dc.contributor.author |
Dithugoe, Choaro D
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|
dc.contributor.author |
Bezuidt, OKI
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|
dc.contributor.author |
Cavan, EL
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|
dc.contributor.author |
Froneman, WP
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|
dc.contributor.author |
Thomalla, Sandy J
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dc.contributor.author |
Makhalanyane, TP
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dc.date.accessioned |
2023-10-13T12:23:40Z |
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dc.date.available |
2023-10-13T12:23:40Z |
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dc.date.issued |
2023-04 |
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dc.identifier.citation |
Dithugoe, C.D., Bezuidt, O., Cavan, E., Froneman, W., Thomalla, S.J. & Makhalanyane, T. 2023. Bacteria and archaea regulate particulate organic matter export in suspended and sinking marine particle fractions. <i>MSphere, 8(3).</i> http://hdl.handle.net/10204/13156 |
en_ZA |
dc.identifier.issn |
2379-5042 |
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dc.identifier.uri |
https://doi.org/10.1128/msphere.00420-22
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|
dc.identifier.uri |
http://hdl.handle.net/10204/13156
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|
dc.description.abstract |
The biological carbon pump (BCP) in the Southern Ocean is driven by phytoplankton productivity and is a significant organic matter sink. However, the role of particle-attached (PA) and free-living (FL) prokaryotes (bacteria and archaea) and their diversity in influencing the efficiency of the BCP is still unclear. To investigate this, we analyzed the metagenomes linked to suspended and sinking marine particles from the Sub-Antarctic Southern Ocean Time Series (SOTS) by deploying a Marine Snow Catcher (MSC), obtaining suspended and sinking particulate material, determining organic carbon and nitrogen flux, and constructing metagenome-assembled genomes (MAGs). The suspended and sinking particle-pools were dominated by bacteria with the potential to degrade organic carbon. Bacterial communities associated with the sinking fraction had more genes related to the degradation of complex organic carbon than those in the suspended fraction. Archaea had the potential to drive nitrogen metabolism via nitrite and ammonia oxidation, altering organic nitrogen concentration. The data revealed several pathways for chemoautotrophy and the secretion of recalcitrant dissolved organic carbon (RDOC) from CO2, with bacteria and archaea potentially sequestering particulate organic matter (POM) via the production of RDOC. These findings provide insights into the diversity and function of prokaryotes in suspended and sinking particles and their role in organic carbon/nitrogen export in the Southern Ocean. |
en_US |
dc.format |
Fulltext |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
https://journals.asm.org/doi/10.1128/msphere.00420-22 |
en_US |
dc.source |
MSphere, 8(3) |
en_US |
dc.subject |
Carbon export |
en_US |
dc.subject |
Functional capacity |
en_US |
dc.subject |
Marine fractions |
en_US |
dc.subject |
Marine Snow Catcher |
en_US |
dc.subject |
Metagenomics |
en_US |
dc.subject |
Particulate organic matter |
en_US |
dc.subject |
Pokaryotes |
en_US |
dc.subject |
Southern Ocean |
en_US |
dc.title |
Bacteria and archaea regulate particulate organic matter export in suspended and sinking marine particle fractions |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
17pp |
en_US |
dc.description.note |
Copyright © 2023 Dithugoe et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license. |
en_US |
dc.description.cluster |
Smart Places |
en_US |
dc.description.impactarea |
Ocean Systems and Climate |
en_US |
dc.identifier.apacitation |
Dithugoe, C. D., Bezuidt, O., Cavan, E., Froneman, W., Thomalla, S. J., & Makhalanyane, T. (2023). Bacteria and archaea regulate particulate organic matter export in suspended and sinking marine particle fractions. <i>MSphere, 8(3)</i>, http://hdl.handle.net/10204/13156 |
en_ZA |
dc.identifier.chicagocitation |
Dithugoe, Choaro D, OKI Bezuidt, EL Cavan, WP Froneman, Sandy J Thomalla, and TP Makhalanyane "Bacteria and archaea regulate particulate organic matter export in suspended and sinking marine particle fractions." <i>MSphere, 8(3)</i> (2023) http://hdl.handle.net/10204/13156 |
en_ZA |
dc.identifier.vancouvercitation |
Dithugoe CD, Bezuidt O, Cavan E, Froneman W, Thomalla SJ, Makhalanyane T. Bacteria and archaea regulate particulate organic matter export in suspended and sinking marine particle fractions. MSphere, 8(3). 2023; http://hdl.handle.net/10204/13156. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Dithugoe, Choaro D
AU - Bezuidt, OKI
AU - Cavan, EL
AU - Froneman, WP
AU - Thomalla, Sandy J
AU - Makhalanyane, TP
AB - The biological carbon pump (BCP) in the Southern Ocean is driven by phytoplankton productivity and is a significant organic matter sink. However, the role of particle-attached (PA) and free-living (FL) prokaryotes (bacteria and archaea) and their diversity in influencing the efficiency of the BCP is still unclear. To investigate this, we analyzed the metagenomes linked to suspended and sinking marine particles from the Sub-Antarctic Southern Ocean Time Series (SOTS) by deploying a Marine Snow Catcher (MSC), obtaining suspended and sinking particulate material, determining organic carbon and nitrogen flux, and constructing metagenome-assembled genomes (MAGs). The suspended and sinking particle-pools were dominated by bacteria with the potential to degrade organic carbon. Bacterial communities associated with the sinking fraction had more genes related to the degradation of complex organic carbon than those in the suspended fraction. Archaea had the potential to drive nitrogen metabolism via nitrite and ammonia oxidation, altering organic nitrogen concentration. The data revealed several pathways for chemoautotrophy and the secretion of recalcitrant dissolved organic carbon (RDOC) from CO2, with bacteria and archaea potentially sequestering particulate organic matter (POM) via the production of RDOC. These findings provide insights into the diversity and function of prokaryotes in suspended and sinking particles and their role in organic carbon/nitrogen export in the Southern Ocean.
DA - 2023-04
DB - ResearchSpace
DP - CSIR
J1 - MSphere, 8(3)
KW - Carbon export
KW - Functional capacity
KW - Marine fractions
KW - Marine Snow Catcher
KW - Metagenomics
KW - Particulate organic matter
KW - Pokaryotes
KW - Southern Ocean
LK - https://researchspace.csir.co.za
PY - 2023
SM - 2379-5042
T1 - Bacteria and archaea regulate particulate organic matter export in suspended and sinking marine particle fractions
TI - Bacteria and archaea regulate particulate organic matter export in suspended and sinking marine particle fractions
UR - http://hdl.handle.net/10204/13156
ER -
|
en_ZA |
dc.identifier.worklist |
26995 |
en_US |
dc.identifier.worklist |
26847 |
en_US |