Fig 4. Phylogenetic trees based on the concatenated sequences of the rpoB gene.

Detailed phylogenetic trees of P. melaninogenica strains are shown in Figure (B). The trees were constructed by the neighbour-joining (NJ) method. The numbers at nodes indicate the percentage bootstrap values of 1000 replicates (>70%). Bars indicate the expected nucleotide substitutions per site. * represents reference strains.