Fig. 7

WGCNA analysis to predict that the key genes involved in the biosynthesis of PMGs. A: Clustering dendrograms of 6,560 transcripts (after filtering the low fluctuation expression (standard deviation < 1) transcripts). Each clade corresponding to a module was represented by different color. Modules with certain correlations were merged into the same module. B: Module-PMGs relationships. Each row represents a module of characteristic genes, numbers in bracket are the amount of genes in each module. Each column represents a metabolite. Each cell represents the correlation and the significance (*, **, and *** significant at 10%, 5%, and 1% level, respectively). The list of transcripts in each modules and the expression levels of transcripts in each tissues were provided in the additional file 7 and 8