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Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2021

Phylogenomic fingerprinting of tempo and functions of horizontal gene transfer within ochrophytes

Adrien Villain
Benoît Perez-Lamarque
Hélène Morlon
Chris Bowler
Guillaume Blanc

Résumé

Significance The ochrophytes are an ancient and important group of eukaryotic algae, including diatoms, the most important photosynthesisers in the modern ocean, and a wide range of other species. Throughout their history, ochrophytes have exchanged genes with bacteria and eukaryotes through horizontal gene transfer (HGT), diversifying their cell biology. Here, we profile thousands of phylogenetic trees, showing that HGTs from bacteria contribute particularly to the recent evolution of diatoms, occurring more frequently than HGTs from eukaryotes and, potentially, more frequently in diatoms than other ochrophytes. Using experimental and computational techniques, we show that bacterial HGTs predominantly impact the diatom secreted proteome, which may contribute to the striking evolutionary success of diatoms.
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mnhn-03969507 , version 1 (02-02-2023)

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Richard G Dorrell, Adrien Villain, Benoît Perez-Lamarque, Guillemette Audren de Kerdrel, Giselle Mccallum, et al.. Phylogenomic fingerprinting of tempo and functions of horizontal gene transfer within ochrophytes. Proceedings of the National Academy of Sciences of the United States of America, 2021, 118 (4), ⟨10.1073/pnas.2009974118/-/DCSupplemental⟩. ⟨mnhn-03969507⟩
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