vineyards in Mendoza, Argentina, are exposed to elevated solar ultraviolet-B (UV-B) levels and moderate water deficits (WD), thus producing grapevine berries with high enological quality for red winemaking. Volatile organic compounds (VOCs) and phenolic compounds (PCs) accumulate in the berry skins, possess antioxidant activity, and are important attributes for red wine. The aim of the present study was to analyze the role of ABA in the modulation of these compounds in Vitis vinifera L. cv. Malbec wines by comparing the independent and interactive effects of UV-B, WD, and ABA. Two UV-B treatments (ambient solar UV-B or reduced UV-B), two watering treatments (well-watered or moderate water deficit) and two ABA treatments (no ABA and sprayed ABA) were given in a factorial design during one growing season. Sprayed ABA, alone and/or in combination with UV-B (specially) and WD (to a lower degree) increased low molecular weight polyphenols (LMWP), anthocyanins, but most noticeably the stilbenes trans-resveratrol and piceid. Under these treatments, VOCs were scarcely affected, and the antioxidant capacity was influenced by the combination of UV-B and WD. From a technological point of view, ABA applications may be an effective vineyard management tool, considering that it elicited a higher content of compounds beneficial for wine aging, as well compounds related to color" |
| Keywords: | Aba Uv-b antioxidant capacity grapevines phenolic compounds water deficit; |
| Notes: | "PubMed-not-MEDLINEAlonso, Rodrigo Berli, Federico J Fontana, Ariel Piccoli, Patricia Bottini, Ruben eng PIP GI 2010-2012/Consejo Nacional de Investigaciones Cientificas y Tecnicas/ PID 2007 0149/Secretaria de Ciencia y Tecnica de la Nacion Argentina/ Switzerland 2021/06/03 Plants (Basel). 2021 May 8; 10(5):938. doi: 10.3390/plants10050938" |
