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Título: | Viral infection switches the balance between bacterial and eukaryotic recyclers of organic matter during coccolithophore blooms |
Autor: | Vincent, Flora; Gralka, Matti; Schleyer, Guy; Schatz, Daniella; Cabrera-Brufau, Miguel CSIC ORCID ; Kuhlisch, Constanze; Sichert, Andreas; Vidal-Melgosa, Silvia; Mayers, Kyle; Barak-Gavish, Noa; Flores, J. Michel; Masdeu Navarro, Marta CSIC; Egge, Jorun Karin; Larsen, Aud; Hehemann, Jan-Hendrik; Marrasé, Cèlia CSIC ORCID ; Simó, Rafel CSIC ORCID ; Cordero, Otto X.; Vardi, Assaf | Fecha de publicación: | ene-2023 | Editor: | Nature Publishing Group | Citación: | Nature Communications 14: 510 (2023) | Resumen: | Algal blooms are hotspots of marine primary production and play central roles in microbial ecology and global elemental cycling. Upon demise of the bloom, organic carbon is partly respired and partly transferred to either higher trophic levels, bacterial biomass production or sinking. Viral infection can lead to bloom termination, but its impact on the fate of carbon remains largely unquantified. Here, we characterize the interplay between viral infection and the composition of a bloom-associated microbiome and consequently the evolving biogeochemical landscape, by conducting a large-scale mesocosm experiment where we monitor seven induced coccolithophore blooms. The blooms show different degrees of viral infection and reveal that only high levels of viral infection are followed by significant shifts in the composition of free-living bacterial and eukaryotic assemblages. Intriguingly, upon viral infection the biomass of eukaryotic heterotrophs (thraustochytrids) rivals that of bacteria as potential recyclers of organic matter. By combining modeling and quantification of active viral infection at a single-cell resolution, we estimate that viral infection causes a 2–4 fold increase in per-cell rates of extracellular carbon release in the form of acidic polysaccharides and particulate inorganic carbon, two major contributors to carbon sinking into the deep ocean. These results reveal the impact of viral infection on the fate of carbon through microbial recyclers of organic matter in large-scale coccolithophore blooms | Descripción: | 17 pages, 5 figures, supplementary information https://doi.org/10.1038/s41467-023-36049-3.-- Data availability: All data needed to evaluate the conclusions in the paper are present in the paper and clearly indicated in the Methods. Flow cytometry, nutrient, and temperature data are available in Dryad: https://doi.org/10.5061/dryad.q573n5tfr. Flowcam data is available on Ecotaxa under the project “Flowcam Composite Aquacosm_2018_VIMS-Ehux” (https://ecotaxa.obs-vlfr.fr/prj/2501). Sequencing data has been deposited under NCBI Bioproject PRJNA694552: 16S data is available under Biosample SAMN17576248 and 18S data is available under Biosample SAMN20295136. The PR2 database can be found on Zenodo: zenodo.org/record/5031733. Assembled sequences deposited on NCBI with accession numbers MZ562737, MZ562738, MZ562739, MZ562740, MZ562741. All data used to produce figures are available in the Source Data file. Source data are provided with this paper.-- Code availability: The code for all the analyses is available on Mendeley at https://doi.org/10.17632/k33xvnxhdb.1 (https://data.mendeley.com/datasets/k33xvnxhdb/1) | Versión del editor: | https://doi.org/10.1038/s41467-023-36049-3 | URI: | http://hdl.handle.net/10261/305420 | DOI: | 10.1038/s41467-023-36049-3 | E-ISSN: | 2041-1723 |
Aparece en las colecciones: | (ICM) Artículos |
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Vincent_et_al_2023.pdf | 2,43 MB | Adobe PDF | Visualizar/Abrir | |
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Vincent_et_al_2023_suppl_descr.pdf | 387,18 kB | Adobe PDF | Visualizar/Abrir | |
Vincent_et_al_2023_suppl_data.xlsx | 99,5 kB | Microsoft Excel XML | Visualizar/Abrir |
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