Figure 1

Schematic representation of flavonoid biosynthetic pathway.
Dashed arrows represent multiple enzymatic steps. ANS, anthocyanidin synthase; ANR, anthocyanidin reductase; CHS, chalcone synthase; CHI, chalcone isomerase; DFR, dihydro flavanol 4-reductase; F3H, flavanone 3-hydroxylase; F3′H, flavonoid 3′-hydroxylase; F3′5′H, flavonoid 3′5′ hydroxylase; FLS, flavonol synthase; LAR, leucoanthocyanidin reductase.