Fig. 5.
Phylogenetic trees of 16S rRNA gene sequences retrieved from different external carbon source fed biofilm clone library. a Acetate-fed; b ethanol-fed; c methanol-fed. The phylogenetic tree was constructed using a neighbor-joining algorithm with Jukes–Cantor distance in MEGA. The T-RFs length and abundance of each OTU in the clone library are shown in parentheses