Fig. 1From: Genome-wide identification and analysis of high-affinity nitrate transporter 2 (NRT2) family genes in rapeseed (Brassica napus L.) and their responses to various stressesPhylogenetic relationships of NRT2 family proteins in diverse species. A total of 114 protein sequences were subjected to multiple sequence alignment in ClustalW prior to constructing a phylogenetic tree using the Neighbor-Joining method in MEGA 6.06. Different groups are labeled by different colors. The aligned NRT2 proteins originating from A.thaliana, B.napus and O.sativa are marked by triangles, circles and squares, respectivelyBack to article page