Abstract:The family Methanoperedenaceae archaea mediate anaerobic oxidation of methane (AOM) in various terrestrial environments. In this study, we newly developed a high-pressure laboratory incubation system by controlling hydraulic pressure ranging from ambient to 5 MPa. Using the system, we investigated groundwater from 214- and 249-m deep boreholes at Horonobe Underground Research Laboratory, Japan, where the high and low abundances of Methanoperedenaceae archaea have been revealed by genome-resolved metagenomics, … Show more
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