Figure 3.

Inferred phylogenetic relationships among the five investigated strains of Nitrosococcus oceani based on one of their two identical 16S rRNA gene sequences in the context of Chromatiales bacteria. The phylogenetic tree was constructed based on an alignment of 16S rRNA gene sequences subjected to Bayesian inference employing a Gamma + Invariant sites heterogeneity model with four gamma categories with a strict clock model. Node values are Bayesian posterior probabilities based on 10,000,000 iterations, minus a burn-in of 20% of total. The scale bar represents 0.009 changes per nucleotide position. Colors indicate established taxonomic groups.