square

Patterns and ecological drivers of ocean viral communities

05/22/2015
Science
348 (6237) pp. 1261498

Type

Article dans des revues

Authors

Brum Jennifer R
Ignacio-Espinosa J. Cesar
Roux Simon
Doulcier Guilhem
Acinas Silvia G.
Alberti Adriana
Chaffron Samuel
Cruaud Corinne
De Vargas Colomban
Gasol Josep M
Gorsky Gaby
Gregory Ann C
Guidi Lionel
Hingamp Pascal
Iudicone Daniele
Not Fabrice
Ogata Hiroyuki
Pesant Stéphane
Poulos Bonnie T
Schwenck Sarah M
Speich Sabrina
Dimier Céline
Kandels-Lewis Stefanie
Picheral Marc
Searson Sarah
Tara Oceans Coordinators
Bork Peer
Bowler Chris
Sunagawa Shinichi
Wincker Patrick
Karsenti Eric
Sullivan Matthew B

Viruses influence ecosystems by modulating microbial population size, diversity, metabolic outputs, and gene flow. Here, we use quantitative double-stranded DNA (dsDNA) viral-fraction metagenomes (viromes) and whole viral community morphological data sets from 43 Tara Oceans expedition samples to assess viral community patterns and structure in the upper ocean. Protein cluster cataloging defined pelagic upper-ocean viral community pan and core gene sets and suggested that this sequence space is well-sampled. Analyses of viral protein clusters, populations, and morphology revealed biogeographic patterns whereby viral communities were passively transported on oceanic currents and locally structured by environmental conditions that affect host community structure. Together, these investigations establish a global ocean dsDNA viromic data set with analyses supporting the seed-bank hypothesis to explain how oceanic viral communities maintain high local diversity.