Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web
Anthropogenic carbon emissions are causing changes in seawater carbonate chemistry including a decline in the pH of the oceans. While its aftermath for calcifying microbes has been widely studied, the effect of ocean acidification (OA) on marine viruses and their microbial hosts is controversial, an...
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ftconicet:oai:ri.conicet.gov.ar:11336/149100 2023-10-09T21:54:51+02:00 Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web Malits, Andrea Boras, Julia A. Balagué, Vanessa Calvo, Eva Gasol, Josep M. Marrasé, Cèlia Pelejero, Carles Pinhassi, Jarone Montserrat Sala, Maria Vaqué, Dolors application/pdf http://hdl.handle.net/11336/149100 eng eng Frontiers Media info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fmicb.2021.635821/full info:eu-repo/semantics/altIdentifier/doi/10.3389/fmicb.2021.635821 http://hdl.handle.net/11336/149100 Malits, Andrea; Boras, Julia A.; Balagué, Vanessa; Calvo, Eva; Gasol, Josep M.; et al.; Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web; Frontiers Media; Frontiers in Microbiology; 12; 4-2021; 1-19 1664-302X CONICET Digital CONICET info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ CARBON FLUXES EUTROPHICATION MICROBIAL FOOD WEB OCEAN ACIDIFICATION VIRAL SHUNT https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.3389/fmicb.2021.635821 2023-09-24T18:45:47Z Anthropogenic carbon emissions are causing changes in seawater carbonate chemistry including a decline in the pH of the oceans. While its aftermath for calcifying microbes has been widely studied, the effect of ocean acidification (OA) on marine viruses and their microbial hosts is controversial, and even more in combination with another anthropogenic stressor, i.e., human-induced nutrient loads. In this study, two mesocosm acidification experiments with Mediterranean waters from different seasons revealed distinct effects of OA on viruses and viral-mediated prokaryotic mortality depending on the trophic state and the successional stage of the plankton community. In the winter bloom situation, low fluorescence viruses, the most abundant virus-like particle (VLP) subpopulation comprising mostly bacteriophages, were negatively affected by lowered pH with nutrient addition, while the bacterial host abundance was stimulated. High fluorescence viruses, containing cyanophages, were stimulated by OA regardless of the nutrient conditions, while cyanobacteria of the genus Synechococcus were negatively affected by OA. Moreover, the abundance of very high fluorescence viruses infecting small haptophytes tended to be lower under acidification while their putative hosts' abundance was enhanced, suggesting a direct and negative effect of OA on viral–host interactions. In the oligotrophic summer situation, we found a stimulating effect of OA on total viral abundance and the viral populations, suggesting a cascading effect of the elevated pCO2 stimulating autotrophic and heterotrophic production. In winter, viral lysis accounted for 30 ± 16% of the loss of bacterial standing stock per day (VMMBSS) under increased pCO2 compared to 53 ± 35% in the control treatments, without effects of nutrient additions while in summer, OA had no significant effects on VMMBSS (35 ± 20% and 38 ± 5% per day in the OA and control treatments, respectively). We found that phage production and resulting organic carbon release rates significantly ... Article in Journal/Newspaper Ocean acidification CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Frontiers in Microbiology 12 |
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CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
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English |
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CARBON FLUXES EUTROPHICATION MICROBIAL FOOD WEB OCEAN ACIDIFICATION VIRAL SHUNT https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
CARBON FLUXES EUTROPHICATION MICROBIAL FOOD WEB OCEAN ACIDIFICATION VIRAL SHUNT https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Malits, Andrea Boras, Julia A. Balagué, Vanessa Calvo, Eva Gasol, Josep M. Marrasé, Cèlia Pelejero, Carles Pinhassi, Jarone Montserrat Sala, Maria Vaqué, Dolors Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web |
topic_facet |
CARBON FLUXES EUTROPHICATION MICROBIAL FOOD WEB OCEAN ACIDIFICATION VIRAL SHUNT https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
Anthropogenic carbon emissions are causing changes in seawater carbonate chemistry including a decline in the pH of the oceans. While its aftermath for calcifying microbes has been widely studied, the effect of ocean acidification (OA) on marine viruses and their microbial hosts is controversial, and even more in combination with another anthropogenic stressor, i.e., human-induced nutrient loads. In this study, two mesocosm acidification experiments with Mediterranean waters from different seasons revealed distinct effects of OA on viruses and viral-mediated prokaryotic mortality depending on the trophic state and the successional stage of the plankton community. In the winter bloom situation, low fluorescence viruses, the most abundant virus-like particle (VLP) subpopulation comprising mostly bacteriophages, were negatively affected by lowered pH with nutrient addition, while the bacterial host abundance was stimulated. High fluorescence viruses, containing cyanophages, were stimulated by OA regardless of the nutrient conditions, while cyanobacteria of the genus Synechococcus were negatively affected by OA. Moreover, the abundance of very high fluorescence viruses infecting small haptophytes tended to be lower under acidification while their putative hosts' abundance was enhanced, suggesting a direct and negative effect of OA on viral–host interactions. In the oligotrophic summer situation, we found a stimulating effect of OA on total viral abundance and the viral populations, suggesting a cascading effect of the elevated pCO2 stimulating autotrophic and heterotrophic production. In winter, viral lysis accounted for 30 ± 16% of the loss of bacterial standing stock per day (VMMBSS) under increased pCO2 compared to 53 ± 35% in the control treatments, without effects of nutrient additions while in summer, OA had no significant effects on VMMBSS (35 ± 20% and 38 ± 5% per day in the OA and control treatments, respectively). We found that phage production and resulting organic carbon release rates significantly ... |
format |
Article in Journal/Newspaper |
author |
Malits, Andrea Boras, Julia A. Balagué, Vanessa Calvo, Eva Gasol, Josep M. Marrasé, Cèlia Pelejero, Carles Pinhassi, Jarone Montserrat Sala, Maria Vaqué, Dolors |
author_facet |
Malits, Andrea Boras, Julia A. Balagué, Vanessa Calvo, Eva Gasol, Josep M. Marrasé, Cèlia Pelejero, Carles Pinhassi, Jarone Montserrat Sala, Maria Vaqué, Dolors |
author_sort |
Malits, Andrea |
title |
Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web |
title_short |
Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web |
title_full |
Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web |
title_fullStr |
Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web |
title_full_unstemmed |
Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web |
title_sort |
viral-mediated microbe mortality modulated by ocean acidification and eutrophication: consequences for the carbon fluxes through the microbial food web |
publisher |
Frontiers Media |
url |
http://hdl.handle.net/11336/149100 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://www.frontiersin.org/articles/10.3389/fmicb.2021.635821/full info:eu-repo/semantics/altIdentifier/doi/10.3389/fmicb.2021.635821 http://hdl.handle.net/11336/149100 Malits, Andrea; Boras, Julia A.; Balagué, Vanessa; Calvo, Eva; Gasol, Josep M.; et al.; Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication: Consequences for the Carbon Fluxes Through the Microbial Food Web; Frontiers Media; Frontiers in Microbiology; 12; 4-2021; 1-19 1664-302X CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.3389/fmicb.2021.635821 |
container_title |
Frontiers in Microbiology |
container_volume |
12 |
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1779318562337325056 |