Fig. 3

Phylogenetic relationships among the identified bZIP proteins in Arabidopsis thaliana, Solanum lycopersicum and Ipomoea trifida. The 75 Arabidopsis thaliana, 69 Solanum lycopersicum and 66 Ipomoea trifida bZIP domain protein sequences were aligned by ClustalX, and the phylogenetic tree was constructed using MEGA7 by the Maximum Likelihood method analysis (1000 replicates). Arabidopsis thaliana, Solanum lycopersicum and Ipomoea trifida genes are indicated at the end of the branches. Subgroups A–I and S were named according to Arabidopsis thaliana [6]. The colored regions indicate different subfamilies, the red solid circles indicate the ItfbZIP proteins, the green solid circles represent the SlbZIP proteins, and the blue solid circles represent the AtbZIP proteins