Fig. 8From: Combining GS-assisted GWAS and transcriptome analysis to mine candidate genes for nitrogen utilization efficiency in Populus cathayanaExpression changes in various enzyme-related genes during N metabolism at two N levels. NRT: nitrate transporter; NR: nitrate reductase; NiR: nitrite reductase; GS: glutamine synthetase; GOGAT: glutamate synthase; effectively expressed genes (FPKM value > 1) associated with enzymes in N utilization were screened based on gene annotation information, and heatmaps were drawn based on the difference multiplicity Log2FCBack to article page