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Eukaryotic plankton diversity in the sunlit ocean
Auteur(s)
de Vargas, Colomban
Audic, Stéphane
Henry, Nicolas
Decelle, Johan
Mahé, Frédéric
Logares, Ramiro
Berney, Cédric
Le Bescot, Noan
Probert, Ian
Carmichael, Margaux
Poulain, Julie
Romac, Sarah
Colin, Sébastien
Aury, Jean-Marc
Bittner, Lucie
Chaffron, Samuel
Dunthorn, Micah
Engelen, Stefan
Flegontova, Olga
Guidi, Lionel
Horák, Aleš
Jaillon, Olivier
Lima-Mendez, Gipsi
Lukeš, Julius
Malviya, Shruti
Morard, Raphael
Scalco, Eleonora
Siano, Raffaele
Vincent, Flora
Zingone, Adriana
Dimier, Céline
Picheral, Marc
Searson, Sarah
Kandels-Lewis, Stefanie
Acinas, Silvia G
Bork, Peer
Bowler, Chris
Gorsky, Gabriel
Grimsley, Nigel
Hingamp, Pascal
Iudicone, Daniele
Not, Fabrice
Ogata, Hiroyuki
Pesant, Stephane
Raes, Jeroen
Sieracki, Michael E
Speich, Sabrina
Stemmann, Lars
Sunagawa, Shinichi
Weissenbach, Jean
Wincker, Patrick
Karsenti, Eric
In
Science, American Association for the Advancement of Science, 2015/348/6237/1261605-1/11
Résumé
Marine plankton support global biological and geochemical processes. Surveys of their biodiversity have hitherto been geographically restricted and have not accounted for the full range of plankton size.We assessed eukaryotic diversity from 334 size-fractionated photic-zone plankton communities collected across tropical and temperate oceans during the circumglobal <i>Tara</i> Oceans expedition.We analyzed 18S ribosomal DNA sequences across the intermediate plankton-size spectrum from the smallest unicellular eukaryotes (protists, >0.8 micrometers) to small animals of a few millimeters. Eukaryotic ribosomal diversity saturated at ∼150,000 operational taxonomic units, about one-third of which could not be assigned to known eukaryotic groups. Diversity emerged at all taxonomic levels, both within the groups comprising the ∼11,200 cataloged morphospecies of eukaryotic plankton and among twice as many other deep-branching lineages of unappreciated importance in plankton ecology studies. Most eukaryotic plankton biodiversity belonged to heterotrophic protistan groups, particularly those known to be parasites or symbiotic hosts.
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Type de publication
journal article
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