Fig. 4

Weighted gene co-expression network analysis of the DEGs identified in the MeJA-treated pear calli. a Dendrogram with co-expressed gene modules. b Module–trait correlations and p-values (in parentheses). The color scale on the right presents the module–trait correlations from − 1 (blue) to 1 (red). The Anthocyanin and Flavonoid panels represent anthocyanin biosynthesis and flavonoid biosynthesis as traits. c Heat map presenting the expression patterns of the DEGs in the ME “green” module. Clustering applied the log₁₀ (FPKM + 1) value. Red and blue denote genes with high and low expression levels, respectively