{"refrec":{"BRefID":337398,"RR":"<b>Roland, F.A.E.; Borges, A.V.; Darchambeau, F.; Llirós, M.; Descy, J.-P.; Morana, C.</b> (2021). The possible occurrence of iron-dependent anaerobic methane oxidation in an Archean Ocean analogue. <i>NPG Scientific Reports 11(1)</i>: 1597. <a href=\"https://hdl.handle.net/10.1038/s41598-021-81210-x\" target=\"_blank\">https://hdl.handle.net/10.1038/s41598-021-81210-x</a>","BEntID":334020,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":1,"RefStringPartII":". <i>NPG Scientific Reports 11(1)</i>: 1597. <a href=\"https://hdl.handle.net/10.1038/s41598-021-81210-x\" target=\"_blank\">https://hdl.handle.net/10.1038/s41598-021-81210-x</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Roland, F.A.E.; Borges, A.V.; Darchambeau, F.; Llirós, M.; Descy, J.-P.; Morana, C.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Roland, F.A.E. <i>et al.</i>","Englishabstract":"In the ferruginous and anoxic early Earth oceans, photoferrotrophy drove most of the biological production before the advent of oxygenic photosynthesis, but its association with ferric iron (Fe<sup>3+</sup>) dependent anaerobic methane (CH<sub>4</sub>) oxidation (AOM) has been poorly investigated. We studied AOM in Kabuno Bay, a modern analogue to the Archean Ocean (anoxic bottom waters and dissolved Fe concentrations &gt; 600&nbsp;µmol&nbsp;L<sup>−1</sup>). Aerobic and anaerobic CH<sub>4</sub> oxidation rates up to 0.12 ± 0.03 and 51 ± 1&nbsp;µmol&nbsp;L<sup>−1</sup>&nbsp;d<sup>−1</sup>, respectively, were put in evidence. In the Fe oxidation–reduction zone, we observed high concentration of Bacteriochlorophyll e (biomarker of the anoxygenic photoautotrophs), which co-occurred with the maximum CH<sub>4</sub> oxidation peaks, and a high abundance of Candidatus Methanoperedens, which can couple AOM to Fe<sup>3+</sup> reduction. In addition, comparison of measured CH<sub>4</sub> oxidation rates with electron acceptor fluxes suggest that AOM could mainly rely on Fe<sup>3+</sup> produced by photoferrotrophs. Further experiments specifically targeted to investigate the interactions between photoferrotrophs and AOM would be of considerable interest. Indeed, ferric Fe<sup>3+</sup>-driven AOM has been poorly envisaged as a possible metabolic process in the Archean ocean, but this can potentially change the conceptualization and modelling of metabolic and geochemical processes controlling climate conditions in the Early Earth.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"The possible occurrence of iron-dependent anaerobic methane oxidation in an Archean Ocean analogue","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2026-04-24 01:33:04.239076","timezone_type":1,"timezone":"+02:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":2021,"MonPub":null,"DateUpdate":"2021-05-22","DateCreate":"2021-05-17","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000609782400118","VABBcode":null,"OpenAcc":1,"Handle":"10.1038/s41598-021-81210-x"},"refs":null,"anarec":{"AnaID":337398,"PubliDate":2021,"Pagination":"1597","XtraPublOfAnaID":null,"ISBN":null,"Volume":"11","Issue":"1","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":208093,"SerRR":"Scientific Reports (Nature Publishing Group). Nature Publishing Group: London.  ISSN 2045-2322; e-ISSN 2045-2322","StandardTitleSer":"Scientific Reports (Nature Publishing Group)","ISSN":"2045-2322","AbbrevSer":"NPG Scientific Reports","StandardTitleMon":null,"StartPage":11,"Pages":null,"ToPubliDate":null,"BRefBibLvlCode":"S","SerNotes":null},"monrec":null,"serrec":null,"relations":null,"relationsRev":null,"addrec":null,"othpubs":null,"ownerships":null,"authors":[{"AutName":"Roland","Firstname":"Fleur","Initials":"F.A.E.","Affiliation":"Chemical Oceanography Unit, Université de Liège","Discriminator":null,"CorporateFlag":0,"BEntID":334020,"AutID":251275,"OrderNr":1,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":"Université de Liège; Faculté des Sciences; Département d'Astrophysique, Géophysique et Océanographie; Unité d’Océanographie Chimique","ORCID":null,"PersID":34479,"InsID":153},{"AutName":"Borges","Firstname":"Alberto Vieira","Initials":"A.V.","Affiliation":"Chemical Oceanography Unit, Université de Liège","Discriminator":null,"CorporateFlag":0,"BEntID":334020,"AutID":155172,"OrderNr":2,"DegrID":null,"EditorFlag":0,"CorrespFlag":0,"IllustratorFlag":0,"ReviserFlag":0,"TranslatorFlag":0,"InsAcronym":null,"InsFSN":"Université de Liège; 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