Phylogenetic tree of rice OsWRKY whole gene family. Phylogenetic tree of rice WRKY proteins. The tree was obtained on the basis of WRKY domain sequences of the 104 rice WRKY protein sequences with the Maximum Likelihood method using PHYML . Both the N and the C WRKY domains were considered for those proteins bearing two domains. Bootstrap values higher than 50 are indicated in the nodes. Letters indicate the nine clusters of co-expressed genes, as presented in Figure 2 and Figure 3. The tree image was produced using iTOL software .
Berri et al. BMC Plant Biology 2009 9:120 doi:10.1186/1471-2229-9-120