Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions

Shewanella is a genus of marine bacteria capable of dissimilatory iron reduction (DIR). In the context of deep-sea mining activities or submarine mine tailings disposal, dissimilatory iron reducing bacteria may play an important role in biogeochemical reactions concerning iron oxides placed on the s...

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Autores: Benaiges-Fernández, Robert, Palau, Jordi, Offeddu, Francesco G., Cama, Jordi, Urmeneta, Jordi, Soler, Josep M., Dold, Bernhard
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/192333
Acceso en línea:http://hdl.handle.net/10261/192333
Access Level:acceso abierto
Palabra clave:Dissolution
Iron oxide
Marine sediment
Iron bioreduction
Shewanella loihica
Sediments
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spelling Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditionsBenaiges-Fernández, RobertPalau, JordiOffeddu, Francesco G.Cama, JordiUrmeneta, JordiSoler, Josep M.Dold, BernhardDissolutionIron oxideMarine sedimentIron bioreductionShewanella loihicaSedimentsShewanella is a genus of marine bacteria capable of dissimilatory iron reduction (DIR). In the context of deep-sea mining activities or submarine mine tailings disposal, dissimilatory iron reducing bacteria may play an important role in biogeochemical reactions concerning iron oxides placed on the sea bed. In this study, batch experiments were performed to evaluate the capacity of Shewanella loihica PV-4 to bioreduce different iron oxides (ferrihydrite, magnetite, goethite and hematite) under conditions similar to those in anaerobic sea sediments. Results showed that bioreduction of structural Fe(III) via oxidation of labile organic matter occurred in all these iron oxides. Based on the aqueous Fe (II) released, derived Fe(II)/acetate ratios and bioreduction coefficients seem to be only up to about 4% of the theoretical ones, considering the ideal stoichiometry of the reaction. A loss of aqueous Fe (II) was caused by adsorption and mineral transformation processes. Scanning electron microscope images showed that Shewanella lohica was attached to the Fe(III)-oxide surfaces during bioreduction. Our findings suggest that DIR of Fe(III) oxides from mine waste placed in marine environments could result in adverse ecological impacts such as liberation of trace metals in the environment. © 2019 Elsevier LtdThanks are due to Javier García-Veigas, Eva Prats and Maite Romero (Scientific and Technical Services of the University of Barcelona) for technical assistance in the SEM-EDX and ICP-AES analyses, and to Jordi Bellés (IDAEA-CSIC) for technical assistance in the laboratory. We are indebted to Natàlia Moreno (IDAEA-CSIC) for her assistance in the XRD analyses. This study was funded by the Chilean Government through the Research Fund for Fishery and Aquaculture (Fondo de Investigación Pesquera y de Acuicultura; FIPA) of SUBPESCA , Project No. FIP 2015-11 and the Catalan Government through project 2017SGR 1733 . Appendix APeer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201920192019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/192333reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.marenvres.2019.104782Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1923332026-05-22T06:33:51Z
dc.title.none.fl_str_mv Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions
title Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions
spellingShingle Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions
Benaiges-Fernández, Robert
Dissolution
Iron oxide
Marine sediment
Iron bioreduction
Shewanella loihica
Sediments
title_short Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions
title_full Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions
title_fullStr Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions
title_full_unstemmed Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions
title_sort Dissimilatory bioreduction of iron(III) oxides by Shewanella loihica under 1 marine sediment conditions
dc.creator.none.fl_str_mv Benaiges-Fernández, Robert
Palau, Jordi
Offeddu, Francesco G.
Cama, Jordi
Urmeneta, Jordi
Soler, Josep M.
Dold, Bernhard
author Benaiges-Fernández, Robert
author_facet Benaiges-Fernández, Robert
Palau, Jordi
Offeddu, Francesco G.
Cama, Jordi
Urmeneta, Jordi
Soler, Josep M.
Dold, Bernhard
author_role author
author2 Palau, Jordi
Offeddu, Francesco G.
Cama, Jordi
Urmeneta, Jordi
Soler, Josep M.
Dold, Bernhard
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Dissolution
Iron oxide
Marine sediment
Iron bioreduction
Shewanella loihica
Sediments
topic Dissolution
Iron oxide
Marine sediment
Iron bioreduction
Shewanella loihica
Sediments
description Shewanella is a genus of marine bacteria capable of dissimilatory iron reduction (DIR). In the context of deep-sea mining activities or submarine mine tailings disposal, dissimilatory iron reducing bacteria may play an important role in biogeochemical reactions concerning iron oxides placed on the sea bed. In this study, batch experiments were performed to evaluate the capacity of Shewanella loihica PV-4 to bioreduce different iron oxides (ferrihydrite, magnetite, goethite and hematite) under conditions similar to those in anaerobic sea sediments. Results showed that bioreduction of structural Fe(III) via oxidation of labile organic matter occurred in all these iron oxides. Based on the aqueous Fe (II) released, derived Fe(II)/acetate ratios and bioreduction coefficients seem to be only up to about 4% of the theoretical ones, considering the ideal stoichiometry of the reaction. A loss of aqueous Fe (II) was caused by adsorption and mineral transformation processes. Scanning electron microscope images showed that Shewanella lohica was attached to the Fe(III)-oxide surfaces during bioreduction. Our findings suggest that DIR of Fe(III) oxides from mine waste placed in marine environments could result in adverse ecological impacts such as liberation of trace metals in the environment. © 2019 Elsevier Ltd
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/192333
url http://hdl.handle.net/10261/192333
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.marenvres.2019.104782
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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