Expanded phylogeny of extremely halophilic archaea shows multiple independent adaptations to hypersaline environments.


Journal

Nature microbiology
ISSN: 2058-5276
Titre abrégé: Nat Microbiol
Pays: England
ID NLM: 101674869

Informations de publication

Date de publication:
22 Mar 2024
Historique:
received: 30 06 2023
accepted: 20 02 2024
medline: 23 3 2024
pubmed: 23 3 2024
entrez: 23 3 2024
Statut: aheadofprint

Résumé

Extremely halophilic archaea (Haloarchaea, Nanohaloarchaeota, Methanonatronarchaeia and Halarchaeoplasmatales) thrive in saturating salt concentrations where they must maintain osmotic equilibrium with their environment. The evolutionary history of adaptations enabling salt tolerance remains poorly understood, in particular because the phylogeny of several lineages is conflicting. Here we present a resolved phylogeny of extremely halophilic archaea obtained using improved taxon sampling and state-of-the-art phylogenetic approaches designed to cope with the strong compositional biases of their proteomes. We describe two uncultured lineages, Afararchaeaceae and Asbonarchaeaceae, which break the long branches at the base of Haloarchaea and Nanohaloarchaeota, respectively. We obtained 13 metagenome-assembled genomes (MAGs) of these archaea from metagenomes of hypersaline aquatic systems of the Danakil Depression (Ethiopia). Our phylogenomic analyses including these taxa show that at least four independent adaptations to extreme halophily occurred during archaeal evolution. Gene-tree/species-tree reconciliation suggests that gene duplication and horizontal gene transfer played an important role in this process, for example, by spreading key genes (such as those encoding potassium transporters) across extremely halophilic lineages.

Identifiants

pubmed: 38519541
doi: 10.1038/s41564-024-01647-4
pii: 10.1038/s41564-024-01647-4
doi:

Types de publication

Journal Article

Langues

eng

Sous-ensembles de citation

IM

Subventions

Organisme : EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council)
ID : 787904
Organisme : EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council)
ID : 803151

Informations de copyright

© 2024. The Author(s), under exclusive licence to Springer Nature Limited.

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Auteurs

Brittany A Baker (BA)

Ecologie Systématique Evolution, CNRS, Université Paris-Saclay, AgroParisTech, Gif-sur-Yvette, France.

Ana Gutiérrez-Preciado (A)

Ecologie Systématique Evolution, CNRS, Université Paris-Saclay, AgroParisTech, Gif-sur-Yvette, France.

Álvaro Rodríguez Del Río (Á)

Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM) - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), Madrid, Spain.

Charley G P McCarthy (CGP)

Institute for Comparative Genomics, Dalhousie University, Halifax, Nova Scotia, Canada.
Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada.

Purificación López-García (P)

Ecologie Systématique Evolution, CNRS, Université Paris-Saclay, AgroParisTech, Gif-sur-Yvette, France.

Jaime Huerta-Cepas (J)

Centro de Biotecnología y Genómica de Plantas, Universidad Politécnica de Madrid (UPM) - Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria (INIA-CSIC), Madrid, Spain.

Edward Susko (E)

Institute for Comparative Genomics, Dalhousie University, Halifax, Nova Scotia, Canada.
Department of Mathematics and Statistics, Dalhousie University, Halifax, Nova Scotia, Canada.

Andrew J Roger (AJ)

Institute for Comparative Genomics, Dalhousie University, Halifax, Nova Scotia, Canada.
Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada.

Laura Eme (L)

Ecologie Systématique Evolution, CNRS, Université Paris-Saclay, AgroParisTech, Gif-sur-Yvette, France. laura.eme@universite-paris-saclay.fr.

David Moreira (D)

Ecologie Systématique Evolution, CNRS, Université Paris-Saclay, AgroParisTech, Gif-sur-Yvette, France. david.moreira@universite-paris-saclay.fr.

Classifications MeSH