Figure 2

Phylogenetic tree of XA21 homologs. The represented tree is the bootstrap consensus tree inferred from 1000 replicates generated using the Neighbor-Joining method [53]. The percentage of replicate trees in which the associated sequences clustered together in the bootstrap test (1000 replicates) are shown next to the branches. The analysis involved 25 amino acid sequences and 242 amino acid positions. All positions containing gaps and missing data were eliminated. Evolutionary analyses were conducted in MEGA5 [47]. The XA21 clade was divided into 4 subclades as reported in [54].