Fig. 6

Metabolites and genes associated with the flavonoid and anthocyanin biosynthesis pathways were analyzed using metabolomic and transcriptomic approaches. Heat maps of differentially expressed genes (DEGs) in transcripts in flavonoid and anthocyanin biosynthesis. CHS, chalcone synthase; CHI, chalcone isomerase; F3H, naringenin 3-dioxygenase; FLS, flavonoid 3’-monooxygenase; DFR, dihydroflavonol 4-reductase; ANS, anthocyanidin synthase; UFGT, UDP glucose-flavonoid 3–0-glucosyltransferase. Differential metabolites associated with anthocyanin synthesis are represented in the red box under the dark (CK), visible light and UV-B radiation treatments