Cited by 160Origins and Evolution of LifeProtist diversity and phylogenyPaleontology and Stratigraphy of Fossils

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Horizontal gene transfer constrains the timing of methanogen evolution

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Wolfe, Joanna M., Fournier, Gregory P.·2018·Nature Ecology & Evolution

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Abstract

Microbial 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.

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Authors
Wolfe, J. M., & Fournier, G. P.
Affiliations
Massachusetts Institute of Technology (US)
Corresponding author
Wolfe, Joanna M.
Venue
Nature Ecology & Evolution
Published
2018-04-02
Volume
2
Issue
5
Pages
897-903
ISSN
2397-334X (ISSN-L)
OpenAlex
W2794637696
Cited by
160
References
62
Citations by year
2026: 18 · 2025: 22 · 2024: 18 · 2023: 16 · 2022: 28 · 2021: 18 · 2020: 12 · 2019: 10 · 2018: 16
FWCI
7.55
Type
journal article
Language
en
Open access
Locations
  • Nature Ecology & Evolution (publishedVersion)
  • PubMed (publishedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
Funders
  • National Science Foundation (1615426)
  • Massachusetts Green High Performance Computing Center
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Protist diversity and phylogeny
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
Keywords
horizontal gene transfer, methanogenesis, methanogenic archaea, archaea, cyanobacteria, molecular clock, divergence time estimation, Euryarchaeota, molecular phylogeny
MeSH terms
Cyanobacteria, Biological Evolution, Methane, Phylogeny, Temperature, Evolution, Planetary, Euryarchaeota, Gene Transfer, Horizontal

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