Fig. 5From: Combining GS-assisted GWAS and transcriptome analysis to mine candidate genes for nitrogen utilization efficiency in Populus cathayanaPink module genes interactions network and hub genes analysis. a Visualization of the Pink module gene network, the circled parts were hub genes; the Potri.015G034700 gene regulates all genes except the gray circular parts. b Functional annotation of hub genes and heatmap of gene expression. Heatmap data were derived from normalized of gene expression in each region population in RNA-seqBack to article page