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dc.contributor.authorMacey, M. C.
dc.contributor.authorFox-Powell, M.
dc.contributor.authorRamkissoon, N. K.
dc.contributor.authorStephens, B. P.
dc.contributor.authorBarton, T.
dc.contributor.authorSchwenzer, S. P.
dc.contributor.authorPearson, V. K.
dc.contributor.authorCousins, C. R.
dc.contributor.authorOlsson-Francis, K.
dc.date.accessioned2020-07-15T16:30:13Z
dc.date.available2020-07-15T16:30:13Z
dc.date.issued2020-07-02
dc.identifier269159506
dc.identifier44b21f82-67c6-46d8-ab14-d5ad680a41eb
dc.identifier85087359448
dc.identifier32616785
dc.identifier000550002500049
dc.identifier.citationMacey , M C , Fox-Powell , M , Ramkissoon , N K , Stephens , B P , Barton , T , Schwenzer , S P , Pearson , V K , Cousins , C R & Olsson-Francis , K 2020 , ' The identification of sulfide oxidation as a potential metabolism driving primary production on late Noachian Mars ' , Scientific Reports , vol. 10 , 10941 . https://doi.org/10.1038/s41598-020-67815-8en
dc.identifier.issn2045-2322
dc.identifier.otherORCID: /0000-0002-3954-8079/work/77525130
dc.identifier.urihttps://hdl.handle.net/10023/20259
dc.descriptionAuthors acknowledge funding from the Science and Technology Facilities Council from the Grant ST/P000657/1. We would also like to acknowledge funding from a Leverhulme Trust Research Project Grant (RPG-2016-153) and thank the Polar Continental Shelf Program (Natural Resources Canada) for logistical field support in Nunavut.en
dc.description.abstractThe transition of the martian climate from the wet Noachian era to the dry Hesperian (4.1–3.0 Gya) likely resulted in saline surface waters that were rich in sulfur species. Terrestrial analogue environments that possess a similar chemistry to these proposed waters can be used to develop an understanding of the diversity of microorganisms that could have persisted on Mars under such conditions. Here, we report on the chemistry and microbial community of the highly reducing sediment of Colour Peak springs, a sulfidic and saline spring system located within the Canadian High Arctic. DNA and cDNA 16S rRNA gene profiling demonstrated that the microbial community was dominated by sulfur oxidising bacteria, suggesting that primary production in the sediment was driven by chemolithoautotrophic sulfur oxidation. It is possible that the sulfur oxidising bacteria also supported the persistence of the additional taxa. Gibbs energy values calculated for the brines, based on the chemistry of Gale crater, suggested that the oxidation of reduced sulfur species was an energetically viable metabolism for life on early Mars.
dc.format.extent1865667
dc.language.isoeng
dc.relation.ispartofScientific Reportsen
dc.subjectQB Astronomyen
dc.subjectQR Microbiologyen
dc.subjectDASen
dc.subjectSDG 13 - Climate Actionen
dc.subject.lccQBen
dc.subject.lccQRen
dc.titleThe identification of sulfide oxidation as a potential metabolism driving primary production on late Noachian Marsen
dc.typeJournal articleen
dc.contributor.sponsorThe Leverhulme Trusten
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.contributor.institutionUniversity of St Andrews. St Andrews Centre for Exoplanet Scienceen
dc.identifier.doi10.1038/s41598-020-67815-8
dc.description.statusPeer revieweden
dc.identifier.grantnumberRPG-2019-353en


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