Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean
Thousands of man-made synthetic chemicals are released to oceans and compose the anthropogenic dissolved organic carbon (ADOC). Little is known about the effects of this chronic pollution on marine microbiome activities. In this study, we measured the pollution level at three sites in the Northeast Subarctic Pacific Ocean (NESAP) and investigated how mixtures of three model families of ADOC at different environmentally relevant concentrations affected naturally occurring marine bacterioplankton communities' structure and metabolic functioning. The offshore northernmost site (North) had the lowest concentrations of hydrocarbons, as well as organophosphate ester plasticizers, contrasting with the two other continental shelf sites, the southern coastal site (South) being the most contaminated. At North, ADOC stimulated bacterial growth and promoted an increase in the contribution of some Gammaproteobacteria groups (e.g. Alteromonadales) to the 16 rRNA pool. These groups are described as fast responders after oil spills. In contrast, minor changes in South microbiome activities were observed. Gene expression profiles at Central showed the coexistence of ADOC degradation and stress-response strategies to cope with ADOC toxicities. These results show that marine microbial communities at three distinct domains in NESAP are influenced by background concentrations of ADOC, expanding previous assessments for polar and temperate waters.
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Wiley-Blackwell
2021-06
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Subjects: | Bacterias, Organic pollutants, Pacific Ocean, |
Online Access: | http://hdl.handle.net/10261/247305 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100002809 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 |
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dig-idaea-es-10261-2473052021-09-24T07:17:25Z Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean Martínez-Varela, Alicia Cerro-Gálvez, Elena Auladell Martin, Adria Sharma, Shalabh Moran, Mary Ann Kiene, Ronald P. Piña, Benjamín Dachs, Jordi Vila-Costa, Maria Ministerio de Ciencia e Innovación (España) Agencia Estatal de Investigación (España) Generalitat de Catalunya Ministerio de Economía y Competitividad (España) Bacterias Organic pollutants Pacific Ocean Thousands of man-made synthetic chemicals are released to oceans and compose the anthropogenic dissolved organic carbon (ADOC). Little is known about the effects of this chronic pollution on marine microbiome activities. In this study, we measured the pollution level at three sites in the Northeast Subarctic Pacific Ocean (NESAP) and investigated how mixtures of three model families of ADOC at different environmentally relevant concentrations affected naturally occurring marine bacterioplankton communities' structure and metabolic functioning. The offshore northernmost site (North) had the lowest concentrations of hydrocarbons, as well as organophosphate ester plasticizers, contrasting with the two other continental shelf sites, the southern coastal site (South) being the most contaminated. At North, ADOC stimulated bacterial growth and promoted an increase in the contribution of some Gammaproteobacteria groups (e.g. Alteromonadales) to the 16 rRNA pool. These groups are described as fast responders after oil spills. In contrast, minor changes in South microbiome activities were observed. Gene expression profiles at Central showed the coexistence of ADOC degradation and stress-response strategies to cope with ADOC toxicities. These results show that marine microbial communities at three distinct domains in NESAP are influenced by background concentrations of ADOC, expanding previous assessments for polar and temperate waters. This publication is dedicated to the memory of our missed friend, mentor and colleague, Prof. Ronald P. Kiene. The authors thank the Capitan and crew of the R/V Oceanus. This work was funded by the Spanish MEIC through projects ISOMICS (CTM2015-65691-R) and SENTINEL (CTM2015-70535-P). The authors sincerely thank J.M. Gasol for support with flow cytometry counts and I. Forn for microscopy counts. The research group of Global Change and Genomic Biogeochemistry is supported by the Catalan Government (2017SGR800). IDAEA-CSIC is a Centre of Excellence Severo Ochoa (Spanish Ministry of Science and Innovation, Project CEX2018-000794-S). With the funding support of the ‘Severo Ochoa Centre of Excellence’ accreditation (CEX2019-000928-S), of the Spanish Research Agency (AEI). Peer reviewed 2021-08-05T08:06:13Z 2021-08-05T08:06:13Z 2021-06 artículo http://purl.org/coar/resource_type/c_6501 Environmental Microbiology (2021) Environmental Microbiology 23(8): 4532-4546 (2021) CEX2019-000928-S CEX2018-000794-S http://hdl.handle.net/10261/247305 10.1111/1462-2920.15646 1462-2920 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100002809 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ CTM2015-65691-R info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ CTM2015-70535-P Publisher's version https://doi.org/10.1111/1462-2920.15646 Sí open Wiley-Blackwell |
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Bacterias Organic pollutants Pacific Ocean Bacterias Organic pollutants Pacific Ocean |
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Bacterias Organic pollutants Pacific Ocean Bacterias Organic pollutants Pacific Ocean Martínez-Varela, Alicia Cerro-Gálvez, Elena Auladell Martin, Adria Sharma, Shalabh Moran, Mary Ann Kiene, Ronald P. Piña, Benjamín Dachs, Jordi Vila-Costa, Maria Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean |
description |
Thousands of man-made synthetic chemicals are released to oceans and compose the anthropogenic dissolved organic carbon (ADOC). Little is known about the effects of this chronic pollution on marine microbiome activities. In this study, we measured the pollution level at three sites in the Northeast Subarctic Pacific Ocean (NESAP) and investigated how mixtures of three model families of ADOC at different environmentally relevant concentrations affected naturally occurring marine bacterioplankton communities' structure and metabolic functioning. The offshore northernmost site (North) had the lowest concentrations of hydrocarbons, as well as organophosphate ester plasticizers, contrasting with the two other continental shelf sites, the southern coastal site (South) being the most contaminated. At North, ADOC stimulated bacterial growth and promoted an increase in the contribution of some Gammaproteobacteria groups (e.g. Alteromonadales) to the 16 rRNA pool. These groups are described as fast responders after oil spills. In contrast, minor changes in South microbiome activities were observed. Gene expression profiles at Central showed the coexistence of ADOC degradation and stress-response strategies to cope with ADOC toxicities. These results show that marine microbial communities at three distinct domains in NESAP are influenced by background concentrations of ADOC, expanding previous assessments for polar and temperate waters. |
author2 |
Ministerio de Ciencia e Innovación (España) |
author_facet |
Ministerio de Ciencia e Innovación (España) Martínez-Varela, Alicia Cerro-Gálvez, Elena Auladell Martin, Adria Sharma, Shalabh Moran, Mary Ann Kiene, Ronald P. Piña, Benjamín Dachs, Jordi Vila-Costa, Maria |
format |
artículo |
topic_facet |
Bacterias Organic pollutants Pacific Ocean |
author |
Martínez-Varela, Alicia Cerro-Gálvez, Elena Auladell Martin, Adria Sharma, Shalabh Moran, Mary Ann Kiene, Ronald P. Piña, Benjamín Dachs, Jordi Vila-Costa, Maria |
author_sort |
Martínez-Varela, Alicia |
title |
Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean |
title_short |
Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean |
title_full |
Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean |
title_fullStr |
Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean |
title_full_unstemmed |
Bacterial responses to background organic pollutants in the northeast subarctic Pacific Ocean |
title_sort |
bacterial responses to background organic pollutants in the northeast subarctic pacific ocean |
publisher |
Wiley-Blackwell |
publishDate |
2021-06 |
url |
http://hdl.handle.net/10261/247305 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100002809 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011033 |
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