Fig. 1.

Phylogenetic tree of AAP proteins. The unroot tree contains 154 protiens from Chlorophyta to Angiosperms and 7 different colors indicate AAPs from different stages. The protein distribution can easily divide into 2 main parts which were showed by greenyellow and violet colors’ dash lines and the group II might be divided into 2 subgroups indicated by gray and lightgray lines, respectively