Identification of enriched hyperthermophilic microbial communities from a deep-sea hydrothermal vent chimney under electrolithoautotrophic culture conditions

Autor:	Pierre-Pol Liebgott, Yannick Combet-Blanc, Sylvain Davidson, Patricia Bonin, Anne Godfroy, Oulfat Amin, Laetitia Shintu, Guillaume Pillot
Přispěvatelé:	Institut méditerranéen d'océanologie (MIO), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Toulon (UTLN)-Centre National de la Recherche Scientifique (CNRS), Institut des Sciences Moléculaires de Marseille (ISM2), Aix Marseille Université (AMU)-École Centrale de Marseille (ECM)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de microbiologie des environnements extrêmophiles (LM2E), Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université de Brest (UBO)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	0303 health sciences 030306 microbiology Ecosystem ecology Science Biodiversity Deep sea Article Hydrothermal circulation 03 medical and health sciences chemistry.chemical_compound chemistry Nitrate [SDU]Sciences of the Universe [physics] 13. Climate action Environmental chemistry Medicine Chimney Autotroph [SDE.BE]Environmental Sciences/Biodiversity and Ecology Sulfate Energy source 030304 developmental biology Hydrothermal vent
Zdroj:	Scientific Reports, Vol 11, Iss 1, Pp 1-12 (2021) Scientific Reports (2045-2322) (Springer Science and Business Media LLC), 2021-07, Vol. 11, N. 1, P. 14782 (12p.) Scientific Reports Scientific Reports, 2021, 11 (1), ⟨10.1038/s41598-021-94135-2⟩ Scientific Reports, Nature Publishing Group, 2021, 11 (1), ⟨10.1038/s41598-021-94135-2⟩
ISSN:	2045-2322
DOI:	10.1038/s41598-021-94135-2⟩
Popis:	Deep-sea hydrothermal vents are extreme and complex ecosystems based on a trophic chain. We are still unsure of the identities of the first colonizers of these environments and their metabolism, but they are thought to be (hyper)thermophilic autotrophs. Here we investigate whether the electric potential observed across hydrothermal chimneys could serve as an energy source for these first colonizers. Experiments were performed in a two-chamber microbial electrochemical system inoculated with deep-sea hydrothermal chimney samples, with a cathode as sole electron donor, CO2 as sole carbon source, and nitrate, sulfate, or oxygen as electron acceptors. After a few days of culture, all three experiments showed growth of electrotrophic biofilms consuming the electrons (directly or indirectly) and producing organic compounds including acetate, glycerol, and pyruvate. Within the biofilms, the only known autotroph species retrieved were members of Archaeoglobales. Various heterotrophic phyla also grew through trophic interactions, with Thermococcales growing in all three experiments as well as other bacterial groups specific to each electron acceptor. This electrotrophic metabolism as energy source driving initial microbial colonization of conductive hydrothermal chimneys is discussed.
Databáze:	OpenAIRE
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