Fig. 4.

Phylogenetic relationships among the Sma complex strains. The phylogenetic relationship between the Sma complex strains analysed in this study (n=775) is shown. An ML tree was constructed based on the 182 520 SNP sites identified in 2488 core genes. The root was defined by a similar phylogenetic analysis using the type strain of S. ficalia as an outgroup. Blue diamonds indicate the strains whose complete genome sequences are available. The type strains of Sma and Sne and two Sma strains (Db11 and SM39) are indicated by their names and red dotted lines. For each strain, the isolation region, isolation source, clade, presence/absence of the pig gene cluster, total genome size and GC content are shown. Branches where the deletion of the pig gene cluster occurred are indicated by arrows.