FIG 3.

Maximum-likelihood trees based on 16S rRNA gene sequences, showing the phylogenetic positions of Streptomyces isolates representing putative novel phylotypes (in boldface font). DDBJ/EMBL/GenBank accession numbers are shown in parentheses. Bootstrap values of the NJ and ML analyses are shown above the internodes before and after the backslash, respectively, and posterior probabilities of the Bayesian analyses (≥0.95) are shown below the internodes; only values above 50% are given. Bar, 0.01 substitutions per site. *, strain is moderately acidophilic; **, strain is obligately acidophilic.