Resistance to and Accumulation of Heavy Metals by Actinobacteria Isolated from Abandoned Mining Areas

Figure 5

Evolutionary relationships of taxa: the evolutionary history was inferred using the neighbor-joining method [71]. The optimal tree with the sum of branch length = 0.21501137 is shown. The tree is drawn to scale, with branch lengths in the same units as those of the evolutionary distances used to infer the phylogenetic tree. The evolutionary distances were computed using the maximum composite likelihood method [72] and are in the units of the number of base substitutions per site. The analysis involved 55 nucleotide sequences. Codon positions included were 1st + 2nd + 3rd + noncoding. All positions containing gaps and missing data were eliminated. There were a total of 1392 positions in the final dataset. Evolutionary analyses were conducted in MEGA5 [32]. The scale bar represents 0.01 substitutions per nucleotide position.