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    Subsurface carbon monoxide oxidation capacity revealed through genome-resolved metagenomics of a carboxydotroph

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    Author
    Mu, A; Thomas, BC; Banfield, JF; Moreau, JW
    Date
    2020-07-23
    Source Title
    Environmental Microbiology Reports
    Publisher
    WILEY
    University of Melbourne Author/s
    Moreau, John; Mu, Andre
    Affiliation
    School of Earth Sciences
    Microbiology and Immunology
    Metadata
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    Document Type
    Journal Article
    Citations
    Mu, A., Thomas, B. C., Banfield, J. F. & Moreau, J. W. (2020). Subsurface carbon monoxide oxidation capacity revealed through genome-resolved metagenomics of a carboxydotroph. ENVIRONMENTAL MICROBIOLOGY REPORTS, 12 (5), pp.525-533. https://doi.org/10.1111/1758-2229.12868.
    Access Status
    Open Access
    URI
    http://hdl.handle.net/11343/252480
    DOI
    10.1111/1758-2229.12868
    Abstract
    Microbial communities play important roles in the biogeochemical cycling of carbon in the Earth's deep subsurface. Previously, we demonstrated changes to the microbial community structure of a deep aquifer (1.4 km) receiving 150 tons of injected supercritical CO2 (scCO2 ) in a geosequestration experiment. The observed changes support a key role in the aquifer microbiome for the thermophilic CO-utilizing anaerobe Carboxydocella, which decreased in relative abundance post-scCO2 injection. Here, we present results from more detailed metagenomic profiling of this experiment, with genome resolution of the native carboxydotrophic Carboxydocella. We demonstrate a switch in CO-oxidation potential by Carboxydocella through analysis of its carbon monoxide dehydrogenase (CODH) gene before and after the geosequestration experiment. We discuss the potential impacts of scCO2 on subsurface flow of carbon and electrons from oxidation of the metabolic intermediate carbon monoxide (CO).

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