The potential relationship of stilbene (resveratrol) synthesis to anthocyanin content in grape berry skins

Authors

  • P. Jeandet
  • M. Sbaghi
  • R. Bessis
  • P. Meunier

DOI:

https://doi.org/10.5073/vitis.1995.34.91-94

Keywords:

resveratrol, anthocyanins, grapevine, chalcone synthase, stilbene, synthase

Abstract

The relationship between the production of resveratrol, a phytoalexin related to grape disease resistance, and the anthocyanin content of grape berries in diverse Vitis species has been investigated. Previous studies have reported that the phytoalexin production potential of grapes suddenly declines at veraison. The results obtained here from assaying resveratrol and anthocyanins from grape berries in different developmental stages suggest that chalcone synthase (EC 2.3.1.74), the key enzyme involved in anthocyanin biosynthesis, may compete with stilbene (resveratrol) synthase (EC 2.3.1.-), such that the decrease of the ability of grapes to synthesize resveratrol in response to UV-irradiation observed after the onset of fruit ripening may be a consequence of the concomitant rise of anthocyanin accumulation in fruits.

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Published

2015-08-14

Issue

Vol. 34 No. 2 (1995): Vitis

Section

Article

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