Fig. 2From: Duplication and expression of horizontally transferred polygalacturonase genes is associated with host range expansion of mirid bugsPhylogenetic tree of PGs in mirid bugs. Different species are presented in different colors. Numbers on the node are RAxML bootstrap values (Blue: low support value; Red: high support value). The GenBank accession numbers were shown or the sequences were attached (see electronic Additional file 3)Back to article page