| The biogeochemical role of Actinobacteria in Altamira Cave, Spain. | |
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MedLine Citation:
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PMID: 22500975 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The walls and ceiling of Altamira Cave in Spain are coated with different coloured spots (yellow, white and grey). An electron microscopy study revealed that the grey spots are composed of bacteria and bioinduced CaCO(3) crystals. The morphology of the spots shows a dense network of microorganisms organised in well-defined radial and dendritic divergent branching from the central area towards the exterior of the spot, which is coated with overlying spheroidal elements of CaCO(3) and CaCO(3) nest-like aggregates. Molecular analysis indicated that grey spots were mainly formed by yet-to-be-cultivated Actinobacteria species. CO(2) efflux measurements in rocks heavily covered by grey spots confirmed that bacteria-forming spots promoted the uptake of the gas, very abundant in the cave. The bacteria can use the captured CO(2) to dissolve the rock and subsequently generate crystals of CaCO(3) in periods of lower humidity and/or CO(2) . A tentative model for grey spots formation, supported by scanning electron microscopy and transmission electron microscopy data, is proposed. © 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved. |
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Authors:
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S Cuezva; A Fernandez-Cortes; E Porca; L Pašić; V Jurado; M Hernandez-Marine; P Serrano-Ortiz; B Hermosin; J C Cañaveras; S Sanchez-Moral; C Saiz-Jimenez |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-16 |
Journal Detail:
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Title: FEMS microbiology ecology Volume: - ISSN: 1574-6941 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-16 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8901229 Medline TA: FEMS Microbiol Ecol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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© 2012 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved. |
Affiliation:
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Laboratorio de Petrologia Aplicada, Departamento de Ciencias de la Tierra y del Medio Ambiente, Apartado 99, Universidad de Alicante, 03080, Alicante, Spain. |
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