FIG 1.

Neighbor-joining phylogenetic tree of 16S rRNA gene sequences of Mn(II)-oxidizing bacterial isolates and related clone sequences obtained from Mn-rich soil (indicated by boldface type). Isolates are designated by MOB followed by the strain number; clones are designated by Mn_DNA followed by the clone number. Known MOB are designated with an asterisk. Sulfolobus acidocaldarius was used as the outgroup. Branch points supported by bootstrap resampling (1,000 replicates) are indicated by filled circles (bootstrap values of >90%) and open circles (bootstrap values of >50%). Bar, 0.05 change per nucleotide position. Bacteroid., Bacteroidetes; γ-Proteob., Gammaproteobacteria.