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Auteur (up) Pereira, O.; Hochart, C.; Auguet, J.C.; Debroas, D.; Galand, P.E. doi  openurl
  Titre Genomic ecology of Marine Group II, the most common marine planktonic Archaea across the surface ocean Type Article scientifique
  Année 2019 Publication Revue Abrégée MicrobiologyOpen  
  Volume 8 Numéro 9 Pages e852  
  Mots-Clés 16S rRNA; abundance; assemblages; bacteria; carbon; community; dynamics; euryarchaeota; Euryarchaeota; global ocean; insights; metagenomics; organisms; poseidoniales; proteorhodopsin  
  Résumé Planktonic Archaea have been detected in all the world's oceans and are found from surface waters to the deep sea. The two most common Archaea phyla are Thaumarchaeota and Euryarchaeota. Euryarchaeota are generally more common in surface waters, but very little is known about their ecology and their potential metabolisms. In this study, we explore the genomic ecology of the Marine Group II (MGII), the main marine planktonic Euryarchaeota, and test if it is composed of different ecologically relevant units. We re-analyzed Tara Oceans metagenomes from the photic layer and the deep ocean by annotating sequences against a custom MGII database and by mapping gene co-occurrences. Our data provide a global view of the distribution of Euryarchaeota, and more specifically of MGII subgroups, and reveal their association to a number of gene-coding sequences. In particular, we show that MGII proteorhodopsins were detected in both the surface and the deep chlorophyll maximum layer and that different clusters of these light harvesting proteins were present. Our approach helped describing the set of genes found together with specific MGII subgroups. We could thus define genomic environments that could theoretically describe ecologically meaningful units and the ecological niche that they occupy.  
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  Langue English Langue du Résumé Titre Original  
  Éditeur de collection Titre de collection Titre de collection Abrégé  
  Volume de collection Numéro de collection Edition  
  ISSN 2045-8827 ISBN Médium  
  Région Expédition Conférence  
  Notes WOS:000485975100029 Approuvé pas de  
  Numéro d'Appel MARBEC @ isabelle.vidal-ayouba @ collection 2653  
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