Fig. 6

Integrated analysis of flavonoid biosynthesis [26] based on metabolite and transcript analyses. The heatmap of the genes refers to the Z-score normalization of FPKM value of the samples, and the color scale from minimum (green) to maximum (red) corresponds with low to high gene expression, respectively. The three samples refers to the average value of the three groups (n = 3 each) for green bark (G), purple bark (P), and red bark (R); each sample was analyzed in biological triplicates. CHS, chalcone synthase; ANR, anthocyanidin reductase; ANS, anthocyanidin synthase; DFR, dihydroflavonol 4-reductase; CHI, chalcone flavanone isomerase; BZ1, bronze-1; LAR, leucoanthocyanidin reductase; FLS, flavonol synthase; CYP75A, flavonoid 3', 5'-hydroxylase; CYP75B1, flavonoid 3'-monooxygenase; CYP93B2, cytochrome P450 93B2; CYP73A, trans-cinnamate 4-monooxygenase; and F3H, flavanone 3-hydroxylase