Fig. 12

Transcript profiling of genes in the phenylpropanoid and flavonoid biosynthetic pathways. a Flavonoid biosynthetic pathway. The pathways were constructed based on the KEGG pathway database and the literature [40]. Each box represents the difference in the expression of related genes under different salt treatments. Red represents a high level of expression, and blue represents a low level. Red and blue indicate upregulated and downregulated metabolites, respectively. PAL, phenylalanine ammonia-lyase; 4CL, 4-coumarate-CoA ligase; C3’H, 5-O-(4-coumaroyl)-D-quinate 3’-monooxygenase; HCT, shikimate O-hydroxycinnamoyltransferase; CCR, cinnamoyl-CoA reductase; CHS, chalcone synthase; FLS, flavonol synthase; DFR, bifunctional dihydroflavonol 4-reductase/flavanone 4-reductase; ANR, anthocyanidin reductase; LAR, leucoanthocyanidin reductase. b Heatmap representation of flavonoid-related gene expression patterns. The gene expression data are shown as a heatmap depicting log2 (FPKM) values