Microbial diversity and oil biodegradation potential of northern Barents Sea sediments.
The Arctic, an essential ecosystem on Earth, is subject to pronounced anthropogenic pressures, most notable being the climate change and risks of crude oil pollution. As crucial elements of Arctic environments, benthic microbiomes are involved in climate-relevant biogeochemical cycles and hold the p...
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ftpubmed:38969457 2024-09-15T17:57:51+00:00 Microbial diversity and oil biodegradation potential of northern Barents Sea sediments. Chen, Song-Can Musat, Florin Richnow, Hans-Hermann Krüger, Martin 2024 Dec https://doi.org/10.1016/j.jes.2023.12.010 https://pubmed.ncbi.nlm.nih.gov/38969457 eng eng Elsevier Science https://doi.org/10.1016/j.jes.2023.12.010 https://pubmed.ncbi.nlm.nih.gov/38969457 Copyright © 2023. Published by Elsevier B.V. J Environ Sci (China) ISSN:1001-0742 Volume:146 Arctic Benthic microbiomes Biodiversity Deep-sea sediments Oil biodegradation Journal Article 2024 ftpubmed https://doi.org/10.1016/j.jes.2023.12.010 2024-07-06T16:01:00Z The Arctic, an essential ecosystem on Earth, is subject to pronounced anthropogenic pressures, most notable being the climate change and risks of crude oil pollution. As crucial elements of Arctic environments, benthic microbiomes are involved in climate-relevant biogeochemical cycles and hold the potential to remediate upcoming contamination. Yet, the Arctic benthic microbiomes are among the least explored biomes on the planet. Here we combined geochemical analyses, incubation experiments, and microbial community profiling to detail the biogeography and biodegradation potential of Arctic sedimentary microbiomes in the northern Barents Sea. The results revealed a predominance of bacterial and archaea phyla typically found in the deep marine biosphere, such as Chloroflexi, Atribacteria, and Bathyarcheaota. The topmost benthic communities were spatially structured by sedimentary organic carbon, lacking a clear distinction among geographic regions. With increasing sediment depth, the community structure exhibited stratigraphic variability that could be correlated to redox geochemistry of sediments. The benthic microbiomes harbored multiple taxa capable of oxidizing hydrocarbons using aerobic and anaerobic pathways. Incubation of surface sediments with crude oil led to proliferation of several genera from the so-called rare biosphere. These include Alkalimarinus and Halioglobus, previously unrecognized as hydrocarbon-degrading genera, both harboring the full genetic potential for aerobic alkane oxidation. These findings increase our understanding of the taxonomic inventory and functional potential of unstudied benthic microbiomes in the Arctic. Article in Journal/Newspaper Barents Sea Climate change PubMed Central (PMC) Journal of Environmental Sciences 146 283 297 |
institution |
Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
Arctic Benthic microbiomes Biodiversity Deep-sea sediments Oil biodegradation |
spellingShingle |
Arctic Benthic microbiomes Biodiversity Deep-sea sediments Oil biodegradation Chen, Song-Can Musat, Florin Richnow, Hans-Hermann Krüger, Martin Microbial diversity and oil biodegradation potential of northern Barents Sea sediments. |
topic_facet |
Arctic Benthic microbiomes Biodiversity Deep-sea sediments Oil biodegradation |
description |
The Arctic, an essential ecosystem on Earth, is subject to pronounced anthropogenic pressures, most notable being the climate change and risks of crude oil pollution. As crucial elements of Arctic environments, benthic microbiomes are involved in climate-relevant biogeochemical cycles and hold the potential to remediate upcoming contamination. Yet, the Arctic benthic microbiomes are among the least explored biomes on the planet. Here we combined geochemical analyses, incubation experiments, and microbial community profiling to detail the biogeography and biodegradation potential of Arctic sedimentary microbiomes in the northern Barents Sea. The results revealed a predominance of bacterial and archaea phyla typically found in the deep marine biosphere, such as Chloroflexi, Atribacteria, and Bathyarcheaota. The topmost benthic communities were spatially structured by sedimentary organic carbon, lacking a clear distinction among geographic regions. With increasing sediment depth, the community structure exhibited stratigraphic variability that could be correlated to redox geochemistry of sediments. The benthic microbiomes harbored multiple taxa capable of oxidizing hydrocarbons using aerobic and anaerobic pathways. Incubation of surface sediments with crude oil led to proliferation of several genera from the so-called rare biosphere. These include Alkalimarinus and Halioglobus, previously unrecognized as hydrocarbon-degrading genera, both harboring the full genetic potential for aerobic alkane oxidation. These findings increase our understanding of the taxonomic inventory and functional potential of unstudied benthic microbiomes in the Arctic. |
format |
Article in Journal/Newspaper |
author |
Chen, Song-Can Musat, Florin Richnow, Hans-Hermann Krüger, Martin |
author_facet |
Chen, Song-Can Musat, Florin Richnow, Hans-Hermann Krüger, Martin |
author_sort |
Chen, Song-Can |
title |
Microbial diversity and oil biodegradation potential of northern Barents Sea sediments. |
title_short |
Microbial diversity and oil biodegradation potential of northern Barents Sea sediments. |
title_full |
Microbial diversity and oil biodegradation potential of northern Barents Sea sediments. |
title_fullStr |
Microbial diversity and oil biodegradation potential of northern Barents Sea sediments. |
title_full_unstemmed |
Microbial diversity and oil biodegradation potential of northern Barents Sea sediments. |
title_sort |
microbial diversity and oil biodegradation potential of northern barents sea sediments. |
publisher |
Elsevier Science |
publishDate |
2024 |
url |
https://doi.org/10.1016/j.jes.2023.12.010 https://pubmed.ncbi.nlm.nih.gov/38969457 |
genre |
Barents Sea Climate change |
genre_facet |
Barents Sea Climate change |
op_source |
J Environ Sci (China) ISSN:1001-0742 Volume:146 |
op_relation |
https://doi.org/10.1016/j.jes.2023.12.010 https://pubmed.ncbi.nlm.nih.gov/38969457 |
op_rights |
Copyright © 2023. Published by Elsevier B.V. |
op_doi |
https://doi.org/10.1016/j.jes.2023.12.010 |
container_title |
Journal of Environmental Sciences |
container_volume |
146 |
container_start_page |
283 |
op_container_end_page |
297 |
_version_ |
1810434055808745472 |