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Campo DC | Valor | Idioma |
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dc.rights.license | © David C Fernández-Remolar et al., 2021; Published by Mary Ann Liebert, Inc. | es |
dc.contributor.author | Fernández Remolar, D. C. | - |
dc.contributor.author | Gómez Ortiz, D. | - |
dc.contributor.author | Huang, T. | - |
dc.contributor.author | Anglés, A. | - |
dc.contributor.author | Shen, Y. | - |
dc.contributor.author | Hu, Q. | - |
dc.contributor.author | Amils, R. | - |
dc.contributor.author | Rodríguez, N. | - |
dc.contributor.author | Escudero, C. | - |
dc.contributor.author | Banerjee, N. R. | - |
dc.date.accessioned | 2022-04-11T12:17:56Z | - |
dc.date.available | 2022-04-11T12:17:56Z | - |
dc.date.issued | 2021-08-26 | - |
dc.identifier.citation | Astrobiology 21(11): 1387-1405(2021) | es |
dc.identifier.other | https://www.liebertpub.com/doi/full/10.1089/ast.2020.2431 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12666/734 | - |
dc.description.abstract | In the subsurface, the interplay between microbial communities and the surrounding mineral substrate, potentially used as an energy source, results in different mineralized structures. The molecular composition of such structures can record and preserve information about the metabolic pathways that have produced them. To characterize the molecular composition of the subsurface biosphere, we have analyzed some core samples by time-of-flight secondary ion mass spectrometry (ToF-SIMS) that were collected in the borehole BH8 during the operations of the Mars Analog and Technology Experiment (MARTE) project. The molecular analysis at a micron-scale mapped the occurrence of several inorganic complexes bearing PO3-, SOx(2 to 4)-, NOx(2,3)-, FeOx(1,2)-, SiO2-, and Cl-. Their distribution correlates with organic molecules that were tentatively assigned to saturated and monounsaturated fatty acids, polyunsaturated fatty acids, saccharides, phospholipids, sphingolipids, and potential peptide fragments. SOx- appear to be mineralizing some microstructures larger than 25 microns, which have branched morphologies, and that source SO3-bearing adducts. PO3-rich compounds occur in two different groups of microstructures which size, morphology, and composition are different. While a group of >40-micron sized circular micronodules lacks organic compounds, an ovoidal microstructure is associated with m/z of other lipids. The NO2-/NO3- and Cl- ions occur as small microstructure clusters (<20 microns), but their distribution is dissimilar to the mineralized microstructures bearing PO3-, and SO3-. However, they have a higher density in areas with more significant enrichment in iron oxides that are traced by different Fe-bearing anions like FeO2-. The distribution of the organic and inorganic negative ions, which we suggest, resulted from the preservation of at least three microbial consortia (PO4--, and NO2--/NO3--mineralizers PO4-lipid bearing microstructures), would have resulted from different metabolic and preservation pathways. | es |
dc.description.sponsorship | The authors are grateful for the ideas provided by several reviewers who have contributed greatly to improve the manuscript. David Fernández-Remolar acknowledges the full support provided by the Director of the SKL Lunar and Planetary Sciences Keke Zhang. This research has been supported by the Fundo de Desenvolvimento das Cientifico e da Tecnologia da RAE de Macau (proposals FDCT-0005-2020-A1 and FDCT-18-024-SSI), and the project on Civil Aerospace Technologies No. D020303 funded by China National Space Administration. Samples of borehole BH8 were collected during the ground drilling operations funded by the NRA-02-OSS-01 NASA-ASTEP “Mars Astrobiology Research and Technology Experiment (MARTE),” a Mars analog drilling project to search for subsurface life at Río Tinto. Y.S. acknowledges funding by FDCT (No. 0002/2019/APD). N.B. acknowledges funding from NSERC. | es |
dc.language.iso | eng | es |
dc.publisher | Mary Ann Liebert Publishers | es |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | es |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.subject | Underground | es |
dc.subject | Microbial communities | es |
dc.subject | Preservation | es |
dc.subject | Biomineralization | es |
dc.subject | Extreme analogs | es |
dc.title | The Molecular Record of Metabolic Activity in the Subsurface of the Río Tinto Mars Analog | es |
dc.type | info:eu-repo/semantics/article | es |
dc.identifier.doi | 10.1089/ast.2020.2431 | - |
dc.identifier.e-issn | 1557-8070 | - |
dc.contributor.funder | Fundo para o Desenvolvimento das Ciências e da Tecnologia (FDCT) | - |
dc.contributor.funder | China National Space Administration (CNSA) | - |
dc.description.peerreviewed | Peerreview | es |
dc.identifier.funder | http://dx.doi.org/10.13039/501100006469 | - |
dc.identifier.funder | http://dx.doi.org/10.13039/100017120 | - |
dc.type.hasVersion | info:eu-repo/semantics/publishedVersion | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | - |
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