Fig. 1 Expressions of GmERD15c in the different tissues of soybean

Fig. 2 Expressions of GmERD15c in the root and leaf of soybean under salt stress

Fig. 3 Metabolite variation in flavonoid synthesis pathway of soybean with transgenic GmERD15c gene A: Main classification of secondary differential metabolites. B: KEGG analysis of transgenic soybean metabolites. C: Quantitative analysis of transgenic soybean flavonoid compounds

Fig. 4 Upset diagram of transcriptome differential genes in soybean Number in each set indicates the number of all differential genes identified in each comparison group. Number of each intersect indicates the number of common differences identified by multiple comparison groups, a point on the abscissa indicates the number of unique differences identified by the comparison group, and a line connecting multiple points on the abscissa indicates the number of common differences identified by multiple comparison groups connected by the line. Blue indicates one group, yellow indicates two groups, red indicates three groups, and green indicates four groups

Fig. 5 Transcriptional metabolism combined with KEGG analysis The base color indicates mRNA and the rectangle indicates metabolites. Blue indicates metabolite downregulation, red indicates metabolite upregulation, green indicates mRNA downregulation, yellow indicates mRNA upregulation, and pink indicates polydifferential mRNA.The numbers in the parentheses indicate the types of enzyme reactions. R07432: Quinate hydroxycinnamoyltransferase.R01945: Quinate ester O-（3,4-dihydroxycinnamoyl）transferase. R01613: 4-coumaroyl-CoA:malate acyltransferase. R07988: Caffeoyl-CoA:malate acyltransferase. R02444: Oxidoreductase