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dc.contributor.authorSu, Guangyi
dc.contributor.authorZopfi, Jakob
dc.contributor.authorYao, Haoyi
dc.contributor.authorSteinle, Lea
dc.contributor.authorNiemann, Helge
dc.contributor.authorLehmann, Moritz F
dc.date.accessioned2020-04-29T09:09:17Z
dc.date.available2020-04-29T09:09:17Z
dc.date.issued2019-11-04
dc.description.abstractAnaerobic oxidation of methane (AOM) by methanotrophic archaea is an important sink of this greenhouse gas in marine sediments. However, evidence for AOM in freshwater habitats is rare, and little is known about the pathways, electron acceptors, and microbes involved. Here, we show that AOM occurs in anoxic sediments of a sulfate‐rich lake in southern Switzerland (Lake Cadagno). Combined AOM‐rate and 16S rRNA gene‐sequencing data suggest that <i>Candidatus</i> Methanoperedens archaea are responsible for the observed methane oxidation. Members of the <i>Methanoperedenaceae</i> family were previously reported to conduct nitrate‐ or iron/manganese‐dependent AOM. However, we demonstrate for the first time that the methanotrophic archaea do not necessarily rely upon these oxidants as terminal electron acceptors directly, but mainly perform canonical sulfate‐dependent AOM, which under sulfate‐starved conditions can be supported by metal (Mn, Fe) oxides through oxidation of reduced sulfur species to sulfate. The correspondence of high abundances of <i>Desulfobulbaceae</i> and <i>Candidatus</i> Methanoperedens at the same sediment depth confirms the interdependence of anaerobic methane‐oxidizing archaea and sulfate‐reducing bacteria. The relatively high abundance and widespread distribution of <i>Candidatus</i> Methanoperedens in lake sediments highlight their potentially important role in mitigating methane emissions from terrestrial freshwater environments to the atmosphere, analogous to ANME‐1, ‐2, and ‐3 in marine settings.en_US
dc.identifier.citationSu, Zopfi J, Yao H, Steinle L, Niemann H, Lehmann MF. Manganese/iron‐supported sulfate‐dependent anaerobic oxidation of methane by archaea in lake sediments. Limnology and Oceanography. 2019en_US
dc.identifier.cristinIDFRIDAID 1744015
dc.identifier.doi10.1002/lno.11354
dc.identifier.issn0024-3590
dc.identifier.issn1939-5590
dc.identifier.urihttps://hdl.handle.net/10037/18157
dc.language.isoengen_US
dc.publisherWileyen_US
dc.relation.journalLimnology and Oceanography
dc.relation.projectIDNorges forskningsråd: 223259en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/SFF/223259/Norway/Centre for Arctic Gas Hydrate, Environment and Climate/CAGE/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2019 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.titleManganese/iron‐supported sulfate‐dependent anaerobic oxidation of methane by archaea in lake sedimentsen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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