Diversity and ecological footprint of Global Ocean RNA viruses

Type : ACL
Nature : Production scientifique
Au bénéfice du Laboratoire : Oui
Statut de publication : Publié
Année de publication : 2022
Auteurs (27) : DOMINGUEZ-HUERTA Guillermo ZAYED Ahmed WAINAINA James,m GUO Jiarong TIAN Funing PRATAMA Akbar,adjie BOLDUC Ben MOHSSEN Mohamed ZABLOCKI Olivier PELLETIER Eric DELAGE Erwan ALBERTI Adriana AURY Jean-marc CARRADEC Quentin DE SILVA Corinne LABADIE Karine POULAIN Julie BOWLER Chris EVEILLARD Damien GUIDI Lionel KARSENTI Eric KUHN Jens,h OGATA Hiroyuki WINCKER Patrick CULLEY Alexander CHAFFRON Samuel SULLIVAN Matthew,b
Revue scientifique : Science
Volume : 376
Fascicule : 6598
Pages : 1202-1208
DOI : 10.1126/science.abn6358
URL : https://www.science.org/doi/abs/10.1126/science.abn6358
Abstract : DNA viruses are increasingly recognized as influencing marine microbes and microbe-mediated biogeochemical cycling. However, little is known about global marine RNA virus diversity, ecology, and ecosystem roles. In this study, we uncover patterns and predictors of marine RNA virus community- and “species”-level diversity and contextualize their ecological impacts from pole to pole. Our analyses revealed four ecological zones, latitudinal and depth diversity patterns, and environmental correlates for RNA viruses. Our findings only partially parallel those of cosampled plankton and show unexpectedly high polar ecological interactions. The influence of RNA viruses on ecosystems appears to be large, as predicted hosts are ecologically important. Moreover, the occurrence of auxiliary metabolic genes indicates that RNA viruses cause reprogramming of diverse host metabolisms, including photosynthesis and carbon cycling, and that RNA virus abundances predict ocean carbon export. Viruses are suspected to be lynchpins in ecosystem function, but so far we can only guess at their significance. DNA viruses are increasingly being recognized as significant components of biogeochemical cycling in the oceans. Dominguez-Huerta et al. explored global patterns of marine RNA virus occurrence by extracting virus sequences from Tara Ocean samples. Host prediction analysis identified predominantly protist and fungal hosts plus a few invertebrates. Like double-stranded DNA viruses and their hosts, RNA viruses showed marked depth limitation but little latitudinal change. Auxiliary metabolic genes in the RNA virome indicated that several eukaryote plankton processes are affected by viruses. A group of 11 RNA viruses that significantly influence ocean carbon flux were identified. —CA Community- and “species”-level analyses elucidate ecological impacts and roles of marine RNA viruses.
Mots-clés : -
Commentaire : -
Tags : -
Fichier attaché : -
Citation :
Dominguez-Huerta G, Zayed A, Wainaina JM, Guo J, Tian F, Pratama AA, Bolduc B, Mohssen M, Zablocki O, Pelletier E, Delage E, Alberti A, Aury J-M, Carradec Q, De Silva C, Labadie K, Poulain J, Bowler C, Eveillard D, Guidi L, Karsenti E, Kuhn JH, Ogata H, Wincker P, Culley A, Chaffron S, Sullivan MB (2022) Diversity and ecological footprint of Global Ocean RNA viruses. Science 376: 1202-1208 | doi: 10.1126/science.abn6358