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Single-cell genomics of multiple uncultured stramenopiles reveals underestimated functional diversity across oceans.


ABSTRACT: Single-celled eukaryotes (protists) are critical players in global biogeochemical cycling of nutrients and energy in the oceans. While their roles as primary producers and grazers are well appreciated, other aspects of their life histories remain obscure due to challenges in culturing and sequencing their natural diversity. Here, we exploit single-cell genomics and metagenomics data from the circumglobal Tara Oceans expedition to analyze the genome content and apparent oceanic distribution of seven prevalent lineages of uncultured heterotrophic stramenopiles. Based on the available data, each sequenced genome or genotype appears to have a specific oceanic distribution, principally correlated with water temperature and depth. The genome content provides hypotheses for specialization in terms of cell motility, food spectra, and trophic stages, including the potential impact on their lifestyles of horizontal gene transfer from prokaryotes. Our results support the idea that prominent heterotrophic marine protists perform diverse functions in ocean ecology.

SUBMITTER: Seeleuthner Y 

PROVIDER: S-EPMC5778133 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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Single-cell genomics of multiple uncultured stramenopiles reveals underestimated functional diversity across oceans.

Seeleuthner Yoann Y   Mondy Samuel S   Lombard Vincent V   Carradec Quentin Q   Pelletier Eric E   Wessner Marc M   Leconte Jade J   Mangot Jean-François JF   Poulain Julie J   Labadie Karine K   Logares Ramiro R   Sunagawa Shinichi S   de Berardinis Véronique V   Salanoubat Marcel M   Dimier Céline C   Kandels-Lewis Stefanie S   Picheral Marc M   Searson Sarah S   Pesant Stephane S   Poulton Nicole N   Stepanauskas Ramunas R   Bork Peer P   Bowler Chris C   Hingamp Pascal P   Sullivan Matthew B MB   Iudicone Daniele D   Massana Ramon R   Aury Jean-Marc JM   Henrissat Bernard B   Karsenti Eric E   Jaillon Olivier O   Sieracki Mike M   de Vargas Colomban C   Wincker Patrick P  

Nature communications 20180122 1


Single-celled eukaryotes (protists) are critical players in global biogeochemical cycling of nutrients and energy in the oceans. While their roles as primary producers and grazers are well appreciated, other aspects of their life histories remain obscure due to challenges in culturing and sequencing their natural diversity. Here, we exploit single-cell genomics and metagenomics data from the circumglobal Tara Oceans expedition to analyze the genome content and apparent oceanic distribution of se  ...[more]

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