FIG. 1.

A dendrogram constructed by using the neighbor-joining method shows the phylogenetic relationships of AFLP fingerprints of X. fuscans subsp. fuscans and X. axonopodis pv. phaseoli strains and related xanthomonads. The representative strains of the four genetic lineages of these bean pathogens (black circles), selected as testers for our four SSHs, are underlined. The three closely related xanthomonad (X. axonopodis pv. allii [44], X. fuscans subsp. aurantifolii [40], and Xanthomonas citri subsp. citri [40]) strains, selected as the drivers for our four SSHs, are indicated by dotted boxes. Numbers at the branch points represent the bootstrap values (1,000 replicates). Only high bootstrap values (>60) are displayed. Strain CFBP4924 is the type strain of the X. axonopodis species (44).