Fig. 3

An unrooted phylogenetic tree of ST633 strains based on the SNPs identified in entire chromosomes. Hokkaido (n = 9), Russian (n = 12), and Mongolian isolates (n = 3) are indicated in blue, green, and red, respectively. The sequences of Russian isolates were obtained from the GenBank database. The scale bar indicates 5% divergence. The ML tree was constructed based on 207 SNPs identified in whole chromosomes using MEGA7