Effects of UV exclusion on the physiology and phenolic composition of leaves and berries of Vitis vinifera cv. Graciano

  1. Del-Castillo-Alonso, M.-A. 2
  2. Diago, M.P. 1
  3. Monforte, L. 2
  4. Tardaguila, J. 1
  5. Martínez-Abaigar, J. 2
  6. Núñez-Olivera, E. 2
  1. 1 Instituto de Ciencias de la Vid y del Vino
    info

    Instituto de Ciencias de la Vid y del Vino

    Logroño, España

    ROR https://ror.org/01rm2sw78

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Revista:
Journal of the Science of Food and Agriculture

ISSN: 0022-5142

Año de publicación: 2015

Volumen: 95

Número: 2

Páginas: 409-416

Tipo: Artículo

DOI: 10.1002/JSFA.6738 SCOPUS: 2-s2.0-84918812442 WoS: WOS:000345842900023 GOOGLE SCHOLAR

Otras publicaciones en: Journal of the Science of Food and Agriculture

Repositorio institucional: lockAcceso abierto Editor

Proyectos relacionados

Generalización del uso de ácidos hidroxicinámicos como bioindicadores de radiación ultravioleta en briófitos

2012/00005/001

Resumen

Background: Ultraviolet (UV) radiation induces adaptive responses that can be used for plant production improvement. The aim of this study was to assess the effect of solar UV exclusion on the physiology and phenolic compounds of leaves and berry skins of Vitis vinifera L. cv. Graciano under field conditions. Phenolic compounds were analyzed globally and individually in both the vacuolar fraction and, for the first time in grapevine, the cell wall-bound fraction. These different locations may represent diverse modalities of phenolic response to and protection against UV. Results: UV exclusion led to a decrease in Fv/Fm in leaves, revealing that solar UV is needed for adequate photoprotection. Only p-caffeoyl-tartaric acid from the soluble fraction of leaves and myricetin-3-O-glucoside from the soluble fraction of berry skins were significantly higher in the presence of UV radiation, and thus they could play a role in UV protection. Other hydroxycinnamic acids, flavonols, flavanols and stilbenes did not respond to UV exclusion. Conclusion: UV exclusion led to subtle changes in leaves and berry skins of Graciano cultivar, which would be well adapted to current UV levels. This may help support decision-making on viticultural practices modifying UV exposure of leaves and berries, which could improve grape and wine quality.