Stilbene Compounds and Stilbene Synthase Expression During Ripening, Wilting, and UV Treatment in Grape Cv. Corvina

J Agric Food Chem. 2001 Nov;49(11):5531-6. doi: 10.1021/jf010672o.

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.

MeSH terms

  • Acyltransferases / genetics
  • Acyltransferases / metabolism*
  • Blotting, Northern
  • RNA, Messenger / genetics
  • Resveratrol
  • Stilbenes / metabolism*
  • Transcription, Genetic
  • Ultraviolet Rays
  • Vitis / physiology
  • Vitis / radiation effects*

Substances

  • RNA, Messenger
  • Stilbenes
  • Acyltransferases
  • stilbene synthase
  • Resveratrol