Fig. 3From: Combining GS-assisted GWAS and transcriptome analysis to mine candidate genes for nitrogen utilization efficiency in Populus cathayanaEnrichment analysis of DEGs at two N levels. a GO enrichment bubble diagram of DEGs. Node color and size indicate the P-value and the number of genes corresponding to the enrichment term, respectively. b Bubble diagram of KEGG enrichment of DEGs. Node color and size indicate the P-value and the number of genes corresponding to the enrichment term, respectivelyBack to article page