Additional file 2.

Arabidopsis - rice WRKY phylogenetic tree. Phylogenetic tree of rice and Arabidopsis WRKY domains obtained with the Maximum Likelihood method using PHYML [68]. Both the N and the C WRKY domains were considered for those proteins bearing two domains. Bootstrap values higher than 50 are indicated on the nodes. The sequences of Giardia lamblia, Dictyostelium discoideum and Chlamydomonas reinhadrtii were included. The tree image was produced using iTOL software [69]. The three distinct sub-groups of group 3 identified in this study are indicated as 3A, 3B and 3C.

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Berri et al. BMC Plant Biology 2009 9:120   doi:10.1186/1471-2229-9-120