dc.creator | Berli, Federico Javier | |
dc.creator | Alonso, Rodrigo Emanuel | |
dc.creator | Beltrano, Jose | |
dc.creator | Bottini, Ambrosio Rubén | |
dc.date.accessioned | 2017-08-24T19:52:06Z | |
dc.date.accessioned | 2018-11-06T14:30:33Z | |
dc.date.available | 2017-08-24T19:52:06Z | |
dc.date.available | 2018-11-06T14:30:33Z | |
dc.date.created | 2017-08-24T19:52:06Z | |
dc.date.issued | 2015-02 | |
dc.identifier | Berli, Federico Javier; Alonso, Rodrigo Emanuel; Beltrano, Jose; Bottini, Ambrosio Rubén; High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity; Amer Soc Enology Viticulture; American Society For Enology And Viticulture; 66; 1; 2-2015; 65-72 | |
dc.identifier | 0002-9254 | |
dc.identifier | http://hdl.handle.net/11336/22960 | |
dc.identifier | CONICET Digital | |
dc.identifier | CONICET | |
dc.identifier.uri | http://repositorioslatinoamericanos.uchile.cl/handle/2250/1887169 | |
dc.description.abstract | It has been proposed that ultraviolet-B (UV-B) radiation activates grapevines antioxidant defense system and abscisic acid (ABA) acts downstream in the signaling pathway. Effects of solar UV-B perceived by high altitude vineyards and ABA sprays on berry quality indicators and fruit yield were studied on Vitis vinifera L. cv. Malbec at 5 developmental stages during three consecutive growing seasons. Grapevines were exposed to ambient solar UV-B (+UV-B) or to UV-B filtered sunlight (?UV-B) from 15 days before flowering, combined with weekly sprays of 1 mM ABA (+ABA) or H2O (?ABA) from 27 days before veraison. Berry skin phenols (anthocyanins and total polyphenols) were increased by +UV-B and +ABA, markedly in concentration (UV-B x ABA significant interaction). The increases in antioxidant capacity, measured as oxygen antioxidant capacity (ORAC) and phenols in the berries exposed to +UV-B/+ABA combined treatment were higher compared with ?UV-B/?ABA, for the same increase in sugar. Also, +UV-B and +ABA interact to reduce number of berries and bunches weight (fruit yield), without affecting sugar concentration (smaller berries) at harvest. Antioxidant compounds (protective for plants), are triggered in +UV-B/+ABA at the expenses of sugar accumulation, berry retention and growth (fruit yield). UV-B perceived by high altitude vineyards and ABA applications interact to increase red grape berry quality indicators, markedly in concentration (important from a winemaking standpoint). Also, UV-B and ABA effects on berry sugar accumulation and growth depend on the stage of development. | |
dc.language | eng | |
dc.publisher | Amer Soc Enology Viticulture | |
dc.relation | info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.5344/ajev.2014.14067 | |
dc.relation | info:eu-repo/semantics/altIdentifier/url/http://www.ajevonline.org/content/66/1/65 | |
dc.rights | https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ | |
dc.rights | info:eu-repo/semantics/restrictedAccess | |
dc.subject | ABA | |
dc.subject | ethylene | |
dc.subject | ORAC | |
dc.subject | phenols | |
dc.subject | UV-B | |
dc.subject | Vitis vinifera L. | |
dc.title | High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |
dc.type | Artículos de revistas | |