Effects of UV exclusion on the physiology and phenolic composition of leaves and berries of Vitis vinifera cv. Graciano
| العنوان: | Effects of UV exclusion on the physiology and phenolic composition of leaves and berries of Vitis vinifera cv. Graciano |
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| المؤلفون: | Del-Castillo-Alonso, M.-A., Diago, M.P., Monforte, L., Tardaguila, J., Martínez-Abaigar, J., Núñez-Olivera, E. |
| المساهمون: | European Commission, Ministerio de Economía y Competitividad (España), Gobierno de La Rioja |
| المصدر: | Digital.CSIC. Repositorio Institucional del CSIC instname RIUR. Repositorio Institucional de la Universidad de La Rioja |
| بيانات النشر: | John Wiley & Sons, 2015. |
| سنة النشر: | 2015 |
| مصطلحات موضوعية: | Flavonols, Vacuolar and cell wall-bound fractions, Stilbenes, food and beverages, Hydroxycinnamic acids, Grapevine, Chlorophyll fluorescence, Carotenoids, UV radiation |
| الوصف: | © 2014 Society of Chemical Industry. 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. We are grateful to the Ministerio de Economía y Competitividad of Spain and the Fondo Europeo de Desarrollo Regional (FEDER) for financial support (Project CGL2011-26977). Laura Monforte benefited from a grant of the Gobierno de La Rioja (PRED2010/16). The technical assistance of Ernesto Garrido, Nines Martínez and María Garvía is gratefully acknowledged. The present work is integrated in the COST (European Cooperation in Science and Technology) Action FA0906 of the European Union ‘UV-B radiation: a specific regulator of plant growth and food quality in a changing climate’. |
| وصف الملف: | application/pdf |
| تدمد: | 0022-5142 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::461a56d28f59b33de5ddb566173fa8ed http://hdl.handle.net/10261/144184 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.dedup.wf.001..461a56d28f59b33de5ddb566173fa8ed |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00225142 |
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