Leucoanthocyanidin reductase and anthocyanidin reductase gene expression and activity in flowers, young berries and skins of Vitis vinifera L. cv. Cabernet-Sauvignon during development.

@article{Gagn2009LeucoanthocyanidinRA,
  title={Leucoanthocyanidin reductase and anthocyanidin reductase gene expression and activity in flowers, young berries and skins of Vitis vinifera L. cv. Cabernet-Sauvignon during development.},
  author={S{\'e}verine Gagn{\'e} and Soizic Lacampagne and Olivier Claisse and Laurence G{\'e}ny},
  journal={Plant physiology and biochemistry : PPB},
  year={2009},
  volume={47 4},
  pages={282-90}
}
Proanthocyanidins, or condensed tannins, are crucial polyphenolic compounds for grape and wine quality. Recently, significant advances were achieved in understanding the biosynthesis of their main subunits: (+)-catechin and (-)-epicatechin, produced by catalysis of leucoanthocyanidin reductase (LAR) and anthocyanidin reductase (ANR), respectively. Expression studies had been published but no data were available on enzyme activity. In our work, we devised assays to measure LAR and ANR activity… CONTINUE READING

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