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Viral Infection Switches the Balance Between Bacterial and Eukaryotic Recyclers of Organic Matter During Coccolithophore Blooms by Flora Vincent; Matti Gralka; Guy Schleyer; Daniella Schatz; Miguel Cabrera-Brufau; Constanze Kuhlisch; Andreas Sichert; Silvia Vidal-Melgosa; Kyle Mayers; Noa Barak-Gavish; J. Michel Flores; Marta Masdeu-Navarro; Jorun Karin Egge; Aud Larsen; Jan-Hendrik Hehemann; Celia Marrasé; Rafel Simó; Otto X. Cordero; Assaf Vardi is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Viral Infection Switches the Balance Between Bacterial and Eukaryotic Recyclers of Organic Matter During Coccolithophore Blooms about?

## Abstract 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 fol

Who reads Viral Infection Switches the Balance Between Bacterial and Eukaryotic Recyclers of Organic Matter During Coccolithophore Blooms?

Author

Flora Vincent; Matti Gralka; Guy Schleyer; Daniella Schatz; Miguel Cabrera-Brufau; Constanze Kuhlisch; Andreas Sichert; Silvia Vidal-Melgosa; Kyle Mayers; Noa Barak-Gavish; J. Michel Flores; Marta Masdeu-Navarro; Jorun Karin Egge; Aud Larsen; Jan-Hendrik Hehemann; Celia Marrasé; Rafel Simó; Otto X. Cordero; Assaf Vardi

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)