Anthocyanin synthesis in a white flowering mutant ofPetunia hybridaby a complementation technique

摘要

In vitrocultured corollas of the white flowering mutant W18 ofPetunia hybridasynthesize anthocyanins after administration of a bud extract of the white flowering mutant W19. Dihydroquercetin-7-glucoside was identified as the major metabolite from W19, which is converted into anthocyanins in W18. This result supports the genetic evidences with regards to the biosynthetic pathway leading to anthocyanins in this plant. W18 was not able to convert flavanones or flavonols into anthocyanins. This type of experiments may be of value for elucidation of certain aspects of flavonoid biosynthesis.