Fig.1

Enrichment and expression level of unigenes（FPKM>1） from C.gracile in total metabolism

Fig.2

Enrichment and expression level of unigenes（FPKM>1） from C.gracilein secondary metabolism

Table 1

Number of unigenes involved in secondary metabolism pathways in C.gracile

Figure 3

Pathway classifications for biosynthesis metabolism in C.gracile

Table 2

Key enzymes for the anthocyanin

Fig.4

Anthocyanin biosynthesis pathway and Cluster heat map of the expression of key enzymes in tissuesF,L,R and S represent flower,leaf,root,and stem samples,respectively.Red and green represent high and low expression levels,respectively

Fig.5

Differential gene expression of anthocyanin in four tissuesA.Heatmap of unigenes of C.gracile involved in anthocyanin biosynthesis； B.The number of unigenes up-regulated or down-regulated in the specified samples are shown

Fig.6

GO enrichment of unigenes involved in anthocyanin biosynthesis in C.gracile

Fig.7

The secondary structure and tertiary structure of DFR in C.gracileA.The tertiary structure of DFR in C.gracile with helices colored in red,strands colored in yellow; B.The purple region shows the binding site for NAD+;C.The secondary structure of DFR in C.gracile（The black underline shows the NAD+ binding site）

Table 3

Homologous alignment of DFR protein

Fig.8

Phylogenetic analysis of DFR in C.gracile0.05 shows genetic distance;The black triangle highlights the C.gracile