Fig. 5.

Weighted gene co-expression network analysis (WGCNA). a The significantly differentially expressed genes were assigned to different co-expression modules (CMs). CMs were identified via the Dynamic Tree Cut method; the merged dynamic indicates modules divided according to the similarity of the module (represented by assigned module colors). The subsequent analysis was conducted considering the merged modules. In the tree diagram, the vertical distance indicates the separation between two nodes, corresponding to the genetic distance between the genes. b The correlative relationships of the assigned CMs and root system architecture. *Significant at P < 0.05; **Significant at P < 0.01; ***Significant at P < 0.001