1. Stilbene compounds and stilbene synthase expression during ripening, wilting, and UV treatment in grape cv. Corvina.
- Author
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Versari A, Parpinello GP, Tornielli GB, Ferrarini R, and Giulivo C
- Subjects
- Acyltransferases genetics, Blotting, Northern, RNA, Messenger genetics, Resveratrol, Transcription, Genetic, Ultraviolet Rays, Vitis physiology, Acyltransferases metabolism, Stilbenes metabolism, Vitis radiation effects
- Abstract
The content of selected phenolic compounds including resveratrol (trans-3,5,4'-trihydroxystilbene) and its cis-isomer and glucosides (piceides) were monitored in grape (Vitis vinifera L. cv. Corvina) berry skin during ripening in the vineyard and in response to the post-harvest drying process (wilting). Four wilting conditions were compared (traditional, mixed, low-temperature, and high-temperature) to verify the eliciting effect of drying on resveratrol production. During fruit ripening the cis-piceid was the major stilbene found in berry skins, and a weak accumulation of stilbene synthase (STS) mRNA was observed, whereas UV-light irradiation greatly stimulated STS transcript of unripe berries. A time-course experiment showed the highest STS mRNA accumulation and resveratrol content (34 microg/g fresh weight at 58 days) occurring in berry skins in a mixed wilting process.
- Published
- 2001
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