This is a probable explanation for its predominance
in the current study, which included highly variable conditions.
The results from mcrA clone and DGGE band sequencing
showed that Methanosarcina was very abundant in all samples.
Notably, of the two commonly known acetotrophic methanogen
genera Methanosaeta and Methanosarcina (alternatively called
‘acetoclastic’, or ‘acetate-utilizing’ methanogens),