Sökning: onr:"swepub:oai:DiVA.org:lnu-103502" > Viral-Mediated Micr...
Fältnamn | Indikatorer | Metadata |
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000 | 05452naa a2200529 4500 | |
001 | oai:DiVA.org:lnu-103502 | |
003 | SwePub | |
008 | 210521s2021 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-1035022 URI |
024 | 7 | a https://doi.org/10.3389/fmicb.2021.6358212 DOI |
040 | a (SwePub)lnu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Malits, Andreau Austral Ctr Sci Res CONICET, Argentina;Inst Ciencies Mar CSIC, Spain4 aut |
245 | 1 0 | a Viral-Mediated Microbe Mortality Modulated by Ocean Acidification and Eutrophication :b Consequences for the Carbon Fluxes Through the Microbial Food Web |
264 | c 2021-04-14 | |
264 | 1 | b Frontiers Media S.A.c 2021 |
338 | a print2 rdacarrier | |
520 | a 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 pCO(2) 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 pCO(2) 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 reduced under OA in the nutrient replete winter situation, but it was also observed that high nutrient loads lowered the negative effect of OA on viral lysis, suggesting an antagonistic interplay between these two major global ocean stressors in the Anthropocene. In summer, however, viral-mediated carbon release rates were lower and not affected by lowered pH. Eutrophication consistently stimulated viral production regardless of the season or initial conditions. Given the relevant role of viruses for marine carbon cycling and the biological carbon pump, these two anthropogenic stressors may modulate carbon fluxes through their effect on viruses at the base of the pelagic food web in a future global change scenario. | |
650 | 7 | a NATURVETENSKAPx Biologix Ekologi0 (SwePub)106112 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Ecology0 (SwePub)106112 hsv//eng |
650 | 7 | a NATURVETENSKAPx Biologix Mikrobiologi0 (SwePub)106062 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Biological Sciencesx Microbiology0 (SwePub)106062 hsv//eng |
653 | a ocean acidification | |
653 | a eutrophication | |
653 | a microbial food web | |
653 | a viral shunt | |
653 | a carbon fluxes | |
653 | a Mikrobiologi | |
653 | a Microbiology | |
700 | 1 | a Boras, Julia A.u Inst Ciencies Mar CSIC, Spain4 aut |
700 | 1 | a Balague, Vanessau Inst Ciencies Mar CSIC, Spain4 aut |
700 | 1 | a Calvo, Evau Inst Ciencies Mar CSIC, Spain4 aut |
700 | 1 | a Gasol, Josep M.u Inst Ciencies Mar CSIC, Spain;Edith Cowan Univ, Australia4 aut |
700 | 1 | a Marrase, Celiau Inst Ciencies Mar CSIC, Spain4 aut |
700 | 1 | a Pelejero, Carlesu Inst Ciencies Mar CSIC, Spain;Inst Catalana Recerca & Estudis Avancats ICREA, Spain4 aut |
700 | 1 | a Pinhassi, Jaroneu Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Vatten,Ctr Ecol & Evolut Microbial Model Syst EEMiS4 aut0 (Swepub:lnu)ypija |
700 | 1 | a Sala, Maria Montserratu Inst Ciencies Mar CSIC, Spain4 aut |
700 | 1 | a Vaque, Dolorsu Inst Ciencies Mar CSIC, Spain4 aut |
710 | 2 | a Austral Ctr Sci Res CONICET, Argentina;Inst Ciencies Mar CSIC, Spainb Inst Ciencies Mar CSIC, Spain4 org |
773 | 0 | t Frontiers in Microbiologyd : Frontiers Media S.A.g 12q 12x 1664-302X |
856 | 4 | u https://doi.org/10.3389/fmicb.2021.635821y Fulltext |
856 | 4 | u https://www.frontiersin.org/articles/10.3389/fmicb.2021.635821/pdf |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-103502 |
856 | 4 8 | u https://doi.org/10.3389/fmicb.2021.635821 |
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