Fig. 6

Flavonoid pathways, with enzymes encoded by genes involved in SC formation. Gene expression values in the heatmap were normalized by log₂(FPKM + 1). All of these genes are listed in Additional file 1: Table S9. Asterisks (*) above the heatmap images indicate that a given gene is significantly more highly expressed in the B. rapa accession marked with an asterisk. Protein abbreviations: PAL phenylalanine ammonia lyase; C4H cinnamate 4-hydroxylase, 4CL 4-coumarate coenzyme A ligase; CHS; chalcone synthase, CHI chalcone isomerase, F3H flavonol 3-hydroxylase, F3′H flavonol 3′-hydroxylase, FLS flavonol synthase, DFR dihydroflavonol-4-reductase, LDOX leucoanthocyanidin dioxygenase; BAN BANYULS, TTG1 TRANSPARENT TESTA GLABRA1