Response of two marine bacterial isolates to high CO2 concentration
Experimental results related to the effects of ocean acidification on planktonic marine microbes are still rather inconsistent and occasionally contradictory. Moreover, laboratory or field experiments that address the effects of changes in CO concentrations on heterotrophic microbes are very scarce,...
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Online Access: | https://ueaeprints.uea.ac.uk/id/eprint/48155/ https://doi.org/10.3354/meps09644 |
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ftuniveastangl:oai:ueaeprints.uea.ac.uk:48155 2023-05-15T17:50:10+02:00 Response of two marine bacterial isolates to high CO2 concentration Teira, Eva Fernández, Ana Álvarez-Salgado, Xosé Antón García-Martín, Enma Elena Serret, Pablo Sobrino, Cristina 2012-05-07 https://ueaeprints.uea.ac.uk/id/eprint/48155/ https://doi.org/10.3354/meps09644 unknown Teira, Eva, Fernández, Ana, Álvarez-Salgado, Xosé Antón, García-Martín, Enma Elena, Serret, Pablo and Sobrino, Cristina (2012) Response of two marine bacterial isolates to high CO2 concentration. Marine Ecology Progress Series, 453. pp. 27-36. ISSN 0171-8630 doi:10.3354/meps09644 Article PeerReviewed 2012 ftuniveastangl https://doi.org/10.3354/meps09644 2023-01-30T21:38:16Z Experimental results related to the effects of ocean acidification on planktonic marine microbes are still rather inconsistent and occasionally contradictory. Moreover, laboratory or field experiments that address the effects of changes in CO concentrations on heterotrophic microbes are very scarce, despite the major role of these organisms in the marine carbon cycle. We tested the direct effect of an elevated CO concentration (1000 ppmv) on the biomass and metabolic rates (leucine incorporation, CO fixation and respiration) of 2 isolates belonging to 2 relevant marine bacterial families, Rhodobacteraceae (strain MED165) and Flavobacteriaceae (strain MED217). Our results demonstrate that, contrary to some expectations, high pCO did not negatively affect bacterial growth but increased growth efficiency in the case of MED217. The elevated partial pressure of CO (pCO) caused, in both cases, higher rates of CO fixation in the dissolved fraction and, in the case of MED217, lower respiration rates. Both responses would tend to increase the pH of seawater acting as a negative feedback between elevated atmospheric CO concentrations and ocean acidification. Article in Journal/Newspaper Ocean acidification University of East Anglia: UEA Digital Repository Marine Ecology Progress Series 453 27 36 |
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University of East Anglia: UEA Digital Repository |
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description |
Experimental results related to the effects of ocean acidification on planktonic marine microbes are still rather inconsistent and occasionally contradictory. Moreover, laboratory or field experiments that address the effects of changes in CO concentrations on heterotrophic microbes are very scarce, despite the major role of these organisms in the marine carbon cycle. We tested the direct effect of an elevated CO concentration (1000 ppmv) on the biomass and metabolic rates (leucine incorporation, CO fixation and respiration) of 2 isolates belonging to 2 relevant marine bacterial families, Rhodobacteraceae (strain MED165) and Flavobacteriaceae (strain MED217). Our results demonstrate that, contrary to some expectations, high pCO did not negatively affect bacterial growth but increased growth efficiency in the case of MED217. The elevated partial pressure of CO (pCO) caused, in both cases, higher rates of CO fixation in the dissolved fraction and, in the case of MED217, lower respiration rates. Both responses would tend to increase the pH of seawater acting as a negative feedback between elevated atmospheric CO concentrations and ocean acidification. |
format |
Article in Journal/Newspaper |
author |
Teira, Eva Fernández, Ana Álvarez-Salgado, Xosé Antón García-Martín, Enma Elena Serret, Pablo Sobrino, Cristina |
spellingShingle |
Teira, Eva Fernández, Ana Álvarez-Salgado, Xosé Antón García-Martín, Enma Elena Serret, Pablo Sobrino, Cristina Response of two marine bacterial isolates to high CO2 concentration |
author_facet |
Teira, Eva Fernández, Ana Álvarez-Salgado, Xosé Antón García-Martín, Enma Elena Serret, Pablo Sobrino, Cristina |
author_sort |
Teira, Eva |
title |
Response of two marine bacterial isolates to high CO2 concentration |
title_short |
Response of two marine bacterial isolates to high CO2 concentration |
title_full |
Response of two marine bacterial isolates to high CO2 concentration |
title_fullStr |
Response of two marine bacterial isolates to high CO2 concentration |
title_full_unstemmed |
Response of two marine bacterial isolates to high CO2 concentration |
title_sort |
response of two marine bacterial isolates to high co2 concentration |
publishDate |
2012 |
url |
https://ueaeprints.uea.ac.uk/id/eprint/48155/ https://doi.org/10.3354/meps09644 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
Teira, Eva, Fernández, Ana, Álvarez-Salgado, Xosé Antón, García-Martín, Enma Elena, Serret, Pablo and Sobrino, Cristina (2012) Response of two marine bacterial isolates to high CO2 concentration. Marine Ecology Progress Series, 453. pp. 27-36. ISSN 0171-8630 doi:10.3354/meps09644 |
op_doi |
https://doi.org/10.3354/meps09644 |
container_title |
Marine Ecology Progress Series |
container_volume |
453 |
container_start_page |
27 |
op_container_end_page |
36 |
_version_ |
1766156814610595840 |