Abstract
The oxidation of acetate to hydrogen, and the subsequent conversion of hydrogen and carbon dioxide to methane, has been regarded largely as a niche mechanism occurring at high temperatures or under inhibitory conditions. In this study, 13 anaerobic reactors and sediment from a temperate anaerobic lake were surveyed for their dominant methanogenic population by using fluorescent in situ hybridization and for the degree of acetate oxidation relative to aceticlastic conversion by using radiolabeled [2-C-14]acetate in batch incubations. When Methanosaetaceae were not present, acetate oxidation was the dominant methanogenic pathway. Acetielastic conversion was observed only in the presence of Methanosaetaceae.
Original language | English |
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Journal | Applied and Environmental Microbiology |
Volume | 72 |
Issue number | 7 |
Pages (from-to) | 5138-5141 |
ISSN | 0099-2240 |
DOIs | |
Publication status | Published - 2006 |