Fig. 4

Phylogenetic relationships and motif compositions of group III WRKY proteins from ten different plant species. Left panel: an unrooted phylogenetic tree constructed using MEGA 5.0 by the Neighbor-Joining method. The proteins are clustered into seven main clades with several subclades. Subtrees branch lines are colored indicating different clades. The black solid circles indicate group III WRKY proteins from pineapple. Right panel: distribution of conserved motifs in the group III WRKY proteins. The different-colored boxes represent different motifs and their position in each WRKY protein sequence