Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria
Foraminifera in sediments exposed to gas-hydrate dissociation are not expected to have cellular adaptations that facilitate inhabitation of chemosynthesis-based ecosystems because, to date, there are no known endemic seep foraminifera. To establish if foraminifera inhabit sediments impacted by gas-h...
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ftpubmed:oai:pubmedcentral.nih.gov:6045607 2023-05-15T14:56:09+02:00 Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria Bernhard, Joan M. Panieri, Giuliana 2018-07-13 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6045607/ http://www.ncbi.nlm.nih.gov/pubmed/30006509 https://doi.org/10.1038/s41598-018-28871-3 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6045607/ http://www.ncbi.nlm.nih.gov/pubmed/30006509 http://dx.doi.org/10.1038/s41598-018-28871-3 © The Author(s) 2018 Open Access 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Article Text 2018 ftpubmed https://doi.org/10.1038/s41598-018-28871-3 2018-07-22T00:31:17Z Foraminifera in sediments exposed to gas-hydrate dissociation are not expected to have cellular adaptations that facilitate inhabitation of chemosynthesis-based ecosystems because, to date, there are no known endemic seep foraminifera. To establish if foraminifera inhabit sediments impacted by gas-hydrate dissociation, we examined the cellular ultrastructure of Melonis barleeanus (Williamson, 1858) from the Vestnesa gas hydrate province (Arctic Ocean, west of Svalbard at ~79 °N; ~1200-m depth; n = 4). From sediments with gas hydrate indicators, living M. barleeanus had unusual pore plugs composed of a thick, fibrous meshwork; mitochondria were concentrated at the cell periphery, under pore plugs. While there was no evidence of endosymbioses with prokaryotes, most M. barleeanus specimens were associated with what appear to be Type I methanotrophic bacteria. One foraminifer had a particularly large bolus of these microbes concentrated near its aperture. This is the first documented instance of bona fide living M. barleeanus in gas-hydrate sediments and first documentation of a foraminifer living in close association with putative methanotrophs. Our observations have implications to paleoclimate records utilizing this foundational foraminiferal species. Text Arctic Arctic Ocean Foraminifera* Svalbard PubMed Central (PMC) Arctic Arctic Ocean Svalbard Williamson ENVELOPE(-65.383,-65.383,-67.717,-67.717) Scientific Reports 8 1 |
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Article Bernhard, Joan M. Panieri, Giuliana Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria |
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Article |
description |
Foraminifera in sediments exposed to gas-hydrate dissociation are not expected to have cellular adaptations that facilitate inhabitation of chemosynthesis-based ecosystems because, to date, there are no known endemic seep foraminifera. To establish if foraminifera inhabit sediments impacted by gas-hydrate dissociation, we examined the cellular ultrastructure of Melonis barleeanus (Williamson, 1858) from the Vestnesa gas hydrate province (Arctic Ocean, west of Svalbard at ~79 °N; ~1200-m depth; n = 4). From sediments with gas hydrate indicators, living M. barleeanus had unusual pore plugs composed of a thick, fibrous meshwork; mitochondria were concentrated at the cell periphery, under pore plugs. While there was no evidence of endosymbioses with prokaryotes, most M. barleeanus specimens were associated with what appear to be Type I methanotrophic bacteria. One foraminifer had a particularly large bolus of these microbes concentrated near its aperture. This is the first documented instance of bona fide living M. barleeanus in gas-hydrate sediments and first documentation of a foraminifer living in close association with putative methanotrophs. Our observations have implications to paleoclimate records utilizing this foundational foraminiferal species. |
format |
Text |
author |
Bernhard, Joan M. Panieri, Giuliana |
author_facet |
Bernhard, Joan M. Panieri, Giuliana |
author_sort |
Bernhard, Joan M. |
title |
Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria |
title_short |
Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria |
title_full |
Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria |
title_fullStr |
Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria |
title_full_unstemmed |
Keystone Arctic paleoceanographic proxy association with putative methanotrophic bacteria |
title_sort |
keystone arctic paleoceanographic proxy association with putative methanotrophic bacteria |
publisher |
Nature Publishing Group UK |
publishDate |
2018 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6045607/ http://www.ncbi.nlm.nih.gov/pubmed/30006509 https://doi.org/10.1038/s41598-018-28871-3 |
long_lat |
ENVELOPE(-65.383,-65.383,-67.717,-67.717) |
geographic |
Arctic Arctic Ocean Svalbard Williamson |
geographic_facet |
Arctic Arctic Ocean Svalbard Williamson |
genre |
Arctic Arctic Ocean Foraminifera* Svalbard |
genre_facet |
Arctic Arctic Ocean Foraminifera* Svalbard |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6045607/ http://www.ncbi.nlm.nih.gov/pubmed/30006509 http://dx.doi.org/10.1038/s41598-018-28871-3 |
op_rights |
© The Author(s) 2018 Open Access 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41598-018-28871-3 |
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Scientific Reports |
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