Fig. 1

Phylogeny of isolated cellulose-degrading thermophilic anaerobic bacteria based on 16S rRNA gene sequence analysis. The percentage of replicate trees in which the associated taxa clustered together in the bootstrap test (1000 replicates) is shown next to the branches [86]. The evolutionary distances were computed using the Maximum Composite Likelihood method [87] and are in the units of the number of base substitutions per site. 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 MEGA7 [85]. Gene bank accession numbers of the isolated strains are shown in parentheses