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Lithoautotrophic Microbial Ecosystems in Deep Basalt Aquifers
Abstract
Bacterial communities were detected in deep crystalline rock aquifers within the Columbia River Basalt Group (CRB). CRB ground waters contained up to 60 μM dissolved H 2 and autotrophic microorganisms outnumbered heterotrophs. Stable carbon isotope measurements implied that autotrophic methanogenesis dominated this ecosystem and was coupled to the depletion of dissolved inorganic carbon. In laboratory experiments, H 2 , a potential energy source for bacteria, was produced by reactions between crushed basalt and anaerobic water. Microcosms containing only crushed basalt and ground water supported microbial growth. These results suggest that the CRB contains a lithoautotrophic microbial ecosystem that is independent of photosynthetic primary production.
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Cites
On the possibility of chemosynthetic ecosystems in subsurface habitats on Mars
Boston, P. J., Ivanov, M. V., & P. McKay, C. (1992) · Icarus · doi:10.1016/0019-1035(92)90045-9 · Cited by 325
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McKay, D. S., Gibson, E. K., Thomas-Keprta, K. L., Vali, H., Romanek, C. S., Clemett, S. J., Chillier, X. D. F., Maechling, C. R., & Zare, R. N. (1996) · Science · doi:10.1126/science.273.5277.924 · Cited by 1,883
Bacteria and archaea on Earth and their abundance in biofilms
Flemming, H.-C., & Wuertz, S. (2019) · Nature Reviews Microbiology · doi:10.1038/s41579-019-0158-9 · Cited by 1,729
The Hydrogen Hypothesis for the First Eukaryote
Martin, W., & Müller, M. (1998) · Nature · doi:10.1038/32096 · Cited by 1,282
Detection of methane in the atmosphere of Mars
Formisano, V., Atreya, S., Encrenaz, T., Ignatiev, N., & Giuranna, M. (2004) · Science · doi:10.1126/science.1101732 · Cited by 781
A hydrogen-based subsurface microbial community dominated by methanogens
Chapelle, F. H., O'Neill, K., Bradley, P. M., Methé, B. A., Ciufo, S. A., Knobel, L. L., & Lovley, D. R. (2002) · Nature · doi:10.1038/415312a · Cited by 506
Metadata
- Authors
- Stevens, T. O., & McKinley, J. P.
- Venue
- Science
- Published
- 1995-10-20
- Volume
- 270
- Issue
- 5235
- Pages
- 450-455
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1979532470
- Cited by
- 749
- References
- 1
- FWCI
- 29.57
- Type
- journal article
- Language
- en
- Open access
- closed
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- Stevens, T. O., & McKinley, J. P. (1995). Lithoautotrophic Microbial Ecosystems in Deep Basalt Aquifers. Science. https://doi.org/10.1126/science.270.5235.450
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
