SOM9 GCNs from C. campestris tissue type RNA-seq data. A, GCN of genes that are classified in SOM9, which includes genes that are highly expressed in both prehaustoria and haustoria. This SOM9 GCN is composed of three major modules. Magenta indicates genes in Module 1, which has enriched biological process GO term “plant-type cell wall loosening.” Cyan indicates genes in Module 2. Blue indicates genes in Module 3, which has enriched biological process GO terms “transport, response to hormones, secondary metabolite biosynthetic process, and regulation of lignin biosynthetic process.” The only three TFs in Module 1 are enlarged and labeled in yellow. The genes involved in auxin transport are labeled in diamonds. The genes involved in brassinosteroid signaling are labeled in squares. B, GCN of genes that are classified in SOM9 Module 1. Dark red lines indicate the connection between CcLBD25 (yellow) and its first layer neighbors. The genes that are first layer neighbors of CcLBD25 are labeled in pink. The genes that are second layer neighbors of CcLBD25 are labeled in orange with medium size dots. The genes that are outside the second layer neighbors of CcLBD25 are labeled in red with small size dots. The only three TFs as well as cell wall loosening related genes are enlarged, highlighted and labeled in the network. A and B, PL. A, auxin efflux carrier-like protein. BR, brassinosteroid insensitive 1-associated receptor kinase 1-like.