Figure 9.

Rice flavonoid biosynthesis pathways and expression of genes encoding key enzymes. (A) Rice flavonoid biosynthesis pathway. (B) The relative expression level of genes encoding key enzymes in PA2364S. CHS, chalcone synthase; CHI, chalcone isomerase; F₃H, flavanone 3-hydroxylase; FLS, flavonol synthase; FNSII, flavone synthase II; A3′H/C5′H, apigenin 3′-hydroxylase/chrysoeriol 5′-hydroxylase; FOMT, flavonoid O-methyltransferase. Sterisks indicate significant differences revealed by Student’s t-test at p < 0.05 (*).