Fig. 5
Putative flavonoid biosynthesis pathway in A. oxyphylla. (a) Expression level of candidate A. oxyphylla unigenes coding for key enzymes involved in flavonoid biosynthesis pathways. Green and red colors are used to represent low-to-high expression levels (mean centered log2-transformed FPKM values). (b) Pathway for flavonoid biosynthesis. The numbers in brackets following each gene name indicate the number of A. oxyphylla unigenes corresponding to that gene. Enzyme abbreviations are as follows: PAL, phenylalanine ammonia-lyase; C4H, cinnamate 4-hydroxylase; CHS, chalcone synthase; CCoAMT, Caffeoyl Co-A transferase; 4CL, 4-coumarate-CoA ligase; CHI, chalcone isomerase; F3H, flavanone 3-hydroxylase; F3’5’H, flavonoid-3′, 5′-hydroxylase; DFR, dihydroflavonol-4-reductase; ANR, anthocyanidin reductase; ANS, anthocyanidin synthase