The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth)
<p>Industrial-scale mining of deep-sea polymetallic nodules will remove nodules in large areas of the sea floor. The regrowth of the nodules by metal precipitation is estimated to take millions of years. Thus, for future mining impact studies, it is crucial to understand the role of nodules in...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2020-06-01
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| Series: | Biogeosciences |
| Online Access: | https://www.biogeosciences.net/17/3203/2020/bg-17-3203-2020.pdf |
| _version_ | 1818291860787953664 |
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| author | M. Molari F. Janssen F. Janssen T. R. Vonnahme T. R. Vonnahme F. Wenzhöfer F. Wenzhöfer A. Boetius A. Boetius |
| author_facet | M. Molari F. Janssen F. Janssen T. R. Vonnahme T. R. Vonnahme F. Wenzhöfer F. Wenzhöfer A. Boetius A. Boetius |
| author_sort | M. Molari |
| collection | DOAJ |
| description | <p>Industrial-scale mining of deep-sea polymetallic nodules will
remove nodules in large areas of the sea floor. The regrowth of the nodules
by metal precipitation is estimated to take millions of years. Thus, for
future mining impact studies, it is crucial to understand the role of
nodules in shaping microbial diversity and function in deep-sea
environments. Here we investigated microbial-community composition based on
16S rRNA gene sequences retrieved from sediments and nodules of the Peru
Basin (4130–4198 m water depth). The nodule field of the Peru Basin
showed a typical deep-sea microbiome, with dominance of the classes
Gammaproteobacteria, Alphaproteobacteria, Deltaproteobacteria, and
Acidimicrobiia. Nodules and sediments host distinct bacterial and archaeal
communities, with nodules showing lower diversity and a higher proportion of
sequences related to potential metal-cycling Bacteria (i.e.
Magnetospiraceae, Hyphomicrobiaceae), bacterial and archaeal nitrifiers
(i.e. <i>AqS1</i>, unclassified Nitrosomonadaceae, <i>Nitrosopumilus</i>, <i>Nitrospina</i>, <i>Nitrospira</i>), and bacterial sequences found
in the oceanic crust, nodules, hydrothermal deposits, and sessile fauna. Sediment
and nodule communities overall shared a low proportion of operational
taxonomic units (OTUs; 21 % for Bacteria and 19 % for Archaea). Our
results show that nodules represent a specific ecological niche (i.e. hard
substrate, high metal concentrations, and sessile fauna), with a potentially
relevant role in organic-carbon degradation. Differences in nodule community
composition (e.g. Mn-cycling bacteria, nitrifiers) between the
Clarion–Clipperton Fracture Zone (CCZ) and the Peru Basin suggest that
changes in environmental setting (e.g. sedimentation rates) also play a
significant role in structuring the nodule microbiome.</p> |
| first_indexed | 2024-12-13T02:50:47Z |
| format | Article |
| id | doaj.art-f1ec1acb82054dc29fc7a08b64efc3ac |
| institution | Directory Open Access Journal |
| issn | 1726-4170 1726-4189 |
| language | English |
| last_indexed | 2024-12-13T02:50:47Z |
| publishDate | 2020-06-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Biogeosciences |
| spelling | doaj.art-f1ec1acb82054dc29fc7a08b64efc3ac2022-12-22T00:02:04ZengCopernicus PublicationsBiogeosciences1726-41701726-41892020-06-01173203322210.5194/bg-17-3203-2020The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth)M. Molari0F. Janssen1F. Janssen2T. R. Vonnahme3T. R. Vonnahme4F. Wenzhöfer5F. Wenzhöfer6A. Boetius7A. Boetius8Max Planck Institute for Marine Microbiology, Bremen, GermanyMax Planck Institute for Marine Microbiology, Bremen, GermanyHGF MPG Joint Research Group for Deep-Sea Ecology and Technology, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, GermanyMax Planck Institute for Marine Microbiology, Bremen, Germanypresent address: UiT the Arctic University of Tromsø, Tromsø, NorwayMax Planck Institute for Marine Microbiology, Bremen, GermanyHGF MPG Joint Research Group for Deep-Sea Ecology and Technology, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, GermanyMax Planck Institute for Marine Microbiology, Bremen, GermanyHGF MPG Joint Research Group for Deep-Sea Ecology and Technology, Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany<p>Industrial-scale mining of deep-sea polymetallic nodules will remove nodules in large areas of the sea floor. The regrowth of the nodules by metal precipitation is estimated to take millions of years. Thus, for future mining impact studies, it is crucial to understand the role of nodules in shaping microbial diversity and function in deep-sea environments. Here we investigated microbial-community composition based on 16S rRNA gene sequences retrieved from sediments and nodules of the Peru Basin (4130–4198 m water depth). The nodule field of the Peru Basin showed a typical deep-sea microbiome, with dominance of the classes Gammaproteobacteria, Alphaproteobacteria, Deltaproteobacteria, and Acidimicrobiia. Nodules and sediments host distinct bacterial and archaeal communities, with nodules showing lower diversity and a higher proportion of sequences related to potential metal-cycling Bacteria (i.e. Magnetospiraceae, Hyphomicrobiaceae), bacterial and archaeal nitrifiers (i.e. <i>AqS1</i>, unclassified Nitrosomonadaceae, <i>Nitrosopumilus</i>, <i>Nitrospina</i>, <i>Nitrospira</i>), and bacterial sequences found in the oceanic crust, nodules, hydrothermal deposits, and sessile fauna. Sediment and nodule communities overall shared a low proportion of operational taxonomic units (OTUs; 21 % for Bacteria and 19 % for Archaea). Our results show that nodules represent a specific ecological niche (i.e. hard substrate, high metal concentrations, and sessile fauna), with a potentially relevant role in organic-carbon degradation. Differences in nodule community composition (e.g. Mn-cycling bacteria, nitrifiers) between the Clarion–Clipperton Fracture Zone (CCZ) and the Peru Basin suggest that changes in environmental setting (e.g. sedimentation rates) also play a significant role in structuring the nodule microbiome.</p>https://www.biogeosciences.net/17/3203/2020/bg-17-3203-2020.pdf |
| spellingShingle | M. Molari F. Janssen F. Janssen T. R. Vonnahme T. R. Vonnahme F. Wenzhöfer F. Wenzhöfer A. Boetius A. Boetius The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) Biogeosciences |
| title | The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) |
| title_full | The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) |
| title_fullStr | The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) |
| title_full_unstemmed | The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) |
| title_short | The contribution of microbial communities in polymetallic nodules to the diversity of the deep-sea microbiome of the Peru Basin (4130–4198 m depth) |
| title_sort | contribution of microbial communities in polymetallic nodules to the diversity of the deep sea microbiome of the peru basin 4130 4198 thinsp m depth |
| url | https://www.biogeosciences.net/17/3203/2020/bg-17-3203-2020.pdf |
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