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Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions
Discovery of Fe-carbonate precipitation in Rio Tinto, a shallow river with very acidic waters, situated in Huelva, South-western Spain, adds a new dimension to our understanding of carbonate formation. Sediment samples from this low-pH system indicate that carbonates are formed in physico-chemical c...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3996482/ https://www.ncbi.nlm.nih.gov/pubmed/24755961 http://dx.doi.org/10.1038/srep04767 |
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author | Sánchez-Román, Mónica Fernández-Remolar, David Amils, Ricardo Sánchez-Navas, Antonio Schmid, Thomas Martin-Uriz, Patxi San Rodríguez, Nuria McKenzie, Judith A. Vasconcelos, Crisogono |
author_facet | Sánchez-Román, Mónica Fernández-Remolar, David Amils, Ricardo Sánchez-Navas, Antonio Schmid, Thomas Martin-Uriz, Patxi San Rodríguez, Nuria McKenzie, Judith A. Vasconcelos, Crisogono |
author_sort | Sánchez-Román, Mónica |
collection | PubMed |
description | Discovery of Fe-carbonate precipitation in Rio Tinto, a shallow river with very acidic waters, situated in Huelva, South-western Spain, adds a new dimension to our understanding of carbonate formation. Sediment samples from this low-pH system indicate that carbonates are formed in physico-chemical conditions ranging from acid to neutral pH. Evidence for microbial mediation is observed in secondary electron images (Fig. 1), which reveal rod-shaped bacteria embedded in the surface of siderite nanocrystals. The formation of carbonates in Rio Tinto is related to the microbial reduction of ferric iron coupled to the oxidation of organic compounds. Herein, we demonstrate for the first time, that Acidiphilium sp. PM, an iron-reducing bacterium isolated from Rio Tinto, mediates the precipitation of siderite (FeCO(3)) under acidic conditions and at a low temperature (30°C). We describe nucleation of siderite on nanoglobules in intimate association with the bacteria cell surface. This study has major implications for understanding carbonate formation on the ancient Earth or extraterrestrial planets. |
format | Online Article Text |
id | pubmed-3996482 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-39964822014-04-24 Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions Sánchez-Román, Mónica Fernández-Remolar, David Amils, Ricardo Sánchez-Navas, Antonio Schmid, Thomas Martin-Uriz, Patxi San Rodríguez, Nuria McKenzie, Judith A. Vasconcelos, Crisogono Sci Rep Article Discovery of Fe-carbonate precipitation in Rio Tinto, a shallow river with very acidic waters, situated in Huelva, South-western Spain, adds a new dimension to our understanding of carbonate formation. Sediment samples from this low-pH system indicate that carbonates are formed in physico-chemical conditions ranging from acid to neutral pH. Evidence for microbial mediation is observed in secondary electron images (Fig. 1), which reveal rod-shaped bacteria embedded in the surface of siderite nanocrystals. The formation of carbonates in Rio Tinto is related to the microbial reduction of ferric iron coupled to the oxidation of organic compounds. Herein, we demonstrate for the first time, that Acidiphilium sp. PM, an iron-reducing bacterium isolated from Rio Tinto, mediates the precipitation of siderite (FeCO(3)) under acidic conditions and at a low temperature (30°C). We describe nucleation of siderite on nanoglobules in intimate association with the bacteria cell surface. This study has major implications for understanding carbonate formation on the ancient Earth or extraterrestrial planets. Nature Publishing Group 2014-04-23 /pmc/articles/PMC3996482/ /pubmed/24755961 http://dx.doi.org/10.1038/srep04767 Text en Copyright © 2014, Macmillan Publishers Limited. All rights reserved http://creativecommons.org/licenses/by-nc-nd/3.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License. The images in this article are included in the article's Creative Commons license, unless indicated otherwise in the image credit; if the image is not included under the Creative Commons license, users will need to obtain permission from the license holder in order to reproduce the image. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/3.0/ |
spellingShingle | Article Sánchez-Román, Mónica Fernández-Remolar, David Amils, Ricardo Sánchez-Navas, Antonio Schmid, Thomas Martin-Uriz, Patxi San Rodríguez, Nuria McKenzie, Judith A. Vasconcelos, Crisogono Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions |
title | Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions |
title_full | Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions |
title_fullStr | Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions |
title_full_unstemmed | Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions |
title_short | Microbial mediated formation of Fe-carbonate minerals under extreme acidic conditions |
title_sort | microbial mediated formation of fe-carbonate minerals under extreme acidic conditions |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3996482/ https://www.ncbi.nlm.nih.gov/pubmed/24755961 http://dx.doi.org/10.1038/srep04767 |
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