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dc.contributor.authorWolfe, Joanna Michelle
dc.contributor.authorFournier, Gregory P.
dc.date.accessioned2018-10-01T20:12:47Z
dc.date.available2018-10-01T20:12:47Z
dc.date.issued2017-04
dc.date.submitted2017-08
dc.identifier.issn2397-334X
dc.identifier.urihttp://hdl.handle.net/1721.1/118329
dc.description.abstractMicrobial methanogenesis may have been a major component of Earth's carbon cycle during the Archaean eon, generating a methane greenhouse that increased global temperatures enough for a liquid hydrosphere, despite the Sun's lower luminosity at the time. Evaluation of potential solutions to the 'faint young Sun' hypothesis by determining the age of microbial methanogenesis has been limited by ambiguous geochemical evidence and the absence of a diagnostic fossil record. To overcome these challenges, we use a temporal constraint: A horizontal gene transfer event from within archaeal methanogens to the ancestor of Cyanobacteria, one of the few microbial clades with recognized crown-group fossils. Results of molecular clock analyses calibrated by this horizontal-gene-Transfer-propagated constraint show methanogens diverging within Euryarchaeota no later than 3.51 billion years ago, with methanogenesis itself probably evolving earlier. This timing provides independent support for scenarios wherein microbial methane production was important in maintaining temperatures on the early Earth.en_US
dc.description.sponsorshipSimons Foundation (339603)en_US
dc.description.sponsorshipNational Science Foundation (U.S.) (EAR-1615426)en_US
dc.publisherNature Publishing Groupen_US
dc.relation.isversionofhttp://dx.doi.org/10.1038/s41559-018-0513-7en_US
dc.rightsArticle is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.en_US
dc.sourcebioRxiven_US
dc.titleHorizontal gene transfer constrains the timing of methanogen evolutionen_US
dc.typeArticleen_US
dc.identifier.citationWolfe, Joanna M., and Gregory P. Fournier. “Horizontal Gene Transfer Constrains the Timing of Methanogen Evolution.” Nature Ecology & Evolution, vol. 2, no. 5, May 2018, pp. 897–903. © 2018 The Authorsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciencesen_US
dc.contributor.mitauthorWolfe, Joanna Michelle
dc.contributor.mitauthorFournier, Gregory P.
dc.relation.journalNature Ecology & Evolutionen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dc.date.updated2018-09-26T15:43:46Z
dspace.orderedauthorsWolfe, Joanna M.; Fournier, Gregory P.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-2941-2514
dc.identifier.orcidhttps://orcid.org/0000-0003-1605-5455
mit.licensePUBLISHER_POLICYen_US


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