Figure 3. The phylogenetic relationship of XTHs derived from peanut, Arabidopsis, and soybean.

The unrooted phylogenetic tree was constructed using MEGA-X by neighbor-joining method with 1,000 bootstrap replicates. The XTHs of peanuts, Arabidopsis and soybeans were respectively shown in red square, yellow triangle, and blue circle. Total of 152 XTH members were classified into three subfamilies: I/II, IIIA and IIIB, and were differentiated by the folding lines with black, red and blue color.