Homeostasis drives intense microbial trace metal processing on marine particles
As marine microorganisms and environmental conditions coevolved over geological timescales, metals have been incorporated into all essential metabolic processes. In the modern ocean, metals are present from trace amounts limiting microbial growth to toxic concentrations. Dissolved trace metals are a...
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Online Access: | https://doi.org/10.1002/lno.11923 http://ecite.utas.edu.au/146316 |
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ftunivtasecite:oai:ecite.utas.edu.au:146316 2023-05-15T16:33:55+02:00 Homeostasis drives intense microbial trace metal processing on marine particles Debeljak, P Blain, S Bowie, A van der Merwe, P Bayer, B Obernosterer, I 2021 https://doi.org/10.1002/lno.11923 http://ecite.utas.edu.au/146316 en eng Amer Soc Limnology Oceanography http://dx.doi.org/10.1002/lno.11923 Debeljak, P and Blain, S and Bowie, A and van der Merwe, P and Bayer, B and Obernosterer, I, Homeostasis drives intense microbial trace metal processing on marine particles, Limnology and Oceanography, 66, (10) pp. 3842-3855. ISSN 0024-3590 (2021) [Refereed Article] http://ecite.utas.edu.au/146316 Earth Sciences Oceanography Chemical oceanography Refereed Article PeerReviewed 2021 ftunivtasecite https://doi.org/10.1002/lno.11923 2022-08-29T22:18:28Z As marine microorganisms and environmental conditions coevolved over geological timescales, metals have been incorporated into all essential metabolic processes. In the modern ocean, metals are present from trace amounts limiting microbial growth to toxic concentrations. Dissolved trace metals are a major bioavailable reservoir. However, the acquisition of metals from marine particles remains largely unexplored. Here, we combined chemical characterization and a comparative metatranscriptomics approach to investigate the availability of nine metals of biological importance on particles collected in the region of Heard Island (Indian sector of the Southern Ocean). Elemental ratios identified particulate matter as a potential source of metals for prokaryotes. The expression of genes for the uptake of metals through various mechanisms demonstrated that particles are a bioavailable reservoir. But genes involved in the control of resistance to metal toxicity, storage, sensing, and regulation were also highly expressed. Our observations suggest that homeostasis associated with a diverse prokaryotic community is the overarching mechanism that enhances the trace element processing on particles. These results provide clues that microbial activity on particles is critical in the redistribution of trace elements between different fractions and chemical forms in the ocean. Article in Journal/Newspaper Heard Island Southern Ocean eCite UTAS (University of Tasmania) Heard Island Indian Southern Ocean Limnology and Oceanography |
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Open Polar |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Earth Sciences Oceanography Chemical oceanography |
spellingShingle |
Earth Sciences Oceanography Chemical oceanography Debeljak, P Blain, S Bowie, A van der Merwe, P Bayer, B Obernosterer, I Homeostasis drives intense microbial trace metal processing on marine particles |
topic_facet |
Earth Sciences Oceanography Chemical oceanography |
description |
As marine microorganisms and environmental conditions coevolved over geological timescales, metals have been incorporated into all essential metabolic processes. In the modern ocean, metals are present from trace amounts limiting microbial growth to toxic concentrations. Dissolved trace metals are a major bioavailable reservoir. However, the acquisition of metals from marine particles remains largely unexplored. Here, we combined chemical characterization and a comparative metatranscriptomics approach to investigate the availability of nine metals of biological importance on particles collected in the region of Heard Island (Indian sector of the Southern Ocean). Elemental ratios identified particulate matter as a potential source of metals for prokaryotes. The expression of genes for the uptake of metals through various mechanisms demonstrated that particles are a bioavailable reservoir. But genes involved in the control of resistance to metal toxicity, storage, sensing, and regulation were also highly expressed. Our observations suggest that homeostasis associated with a diverse prokaryotic community is the overarching mechanism that enhances the trace element processing on particles. These results provide clues that microbial activity on particles is critical in the redistribution of trace elements between different fractions and chemical forms in the ocean. |
format |
Article in Journal/Newspaper |
author |
Debeljak, P Blain, S Bowie, A van der Merwe, P Bayer, B Obernosterer, I |
author_facet |
Debeljak, P Blain, S Bowie, A van der Merwe, P Bayer, B Obernosterer, I |
author_sort |
Debeljak, P |
title |
Homeostasis drives intense microbial trace metal processing on marine particles |
title_short |
Homeostasis drives intense microbial trace metal processing on marine particles |
title_full |
Homeostasis drives intense microbial trace metal processing on marine particles |
title_fullStr |
Homeostasis drives intense microbial trace metal processing on marine particles |
title_full_unstemmed |
Homeostasis drives intense microbial trace metal processing on marine particles |
title_sort |
homeostasis drives intense microbial trace metal processing on marine particles |
publisher |
Amer Soc Limnology Oceanography |
publishDate |
2021 |
url |
https://doi.org/10.1002/lno.11923 http://ecite.utas.edu.au/146316 |
geographic |
Heard Island Indian Southern Ocean |
geographic_facet |
Heard Island Indian Southern Ocean |
genre |
Heard Island Southern Ocean |
genre_facet |
Heard Island Southern Ocean |
op_relation |
http://dx.doi.org/10.1002/lno.11923 Debeljak, P and Blain, S and Bowie, A and van der Merwe, P and Bayer, B and Obernosterer, I, Homeostasis drives intense microbial trace metal processing on marine particles, Limnology and Oceanography, 66, (10) pp. 3842-3855. ISSN 0024-3590 (2021) [Refereed Article] http://ecite.utas.edu.au/146316 |
op_doi |
https://doi.org/10.1002/lno.11923 |
container_title |
Limnology and Oceanography |
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1766023665982373888 |