Fig. 3.

Molecular rooted phylogenetic 16S rRNA gene tree analysis by Maximum Likelihood method. The tree was rooted using the 16S rRNA partial gene sequence of Aquifex pyrophilus strain kol5a (NR 029172.1). The evolutionary history was inferred by using the Maximum Likelihood method based on the Kimura 2-parameter model [37]. The percentage of trees in which the associated taxa clustered together in the bootstrap test (10,000 replicates) is shown next to the branches. Evolutionary analyses were conducted in MEGA7 [31].