FIG. 4.

Phylogenetic relationships among 27 S. salivarius strains and 9 S. vestibularis strains. Trees are shown for glcK, ilvC, and pepO loci. Ssal, S. salivarius; Sves, S. vestibularis; p, pathogen; c, commensal; Spneumo, S. pneumoniae; Spsang, S. parasanguinis. The strain numbers correspond to ST numbers shown in Table 1. The trees were constructed by using the neighbor-joining method. Clusters and bootstrap values that are ≥80% are indicated. The scale bars indicate the number of nucleotide substitutions per site.