Fig. 1From: Genome-wide identification and expression analysis of the polygalacturonase gene family in sweetpotatoPhylogenetic analysis of I. batatas and A. thaliana constructed by MEGA6.06 software with default parameter settings. The different color blocks indicated different subclasses (Clade A-G) of the PG gene family. IbPG gene family was clustered into 6 clades, and each clade contained 9, 8, 23, 39, 16 and 8 IbPGs, respectively. The bootstrap values lower than 50 were not shown. The distance scale denoted the number of amino acid substitutions per site. The name of each branch was indicated next to the corresponding branch, the circles and triangles represented the PG proteins from I. batatas and A. thaliana, respectivelyBack to article page