Fig. 1.
16S rRNA gene phylogeny of strains wkB301T, wkB309, wkB180 and close relatives. Hosts of origin for bee-derived sequences or strains are highlighted. The tree was built with a maximum-likelihood algorithm using the Generalized Time Reversible substitution model with gamma-distributed rates and invariant sites. Escherichia coli MG1655 is the outgroup. Bootstrap percentages (based on 1000 replicates) are shown at nodes. Bar, 0.2 substitutions per site.