A bootstrap consensus maximum parsimony tree of WRKY TFs in canola. The phylogenetic tree was based on the amino acid sequences from WRKY domains only. Only the ~60 amino acid residues in the WRKY domain were aligned using ClustalX (v1.83) and were further examined manually for optimal alignment. The parsimony tree was drawn using MEGA4. The percentage of replicate trees is shown on the branches and it is calculated in the bootstrap test (500 replicates) for the associated taxa being clustered together. The two letters N and C after group I represent the N-terminal and the C-terminal WRKY domains of group I proteins, respectively.