Major effect of hydrogen peroxide on bacterioplankton metabolism in the Northeast Atlantic.
Reactive oxygen species such as hydrogen peroxide have the potential to alter metabolic rates of marine prokaryotes, ultimately impacting the cycling and bioavailability of nutrients and carbon. We studied the influence of H2O2 on prokaryotic heterotrophic production (PHP) and extracellular enzymati...
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ftdoajarticles:oai:doaj.org/article:1077f5ad8e084ba5a7f7019c7dd86b74 2023-05-15T17:41:26+02:00 Major effect of hydrogen peroxide on bacterioplankton metabolism in the Northeast Atlantic. Federico Baltar Thomas Reinthaler Gerhard J Herndl Jarone Pinhassi 2013-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0061051 https://doaj.org/article/1077f5ad8e084ba5a7f7019c7dd86b74 EN eng Public Library of Science (PLoS) https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23593386/?tool=EBI https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0061051 https://doaj.org/article/1077f5ad8e084ba5a7f7019c7dd86b74 PLoS ONE, Vol 8, Iss 4, p e61051 (2013) Medicine R Science Q article 2013 ftdoajarticles https://doi.org/10.1371/journal.pone.0061051 2022-12-31T14:45:35Z Reactive oxygen species such as hydrogen peroxide have the potential to alter metabolic rates of marine prokaryotes, ultimately impacting the cycling and bioavailability of nutrients and carbon. We studied the influence of H2O2 on prokaryotic heterotrophic production (PHP) and extracellular enzymatic activities (i.e., β-glucosidase [BGase], leucine aminopeptidase [LAPase] and alkaline phosphatase [APase]) in the subtropical Atlantic. With increasing concentrations of H2O2 in the range of 100-1000 nM, LAPase, APase and BGase were reduced by up to 11, 23 and 62%, respectively, in the different water layers. Incubation experiments with subsurface waters revealed a strong inhibition of all measured enzymatic activities upon H2O2 amendments in the range of 10-500 nM after 24 h. H2O2 additions also reduced prokaryotic heterotrophic production by 36-100% compared to the rapid increases in production rates occurring in the unamended controls. Our results indicate that oxidative stress caused by H2O2 affects prokaryotic growth and hydrolysis of specific components of the organic matter pool. Thus, we suggest that oxidative stress may have important consequences on marine carbon and energy fluxes. Article in Journal/Newspaper Northeast Atlantic Directory of Open Access Journals: DOAJ Articles PLoS ONE 8 4 e61051 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Medicine R Science Q |
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Medicine R Science Q Federico Baltar Thomas Reinthaler Gerhard J Herndl Jarone Pinhassi Major effect of hydrogen peroxide on bacterioplankton metabolism in the Northeast Atlantic. |
topic_facet |
Medicine R Science Q |
description |
Reactive oxygen species such as hydrogen peroxide have the potential to alter metabolic rates of marine prokaryotes, ultimately impacting the cycling and bioavailability of nutrients and carbon. We studied the influence of H2O2 on prokaryotic heterotrophic production (PHP) and extracellular enzymatic activities (i.e., β-glucosidase [BGase], leucine aminopeptidase [LAPase] and alkaline phosphatase [APase]) in the subtropical Atlantic. With increasing concentrations of H2O2 in the range of 100-1000 nM, LAPase, APase and BGase were reduced by up to 11, 23 and 62%, respectively, in the different water layers. Incubation experiments with subsurface waters revealed a strong inhibition of all measured enzymatic activities upon H2O2 amendments in the range of 10-500 nM after 24 h. H2O2 additions also reduced prokaryotic heterotrophic production by 36-100% compared to the rapid increases in production rates occurring in the unamended controls. Our results indicate that oxidative stress caused by H2O2 affects prokaryotic growth and hydrolysis of specific components of the organic matter pool. Thus, we suggest that oxidative stress may have important consequences on marine carbon and energy fluxes. |
format |
Article in Journal/Newspaper |
author |
Federico Baltar Thomas Reinthaler Gerhard J Herndl Jarone Pinhassi |
author_facet |
Federico Baltar Thomas Reinthaler Gerhard J Herndl Jarone Pinhassi |
author_sort |
Federico Baltar |
title |
Major effect of hydrogen peroxide on bacterioplankton metabolism in the Northeast Atlantic. |
title_short |
Major effect of hydrogen peroxide on bacterioplankton metabolism in the Northeast Atlantic. |
title_full |
Major effect of hydrogen peroxide on bacterioplankton metabolism in the Northeast Atlantic. |
title_fullStr |
Major effect of hydrogen peroxide on bacterioplankton metabolism in the Northeast Atlantic. |
title_full_unstemmed |
Major effect of hydrogen peroxide on bacterioplankton metabolism in the Northeast Atlantic. |
title_sort |
major effect of hydrogen peroxide on bacterioplankton metabolism in the northeast atlantic. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2013 |
url |
https://doi.org/10.1371/journal.pone.0061051 https://doaj.org/article/1077f5ad8e084ba5a7f7019c7dd86b74 |
genre |
Northeast Atlantic |
genre_facet |
Northeast Atlantic |
op_source |
PLoS ONE, Vol 8, Iss 4, p e61051 (2013) |
op_relation |
https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23593386/?tool=EBI https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0061051 https://doaj.org/article/1077f5ad8e084ba5a7f7019c7dd86b74 |
op_doi |
https://doi.org/10.1371/journal.pone.0061051 |
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PLoS ONE |
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8 |
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4 |
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e61051 |
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1766142978553806848 |