The DOI matches its Crossref record; 24 of the 24 references it cites were found in a registry or an index.
Hydrogen Consumption by Methanogens on the Early Earth
Abstract
It is possible that the first autotroph used chemical energy rather than light. This could have been the main source of primary production after the initial inventory of abiotic organic material had been depleted. The electron acceptor most readily available for use by this first chemoautotroph would have been CO2. The most abundant electron donor may have been H2 that would have been outgassing from volcanoes at a rate estimated to be as large as 10(12) moles yr-1, as well as from photo-oxidation of Fe+2. We report here that certain methanogens will consume H2 down to partial pressures as low as 4 Pa (4 x 10(-5) atm) with CO2 as the sole carbon source at a rate of 0.7 ng H2 min-1 microgram-1 cell protein. The lower limit of pH2 for growth of methanogens can be understood on the basis that the pH2 needs to be high enough for one ATP to be synthesized per CO2 reduced. The pH2 values needed for growth measured here are consistent with those measured by Stevens and McKinley for growth of methanogens in deep basalt aquifers. H2-consuming autotrophs are likely to have had a profound effect on the chemistry of the early atmosphere and to have been a dominant sink for H2 on the early Earth after life began rather than escape from the Earth's atmosphere to space.
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“The Archean lower atmosphere is unlikely to have been H2-rich given the antiquity of methanogens (23, 51, 197), some of which convert H2 into methane through a net reaction”
From The Archean atmosphere (2020) · cites this paper as [197]
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“The Archean lower atmosphere is unlikely to have been H2-rich given the antiquity of methanogens (23, 51, 197), some of which convert H2 into methane through a net reaction”
From The Archean atmosphere (2020) · cites this paper as [197]
Citations
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Cited by
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The occurrence and geoscience of natural hydrogen: A comprehensive review
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Metadata
- Authors
- Kral, T. A., Brink, K. M., Miller, S. L., & McKay, C. P.
- Affiliations
- University of Arkansas at Fayetteville (US)
- Ames Research Center (US)
- Venue
- Origins of life and evolution of the biosphere
- Published
- 1998-06
- Volume
- 28
- Issue
- 3
- Pages
- 311-319
- ISSN
- 0169-6149 (ISSN-L)
- 1573-0875
- OpenAlex
- W1666532264
- Cited by
- 107
- References
- 24
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 4 · 2023: 4 · 2022: 2 · 2020: 8 · 2019: 7 · 2018: 6 · 2017: 5 · 2016: 6 · 2015: 5 · 2014: 4 · 2013: 3 · 2012: 5
- FWCI
- 2.44
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- Locations
- Origins of Life and Evolution of Biospheres (publishedVersion)
- PubMed (publishedVersion)
- Funders
- National Aeronautics and Space Administration
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
- Physical Sciences › Environmental Science › Environmental Chemistry › Methane Hydrates and Related Phenomena
- Keywords
- methanogenic archaea, hydrogen consumption, early Earth, chemoautotrophy, CO2 reduction, hydrogen partial pressure, hydrogen outgassing, volcanic outgassing, primary production, early atmosphere, hydrogen sink, ATP production
- MeSH terms
- Carbon Dioxide, Culture Media, Electron Transport, Energy Metabolism, Hydrogen, Kinetics, Methane, Models, Biological, Thermodynamics, Methanobacterium, Methanococcus, Methanosarcina, Euryarchaeota
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