FIG 3 .

Distribution of cts haplotypes of P. syringae into four genetic clusters inferred with the Bayesian clustering algorithm of the STRUCTURE software. The frequency of haplotypes assigned to each of the clusters is indicated for haplotypes of strains from crops (hatched bars) and of strains from water (solid black bars). Of the 88 haplotypes analyzed, 78 were assigned to clusters with probabilities of inferred ancestry between 0.70 and 0.99. Three haplotypes were assigned at equal probabilities (ca. 0.50) to clusters 1 and 2, and seven haplotypes were assigned at equal probabilities to clusters 3 and 4.