Phylogenetic Analysis of Stenotrophomonas spp. Isolates Contributes to the Identification of Nosocomial and Community-Acquired Infections

Figure 2

Neighbor-joining phylogram of 47 Stenotrophomonas spp. clinical strains based on ppsA gene fragment. Neighbor-joining phylogram (1000 bootstrap replications, p-distance model) for the gene ppsA. Phylogenetic groups and subgroups are indicated by A, B, B.I, B.II, B.III, B.III.1, B.III.2, and B.III.3 similarly to the concatenated tree depicted in Figure 1. The numbers at branch nodes represent the bootstrap values.