Show simple item record

Files in this item


Item metadata

dc.contributor.authorEnzingmüller-Bleyl, Tristan C.
dc.contributor.authorBoden, Joanne S.
dc.contributor.authorHerrmann, Achim J.
dc.contributor.authorEbel, Katharina W.
dc.contributor.authorSánchez-Baracaldo, Patricia
dc.contributor.authorFrankenberg-Dinkel, Nicole
dc.contributor.authorGehringer, Michelle M.
dc.identifier.citationEnzingmüller-Bleyl , T C , Boden , J S , Herrmann , A J , Ebel , K W , Sánchez-Baracaldo , P , Frankenberg-Dinkel , N & Gehringer , M M 2022 , ' On the trail of iron uptake in ancestral Cyanobacteria on early Earth ' , Geobiology , vol. Early View .
dc.identifier.otherRIS: urn:79D6C3BA518215502E02ABAF7D64909F
dc.identifier.otherORCID: /0000-0003-0412-3668/work/120434282
dc.descriptionThis project was funded by the German Research Foundation SPP1833, DFG, Grant numbers: GE2558/3-1 & GE2558/4-1 awarded to MMG, a University of Bristol Graduate Teaching Scholarship awarded to J.S.B. and a Royal Society University Research Fellowship awarded to P.S-B. Open Access funding enabled and organized by Projekt DEAL.en
dc.description.abstractCyanobacteria oxygenated Earth's atmosphere ~2.4 billion years ago, during the Great Oxygenation Event (GOE), through oxygenic photosynthesis. Their high iron requirement was presumably met by high levels of Fe(II) in the anoxic Archean environment. We found that many deeply branching Cyanobacteria, including two Gloeobacter and four Pseudanabaena spp., cannot synthesize the Fe(II) specific transporter, FeoB. Phylogenetic and relaxed molecular clock analyses find evidence that FeoB and the Fe(III) transporters, cFTR1 and FutB, were present in Proterozoic, but not earlier Archaean lineages of Cyanobacteria. Furthermore Pseudanabaena sp. PCC7367, an early diverging marine, benthic strain grown under simulated Archean conditions, constitutively expressed cftr1, even after the addition of Fe(II). Our genetic profiling suggests that, prior to the GOE, ancestral Cyanobacteria may have utilized alternative metal iron transporters such as ZIP, NRAMP, or FicI, and possibly also scavenged exogenous siderophore bound Fe(III), as they only acquired the necessary Fe(II) and Fe(III) transporters during the Proterozoic. Given that Cyanobacteria arose 3.3-3.6 billion years ago, it is possible that limitations in iron uptake may have contributed to the delay in their expansion during the Archean, and hence the oxygenation of the early Earth.
dc.subjectIron uptakeen
dc.subjectMolecular clocken
dc.subjectPseudanabaena sp. PCC7367en
dc.subjectQR Microbiologyen
dc.subjectSDG 14 - Life Below Wateren
dc.titleOn the trail of iron uptake in ancestral Cyanobacteria on early Earthen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. School of Earth & Environmental Sciencesen
dc.description.statusPeer revieweden

This item appears in the following Collection(s)

Show simple item record