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dc.contributor.authorSánchez-Andrea, Irenepor
dc.contributor.authorvan der Graaf, Charlotte M.por
dc.contributor.authorHornung, Bastianpor
dc.contributor.authorBale, Nicole J.por
dc.contributor.authorJarzembowska, Monikapor
dc.contributor.authorSousa, Diana Zita Machadopor
dc.contributor.authorRijpstra, W. Irene C.por
dc.contributor.authorSinninghe Damsté, Jaap S.por
dc.contributor.authorStams, Alfons Johannes Mariapor
dc.date.accessioned2022-04-27T10:41:17Z-
dc.date.available2022-04-27T10:41:17Z-
dc.date.issued2022-03-04-
dc.identifier.citationSánchez-Andrea, Irene; van der Graaf, Charlotte M.; Hornung, Bastian; Bale, Nicole J.; Jarzembowska, Monika; Sousa, Diana Z.; Rijpstra, W. Irene C.; Sinninghe Damsté, Jaap S.; Stams, A. J. M., Acetate degradation at low pH by the moderately acidophilic sulfate reducer Acididesulfobacillus acetoxydans gen. nov. sp. nov.. Frontiers in Microbiology, 13(816605), 2022por
dc.identifier.issn1664-302Xpor
dc.identifier.urihttps://hdl.handle.net/1822/77251-
dc.descriptionThe Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fmicb.2022.816605/full#supplementary-materialpor
dc.description.abstractIn acid drainage environments, biosulfidogenesis by sulfate-reducing bacteria (SRB) attenuates the extreme conditions by enabling the precipitation of metals as their sulfides, and the neutralization of acidity through proton consumption. So far, only a handful of moderately acidophilic SRB species have been described, most of which are merely acidotolerant. Here, a novel species within a novel genus of moderately acidophilic SRB is described, Acididesulfobacillus acetoxydans gen. nov. sp. nov. strain INE, able to grow at pH 3.8. Bioreactor studies with strain INE at optimum (5.0) and low (3.9) pH for growth showed that strain INE alkalinized its environment, and that this was more pronounced at lower pH. These studies also showed the capacity of strain INE to completely oxidize organic acids to CO2, which is uncommon among acidophilic SRB. Since organic acids are mainly in their protonated form at low pH, which increases their toxicity, their complete oxidation may be an acid stress resistance mechanism. Comparative proteogenomic and membrane lipid analysis further indicated that the presence of saturated ether-bound lipids in the membrane, and their relative increase at lower pH, was a protection mechanism against acid stress. Interestingly, other canonical acid stress resistance mechanisms, such as a Donnan potential and increased active charge transport, did not appear to be active.por
dc.description.sponsorshipThis work was financed by ERC grants to AS (project 323009) and JS (project 694569), the research program TTW under project number 14797, which is financed by the Dutch Research Council (NWO) to IS-A, and a Gravitation grant (SIAM 024.002.002) of the Netherlands Ministry of Education, Culture and Science to AS and JS.por
dc.language.isoengpor
dc.publisherFrontiers Media S.A.por
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/323009/EUpor
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/694569/EUpor
dc.rightsopenAccesspor
dc.subjectacid rock/mine drainagepor
dc.subjectacidophilespor
dc.subjectsulfate-reducing bacteriapor
dc.subjectAcididesulfobacilluspor
dc.subjectDesulfosporosinuspor
dc.subjectDesulfitobacteriumpor
dc.subjectacetate oxidationpor
dc.subjectbioremediationpor
dc.subjectacid rockpor
dc.subjectmine drainagepor
dc.titleAcetate degradation at low pH by the moderately acidophilic sulfate reducer Acididesulfobacillus acetoxydans gen. nov. sp. nov.por
dc.typearticle-
dc.peerreviewedyespor
dc.relation.publisherversionhttp://journal.frontiersin.org/journal/microbiologypor
dc.commentsCEB55516por
oaire.citationVolume13por
dc.date.updated2022-04-26T17:16:28Z-
dc.identifier.doi10.3389/fmicb.2022.816605por
dc.description.publicationversioninfo:eu-repo/semantics/publishedVersion-
dc.subject.wosScience & Technologypor
sdum.journalFrontiers in Microbiologypor
dc.identifier.articlenumber816605por
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