High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity

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 studie...

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Detalles Bibliográficos
Autores principales: Berli, Federico Javier, Alonso, Rodrigo Emanuel, Beltrano, José, Bottini, Ambrosio Rubén
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2015
Materias:
Ciencias Agrarias
Aba
Ethylene
Orac
Phenols
Uv-b
Vitis vinifera l.
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/101630
https://ri.conicet.gov.ar/11336/22960
http://www.ajevonline.org/content/66/1/65
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-101630
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Agrarias
Aba
Ethylene
Orac
Phenols
Uv-b
Vitis vinifera l.
spellingShingle Ciencias Agrarias
Aba
Ethylene
Orac
Phenols
Uv-b
Vitis vinifera l.
Berli, Federico Javier
Alonso, Rodrigo Emanuel
Beltrano, José
Bottini, Ambrosio Rubén
High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity
topic_facet Ciencias Agrarias
Aba
Ethylene
Orac
Phenols
Uv-b
Vitis vinifera l.
description 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.
format Articulo
Preprint
author Berli, Federico Javier
Alonso, Rodrigo Emanuel
Beltrano, José
Bottini, Ambrosio Rubén
author_facet Berli, Federico Javier
Alonso, Rodrigo Emanuel
Beltrano, José
Bottini, Ambrosio Rubén
author_sort Berli, Federico Javier
title High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity
title_short High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity
title_full High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity
title_fullStr High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity
title_full_unstemmed High altitude solar UV-B and abscisic acid application increase grape berry antioxidant capacity
title_sort high altitude solar uv-b and abscisic acid application increase grape berry antioxidant capacity
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/101630
https://ri.conicet.gov.ar/11336/22960
http://www.ajevonline.org/content/66/1/65
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AT beltranojose highaltitudesolaruvbandabscisicacidapplicationincreasegrapeberryantioxidantcapacity
AT bottiniambrosioruben highaltitudesolaruvbandabscisicacidapplicationincreasegrapeberryantioxidantcapacity
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