Phylogram of Group 3 WRKY domains from Arabidopsis (AtWRKY) and rice (OsWRKY). The amino acid sequences were analysed with the neighbor-joining and parsimony algorithms implemented in PHYLIP 3.57. Bootstrap values ≥ 50% are indicated above the nodes for distance analysis. The C-terminal domains, AtWRKY1C, was used as the outgroup. OsWRKY proteins with the variant WRKYGEK are marked by *.