Fig. 3From: Genome-wide identification and analysis of high-affinity nitrate transporter 2 (NRT2) family genes in rapeseed (Brassica napus L.) and their responses to various stressesIdentification of putative cis-acting regulatory elements (CREs) in the promoter regions of BnNRT2 family genes. a The abundance of CREs in the promotor regions (2000 bp genomic sequences upstream the start codon) of BnNRT2s were determined in the WordArt program. Font size increases with the abundance of CREs. b Genomic distribution of CREs in promotor regions of BnNRT2s. Boxes filled with different colors represent different CREsBack to article page