Acidification increases microbial polysaccharide degradation in the ocean
© The Authors, 2010. This article is distributed under the terms of the Creative Commons Attribution 3.0 License. The definitive version was published in Biogeosciences 7 (2010): 1615–1624, doi:10.5194/bg-7-1615-2010. With the accumulation of anthropogenic carbon dioxide (CO2), a proceeding decline...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications on behalf of the European Geosciences Union
2010
|
Subjects: | |
Online Access: | https://hdl.handle.net/1912/3683 |
id |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3683 |
---|---|
record_format |
openpolar |
spelling |
ftwhoas:oai:darchive.mblwhoilibrary.org:1912/3683 2023-05-15T17:49:55+02:00 Acidification increases microbial polysaccharide degradation in the ocean Piontek, J. Lunau, M. Handel, N. Borchard, C. Wurst, M. Engel, A. 2010-05-19 application/pdf https://hdl.handle.net/1912/3683 en eng Copernicus Publications on behalf of the European Geosciences Union https://doi.org/10.5194/bg-7-1615-2010 Biogeosciences 7 (2010): 1615–1624 https://hdl.handle.net/1912/3683 doi:10.5194/bg-7-1615-2010 Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0/ CC-BY Biogeosciences 7 (2010): 1615–1624 doi:10.5194/bg-7-1615-2010 Article 2010 ftwhoas https://doi.org/10.5194/bg-7-1615-2010 2022-05-28T22:58:02Z © The Authors, 2010. This article is distributed under the terms of the Creative Commons Attribution 3.0 License. The definitive version was published in Biogeosciences 7 (2010): 1615–1624, doi:10.5194/bg-7-1615-2010. With the accumulation of anthropogenic carbon dioxide (CO2), a proceeding decline in seawater pH has been induced that is referred to as ocean acidification. The ocean's capacity for CO2 storage is strongly affected by biological processes, whose feedback potential is difficult to evaluate. The main source of CO2 in the ocean is the decomposition and subsequent respiration of organic molecules by heterotrophic bacteria. However, very little is known about potential effects of ocean acidification on bacterial degradation activity. This study reveals that the degradation of polysaccharides, a major component of marine organic matter, by bacterial extracellular enzymes was significantly accelerated during experimental simulation of ocean acidification. Results were obtained from pH perturbation experiments, where rates of extracellular α- and β-glucosidase were measured and the loss of neutral and acidic sugars from phytoplankton-derived polysaccharides was determined. Our study suggests that a faster bacterial turnover of polysaccharides at lowered ocean pH has the potential to reduce carbon export and to enhance the respiratory CO2 production in the future ocean. This study was supported by the Helmholtz Association (HZ-NG-102) and the Belgian Science Policy (SD/CS/03). Article in Journal/Newspaper Ocean acidification Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) Biogeosciences 7 5 1615 1624 |
institution |
Open Polar |
collection |
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server) |
op_collection_id |
ftwhoas |
language |
English |
description |
© The Authors, 2010. This article is distributed under the terms of the Creative Commons Attribution 3.0 License. The definitive version was published in Biogeosciences 7 (2010): 1615–1624, doi:10.5194/bg-7-1615-2010. With the accumulation of anthropogenic carbon dioxide (CO2), a proceeding decline in seawater pH has been induced that is referred to as ocean acidification. The ocean's capacity for CO2 storage is strongly affected by biological processes, whose feedback potential is difficult to evaluate. The main source of CO2 in the ocean is the decomposition and subsequent respiration of organic molecules by heterotrophic bacteria. However, very little is known about potential effects of ocean acidification on bacterial degradation activity. This study reveals that the degradation of polysaccharides, a major component of marine organic matter, by bacterial extracellular enzymes was significantly accelerated during experimental simulation of ocean acidification. Results were obtained from pH perturbation experiments, where rates of extracellular α- and β-glucosidase were measured and the loss of neutral and acidic sugars from phytoplankton-derived polysaccharides was determined. Our study suggests that a faster bacterial turnover of polysaccharides at lowered ocean pH has the potential to reduce carbon export and to enhance the respiratory CO2 production in the future ocean. This study was supported by the Helmholtz Association (HZ-NG-102) and the Belgian Science Policy (SD/CS/03). |
format |
Article in Journal/Newspaper |
author |
Piontek, J. Lunau, M. Handel, N. Borchard, C. Wurst, M. Engel, A. |
spellingShingle |
Piontek, J. Lunau, M. Handel, N. Borchard, C. Wurst, M. Engel, A. Acidification increases microbial polysaccharide degradation in the ocean |
author_facet |
Piontek, J. Lunau, M. Handel, N. Borchard, C. Wurst, M. Engel, A. |
author_sort |
Piontek, J. |
title |
Acidification increases microbial polysaccharide degradation in the ocean |
title_short |
Acidification increases microbial polysaccharide degradation in the ocean |
title_full |
Acidification increases microbial polysaccharide degradation in the ocean |
title_fullStr |
Acidification increases microbial polysaccharide degradation in the ocean |
title_full_unstemmed |
Acidification increases microbial polysaccharide degradation in the ocean |
title_sort |
acidification increases microbial polysaccharide degradation in the ocean |
publisher |
Copernicus Publications on behalf of the European Geosciences Union |
publishDate |
2010 |
url |
https://hdl.handle.net/1912/3683 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Biogeosciences 7 (2010): 1615–1624 doi:10.5194/bg-7-1615-2010 |
op_relation |
https://doi.org/10.5194/bg-7-1615-2010 Biogeosciences 7 (2010): 1615–1624 https://hdl.handle.net/1912/3683 doi:10.5194/bg-7-1615-2010 |
op_rights |
Attribution 3.0 Unported http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-7-1615-2010 |
container_title |
Biogeosciences |
container_volume |
7 |
container_issue |
5 |
container_start_page |
1615 |
op_container_end_page |
1624 |
_version_ |
1766156432100556800 |