Eukaryotic virus composition can predict the efficiency of carbon export in the global ocean

Type : ACL
Nature : Production scientifique
Au bénéfice du Laboratoire : Oui
Statut de publication : Publié
Année de publication : 2021
Auteurs (17) : KANEKO Hiroto BLANC-MATHIEU Romain ENDO Hisashi CHAFFRON Samuel DELMONT Tom,o GAIA Morgan HENRY Nicolas HERNANDEZ-VELAZQUEZ Rodrigo CANH HAO Nguyen MAMITSUKA Hiroshi FORTERRE Patrick JAILLON Olivier DE VARGAS Colomban SULLIVAN Matthew,b SUTTLE Curtis,a GUIDI Lionel OGATA Hiroyuki
Revue scientifique : iScience
Volume : 24
Fascicule : 1
Pages :
DOI : 10.1016/j.isci.2020.102002
URL : -
Abstract : The biological carbon pump, in which carbon fixed by photosynthesis is exported to the deep ocean through sinking, is a major process in Earth's carbon cycle. The proportion of primary production that is exported is termed the carbon export efficiency (CEE). Based on in-lab or regional scale observations, viruses were previously suggested to affect the CEE (i.e., viral ``shunt'' and ``shuttle''). In this study, we tested associations between viral community composition and CEE measured at a global scale. A regression model based on relative abundance of viral marker genes explained 67\% of the variation in CEE. Viruses with high importance in the model were predicted to infect ecologically important hosts. These results are consistent with the view that the viral shunt and shuttle functions at a large scale and further imply that viruses likely act in this process in a way dependent on their hosts and ecosystem dynamics.
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Citation :
Kaneko H, Blanc-Mathieu R, Endo H, Chaffron S, Delmont TO, Gaia M, Henry N, Hernandez-Velazquez R, Canh Hao N, Mamitsuka H, Forterre P, Jaillon O, De Vargas C, Sullivan MB, Suttle CA, Guidi L, Ogata H (2021) Eukaryotic virus composition can predict the efficiency of carbon export in the global ocean. iScience 24 | doi: 10.1016/j.isci.2020.102002