Figure 3
From: Reductive evolution in Streptococcus agalactiaeand the emergence of a host adapted lineage
Phylogenetic relationships between S. agalactiae strains isolated from fish/frog, bovine and human. A maximum likelihood phylogenetic tree was constructed using the MEGA 5.04 software [41] based on 25,597 concatenated SNPs from the core genome of GBS strains (1.34 Mb) of which regions recombined between ST6 and ST7 strains have been removed. The bootstrap values resulting from 1000 replicates are indicated. Strains sequenced in this work are underlined. The tree branches that are further analyzed in Figure 4 are colored (red: Nfbh-A260+261 branch; green: A260+261-A261 branch; blue: A260+261-A260 branch). A phylogenetic analysis using the Neighbor-Joining method gave the same topology for the tree (not shown).