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Article Dans Une Revue iScience Année : 2021

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

Hiroto Kaneko
  • Fonction : Auteur
Romain Blanc-Mathieu
Hisashi Endo
Samuel Chaffron
Nicolas Henry
Rodrigo Hernández-Velázquez
  • Fonction : Auteur
Canh Hao Nguyen
  • Fonction : Auteur
Hiroshi Mamitsuka
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Patrick Forterre
  • Fonction : Auteur
Colomban de Vargas
Matthew B. Sullivan
Curtis A. Suttle
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Lionel Guidi
Hiroyuki Ogata
  • Fonction : Auteur correspondant
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Résumé

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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Dates et versions

hal-03097258 , version 2 (05-01-2021)
hal-03097258 , version 3 (10-11-2021)
hal-03097258 , version 1 (03-02-2023)

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Hiroto Kaneko, Romain Blanc-Mathieu, Hisashi Endo, Samuel Chaffron, Tom Delmont, et al.. Eukaryotic virus composition can predict the efficiency of carbon export in the global ocean. iScience, 2021, 24 (1), pp.102002. ⟨10.1016/j.isci.2020.102002⟩. ⟨hal-03097258v3⟩
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