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Sökning: WFRF:(Gasol Josep M.) > (2020-2022) > Viral-Mediated Micr...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005452naa a2200529 4500
001oai:DiVA.org:lnu-103502
003SwePub
008210521s2021 | |||||||||||000 ||eng|
024a https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-1035022 URI
024a https://doi.org/10.3389/fmicb.2021.6358212 DOI
040 a (SwePub)lnu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
100a Malits, Andreau Austral Ctr Sci Res CONICET, Argentina;Inst Ciencies Mar CSIC, Spain4 aut
2451 0a 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 1b 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 7a NATURVETENSKAPx Biologix Ekologi0 (SwePub)106112 hsv//swe
650 7a NATURAL SCIENCESx Biological Sciencesx Ecology0 (SwePub)106112 hsv//eng
650 7a NATURVETENSKAPx Biologix Mikrobiologi0 (SwePub)106062 hsv//swe
650 7a 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
700a Boras, Julia A.u Inst Ciencies Mar CSIC, Spain4 aut
700a Balague, Vanessau Inst Ciencies Mar CSIC, Spain4 aut
700a Calvo, Evau Inst Ciencies Mar CSIC, Spain4 aut
700a Gasol, Josep M.u Inst Ciencies Mar CSIC, Spain;Edith Cowan Univ, Australia4 aut
700a Marrase, Celiau Inst Ciencies Mar CSIC, Spain4 aut
700a Pelejero, Carlesu Inst Ciencies Mar CSIC, Spain;Inst Catalana Recerca & Estudis Avancats ICREA, Spain4 aut
700a Pinhassi, Jaroneu Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Vatten,Ctr Ecol & Evolut Microbial Model Syst EEMiS4 aut0 (Swepub:lnu)ypija
700a Sala, Maria Montserratu Inst Ciencies Mar CSIC, Spain4 aut
700a Vaque, Dolorsu Inst Ciencies Mar CSIC, Spain4 aut
710a Austral Ctr Sci Res CONICET, Argentina;Inst Ciencies Mar CSIC, Spainb Inst Ciencies Mar CSIC, Spain4 org
773t Frontiers in Microbiologyd : Frontiers Media S.A.g 12q 12x 1664-302X
856u https://doi.org/10.3389/fmicb.2021.635821y Fulltext
856u https://www.frontiersin.org/articles/10.3389/fmicb.2021.635821/pdf
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-103502
8564 8u https://doi.org/10.3389/fmicb.2021.635821

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