Unveiling the role and life strategies of viruses from the surface to the dark ocean.

Autor: Lara E; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain.; Institute of Marine Sciences, National Research Council (CNR-ISMAR), Castello 2737/F Arsenale-Tesa 104, 30122 Venezia, Italy., Vaqué D; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Sà EL; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Boras JA; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Gomes A; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Borrull E; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Díez-Vives C; School of Biotechnology and Biomolecular Sciences, Centre for Marine Bio-Innovation, University of New South Wales, Sydney, New South Wales 2052, Australia., Teira E; Departamento de Ecología y Biología Animal, Universidad de Vigo, University of Vigo, 36310 Vigo, Spain., Pernice MC; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Garcia FC; Centro Oceanográfico de Gijón/Xixón, Instituto Español de Oceanografía, Avenida Príncipe de Asturias, 70, 33212 Gijón/Xixón, Spain., Forn I; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Castillo YM; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Peiró A; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Salazar G; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Morán XAG; Red Sea Research Center, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia., Massana R; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Catalá TS; Instituto de Investigaciones Marinas, CSIC, Eduardo Cabello, 6, 36208 Vigo, Spain.; Departamento de Ecología and Instituto del Agua, Universidad de Granada, Avenida del Hospicio, S/N, 18010 Granada, Spain., Luna GM; CNR-ISMAR, Largo Fiera della Pesca, 60125 Ancona, Italy., Agustí S; Red Sea Research Center, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia., Estrada M; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Gasol JM; Departament de Biologia Marina i Oceanografia, Institut de Ciències del Mar, Consell Superior d'Investigacions Científiques (ICM-CSIC), Passeig Marítim de la Barceloneta 37-49, 08003 Barcelona, Catalunya, Spain., Duarte CM; Red Sea Research Center, Division of Biological and Environmental Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
Jazyk: angličtina
Zdroj: Science advances [Sci Adv] 2017 Sep 06; Vol. 3 (9), pp. e1602565. Date of Electronic Publication: 2017 Sep 06 (Print Publication: 2017).
DOI: 10.1126/sciadv.1602565
Abstrakt: Viruses are a key component of marine ecosystems, but the assessment of their global role in regulating microbial communities and the flux of carbon is precluded by a paucity of data, particularly in the deep ocean. We assessed patterns in viral abundance and production and the role of viral lysis as a driver of prokaryote mortality, from surface to bathypelagic layers, across the tropical and subtropical oceans. Viral abundance showed significant differences between oceans in the epipelagic and mesopelagic, but not in the bathypelagic, and decreased with depth, with an average power-law scaling exponent of -1.03 km -1 from an average of 7.76 × 10 6 viruses ml -1 in the epipelagic to 0.62 × 10 6 viruses ml -1 in the bathypelagic layer with an average integrated (0 to 4000 m) viral stock of about 0.004 to 0.044 g C m -2 , half of which is found below 775 m. Lysogenic viral production was higher than lytic viral production in surface waters, whereas the opposite was found in the bathypelagic, where prokaryotic mortality due to viruses was estimated to be 60 times higher than grazing. Free viruses had turnover times of 0.1 days in the bathypelagic, revealing that viruses in the bathypelagic are highly dynamic. On the basis of the rates of lysed prokaryotic cells, we estimated that viruses release 145 Gt C year -1 in the global tropical and subtropical oceans. The active viral processes reported here demonstrate the importance of viruses in the production of dissolved organic carbon in the dark ocean, a major pathway in carbon cycling.
Databáze: MEDLINE
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