FIG 1.
Phylogenetic relationship of the Y. pseudotuberculosis isolates. The phylogenetic relationship was calculated with CSI Phylogeny v1.4 using the following parameters: minimum depth at SNP positions = 10×; min. relative depth at SNP positions = 10×; minimum distance between SNPs (prune) = 10 bp; minimum SNP quality = 30; minimum read mapping quality = 25; and a minimal Z-score of 1.96. Heterozygous SNPs were ignored. The presence of virulence-associated DNA regions is indicated by black boxes.