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Genetical and biochemical evidence that the hydroxylation pattern of the anthocyanin B-ring in Silene dioica is determined at the p-coumaroyl-coenzyme a stage

By J. Kamsteeg, J. van Brederode and G. van Nigtevecht


In petals of Silene dioica, gene P controls the 3′-hydroxylation of the anthocyanin B-ring and the hydroxylation pattern of the hydroxycinnamoyl acyl group bound to the 4″'-hydroxyl group of rhamnose of anthocyanidin 3-rhamnosyl(1→6)glucoside-5-glucoside. In this paper, experiments are presented which show that gene P is involved in the hydroxylation of p-coumaroyl-CoA to caffeoyl-CoA, which is then used both as a precursor in anthocyanin biosynthesis and as a substrate for the final acylation

Topics: Biologie, Silene dioica, caryophyllaceae, red campion, anthocyanin biosynthesis, pelargonidin and cyanidin glycosides, p-coumaroyl-CoA, caffeoyl-CoA, hydroxylation, genetic control
Year: 1980
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