The detailed version of metabolic pathway for flavonoids in C. acuminate. New flavonoids are depicted in blue. PAL: phenylalanine ammonia-lyase, C4H: cinnamate 4-hydroxylase, 4CL: 4-Coumarate coenzyme A ligase, CHS: chalcone synthase, CHI: chalcone isomerase, BPS: benzophenone synthase, XS: xanthone synthase, CYP450: cytochrome P450, OMT: O-methyltransferase, UGT: UDP-glucosyltransferase, PT: prenyltransferase, RD: reductase, DH: dehydrase