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Communal metabolism by Methylococcaceae and Methylophilaceae is driving rapid aerobic methane oxidation in sediments of a shallow seep near Elba, Italy
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Taubert, Martin, Grob, Carolina, Crombie, Andrew, Howat, Alexandra M., Burns, Oliver J., Weber, Miriam, Lott, Christian, Kaster, Anne‐Kristin, Vollmers, John, Jehmlich, Nico, Bergen, Martin, Chen, Yin and Murrell, J. Colin (2019) Communal metabolism by Methylococcaceae and Methylophilaceae is driving rapid aerobic methane oxidation in sediments of a shallow seep near Elba, Italy. Environmental Microbiology, 21 (10). pp. 3780-3795. doi:10.1111/1462-2920.14728 ISSN 1462-2912.
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WRAP-Communal-Methylococcaceae-Methylophilaceae-oxidation-sediments-Chen-2019.pdf - Accepted Version - Requires a PDF viewer. Download (1086Kb) | Preview |
Official URL: https://doi.org/10.1111/1462-2920.14728
Abstract
The release of abiotic methane from marine seeps into the atmosphere is a major source of this potent greenhouse gas. Methanotrophic microorganisms in methane seeps use methane as carbon and energy source, thus significantly mitigating global methane emissions. Here, we investigated microbial methane oxidation at the sediment–water interface of a shallow marine methane seep. Metagenomics and metaproteomics, combined with 13C‐methane stable isotope probing, demonstrated that various members of the gammaproteobacterial family Methylococcaceae were the key players for methane oxidation, catalysing the first reaction step to methanol. We observed a transfer of carbon to methanol‐oxidizing methylotrophs of the betaproteobacterial family Methylophilaceae, suggesting an interaction between methanotrophic and methylotrophic microorganisms that allowed for rapid methane oxidation. From our microcosms, we estimated methane oxidation rates of up to 871 nmol of methane per gram sediment per day. This implies that more than 50% of methane at the seep is removed by microbial oxidation at the sediment–water interface, based on previously reported in situ methane fluxes. The organic carbon produced was further assimilated by different heterotrophic microbes, demonstrating that the methane‐oxidizing community supported a complex trophic network. Our results provide valuable eco‐physiological insights into this specialized microbial community performing an ecosystem function of global relevance.
Item Type: | Journal Article | ||||||||||||||||||
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Subjects: | Q Science > QH Natural history > QH301 Biology | ||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- ) | ||||||||||||||||||
SWORD Depositor: | Library Publications Router | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Marine microbial ecology, Methane -- Oxidation, Methylotrophic microorganisms | ||||||||||||||||||
Journal or Publication Title: | Environmental Microbiology | ||||||||||||||||||
Publisher: | Blackwell | ||||||||||||||||||
ISSN: | 1462-2912 | ||||||||||||||||||
Official Date: | October 2019 | ||||||||||||||||||
Dates: |
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Volume: | 21 | ||||||||||||||||||
Number: | 10 | ||||||||||||||||||
Page Range: | pp. 3780-3795 | ||||||||||||||||||
DOI: | 10.1111/1462-2920.14728 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Reuse Statement (publisher, data, author rights): | "This is the peer reviewed version of the following article: Taubert, M. , Grob, C. , Crombie, A. , Howat, A. M., Burns, O. J., Weber, M. , Lott, C. , Kaster, A. , Vollmers, J. , Jehmlich, N. , von Bergen, M. , Chen, Y. and Murrell, J. C. (2019), Communal metabolism by Methylococcaceae and Methylophilaceae is driving rapid aerobic methane oxidation in sediments of a shallow seep near Elba, Italy. Environ Microbiol. which has been published in final form at https://doi.org/10.1111/1462-2920.14728. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions." | ||||||||||||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||||||||||||
Date of first compliant deposit: | 13 August 2019 | ||||||||||||||||||
Date of first compliant Open Access: | 3 July 2020 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
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