dc.contributor.author | Tsola, SL | |
dc.contributor.author | Prevodnik, AA | |
dc.contributor.author | Sinclair, LF | |
dc.contributor.author | Sanders, IA | |
dc.contributor.author | Economou, CK | |
dc.contributor.author | Eyice, Ö | |
dc.date.accessioned | 2024-07-25T13:58:27Z | |
dc.date.available | 2024-07-25T13:58:27Z | |
dc.date.issued | 2024-07-20 | |
dc.identifier.citation | Tsola, S.L., Prevodnik, A.A., Sinclair, L.F. et al. Methanomethylovorans are the dominant dimethylsulfide-degrading methanogens in gravel and sandy river sediment microcosms. Environmental Microbiome 19, 51 (2024). https://doi.org/10.1186/s40793-024-00591-4 | en_US |
dc.identifier.other | 51 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/98411 | |
dc.description.abstract | <jats:title>Abstract</jats:title><jats:sec> <jats:title>Background</jats:title> <jats:p>Rivers and streams are important components of the global carbon cycle and methane budget. However, our understanding of the microbial diversity and the metabolic pathways underpinning methylotrophic methane production in river sediments is limited. Dimethylsulfide is an important methylated compound, found in freshwater sediments. Yet, the magnitude of DMS-dependent methanogenesis nor the methanogens carrying out this process in river sediments have been explored before. This study addressed this knowledge gap in DMS-dependent methanogenesis in gravel and sandy river sediments.</jats:p> </jats:sec><jats:sec> <jats:title>Results</jats:title> <jats:p>Significant methane production via DMS degradation was found in all sediment microcosms. Sandy, less permeable river sediments had higher methane yields (83 and 92%) than gravel, permeable sediments (40 and 48%). There was no significant difference between the methanogen diversity in DMS-amended gravel and sandy sediment microcosms, which <jats:italic>Methanomethylovorans</jats:italic> dominated. Metagenomics data analysis also showed the dominance of <jats:italic>Methanomethylovorans</jats:italic> and <jats:italic>Methanosarcina</jats:italic>. DMS-specific methyltransferase genes (<jats:italic>mts</jats:italic>) were found in very low relative abundances whilst the methanol-, trimethylamine- and dimethylamine-specific methyltransferase genes (<jats:italic>mtaA</jats:italic>, <jats:italic>mttB</jats:italic> and <jats:italic>mtbB</jats:italic>) had the highest relative abundances, suggesting their involvement in DMS-dependent methanogenesis.</jats:p> </jats:sec><jats:sec> <jats:title>Conclusions</jats:title> <jats:p>This is the first study demonstrating a significant potential for DMS-dependent methanogenesis in river sediments with contrasting geologies. <jats:italic>Methanomethylovorans</jats:italic> were the dominant methylotrophic methanogen in all river sediment microcosms. Methyltransferases specific to methylotrophic substrates other than DMS are likely key enzymes in DMS-dependent methanogenesis, highlighting their versatility and importance in the methane cycle in freshwater sediments, which would warrant further study.</jats:p> </jats:sec> | en_US |
dc.language | en | |
dc.publisher | Springer Science and Business Media LLC | en_US |
dc.relation.ispartof | Environmental Microbiome | |
dc.rights | This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data. | |
dc.title | Methanomethylovorans are the dominant dimethylsulfide-degrading methanogens in gravel and sandy river sediment microcosms | en_US |
dc.type | Article | en_US |
dc.rights.holder | © The Author(s) 2024 | |
dc.identifier.doi | 10.1186/s40793-024-00591-4 | |
pubs.issue | 1 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published online | en_US |
pubs.publisher-url | http://dx.doi.org/10.1186/s40793-024-00591-4 | en_US |
pubs.volume | 19 | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
rioxxterms.funder.project | b215eee3-195d-4c4f-a85d-169a4331c138 | en_US |