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Campo DC | Valor | Idioma |
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dc.rights.license | © Laura Garcia-Descalzo et al., 2020; Published by Mary Ann Liebert, Inc. | - |
dc.contributor.author | García Descalzo, L. | - |
dc.contributor.author | Gil Lozano, C. | - |
dc.contributor.author | Muñoz Iglesias, V. | - |
dc.contributor.author | Prieto Ballesteros, O. | - |
dc.contributor.author | Azua Bustos, A. | - |
dc.contributor.author | Fairén, Alberto G. | - |
dc.contributor.other | Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-0737 | - |
dc.date.accessioned | 2021-04-14T13:18:07Z | - |
dc.date.available | 2021-04-14T13:18:07Z | - |
dc.date.issued | 2020-09-15 | - |
dc.identifier.citation | Astrobiology 20(9): 1067- 1075 (2020) | es |
dc.identifier.issn | 1531-1074 | - |
dc.identifier.other | https://www.liebertpub.com/doi/10.1089/ast.2019.2094 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12666/385 | - |
dc.description.abstract | We present the hypothesis that microorganisms can change the freezing/melting curve of cold salty solutions by protein expression, as it is known that proteins can affect the liquid-to-ice transition, an ability that could be of ecological advantage for organisms on Earth and on Mars. We tested our hypothesis by identifying a suitable candidate, the well-known psycrophile and halotolerant bacteriaRhodococcussp. JG3, and analyzing its response in culture conditions that included specific hygroscopic salts relevant to Mars-that is, highly concentrated magnesium perchlorate solutions of 20 wt % and 50 wt % Mg(ClO4)(2)at both end members of the eutectic concentration (44 wt %)-and subfreezing temperatures (263 K and 253 K). Using a combination of techniques of molecular microbiology and aqueous geochemistry, we evaluated the potential roles of proteins over- or underexpressed as important players in different mechanisms for the adaptability of life to cold environments. We recorded the changes observed by micro-differential scanning calorimetry. Unfortunately,Rhodococcussp. JG3 did not show our hypothesized effect on the melting characteristics of cold Mg-perchlorate solutions. However, the question remains as to whether our novel hypothesis that halophilic/psychrophilic bacteria or archaea can alter the freezing/melting curve of salt solutions could be validated. The null result obtained after analyzing just one case lays the foundation to continue the search for proteins produced by microorganisms that thrive in very cold, high-saline solutions, which would involve testing different microorganisms with different salt components. The immediate implications for the habitability of Mars are discussed. | es |
dc.description.sponsorship | The research leading to these results is a contribution from the Projects "icyMARS'' and "MarsFirstWater,'' funded by the European Research Council, Starting grant number 307496 and Consolidator grant number 818602, respectively, to A.G.F. V.M.I. and O.P.B. acknowledge funding from the 818602. Spanish MINECO projects ESP201455811-C2-1-P and ESP2017-89053-C2-1-P, respectively. We acknowledge support from the AEI project number MDM-2017-0737 Unidad de Excelencia "Mariia de Maeztu'' to C.A.B. ; With funding from the Spanish government through the "María de Maeztu Unit of Excellence" accreditation (MDM-2017-0737). | es |
dc.language.iso | eng | es |
dc.publisher | Mary Ann Liebert Publishers | es |
dc.relation | info:eu-repo/grantAgreement/MINECO//ESP2014-55811-C2-1-P | - |
dc.relation | info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/ESP2017-89053-C2-1-P/ES/ESTRATEGIAS DE EXPLORACION ASTROBIOLOGICA DE LUNAS HELADAS CON OCEANOS: SIMULACIONES EXPERIMENTALES DE APOYO A LAS MISIONES JUICE, EUROPA CLIPPER Y EUROPA LANDER/ | - |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 International | * |
dc.rights.uri | https://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Mars | es |
dc.subject | Extremophiles | es |
dc.subject | Perchlorates | es |
dc.subject | Cold Brines | es |
dc.subject | Melting | es |
dc.subject | Freeze point | es |
dc.subject | Calorimetry | es |
dc.subject | Chaotropism | es |
dc.title | Can Halophilic and Psychrophilic Microorganisms Modify the Freezing/Melting Curve of Cold Salty Solutions? Implications for Mars Habitability | es |
dc.type | info:eu-repo/semantics/article | es |
dc.contributor.orcid | García Descalzo, L. [0000-0002-0083-6786] | - |
dc.contributor.orcid | Gil Lozano, C. [0000-0003-3500-2850] | - |
dc.contributor.orcid | Muñoz Iglesias, V. [0000-0002-1159-9093] | - |
dc.contributor.orcid | Prieto Ballesteros, O. [0000-0002-2278-1210] | - |
dc.contributor.orcid | Azua Bustos, A. [0000-0002-2278-1210] | - |
dc.contributor.orcid | Fairén, A. G. [0000-0002-2938-6010] | - |
dc.identifier.doi | 10.1089/ast.2019.2094 | - |
dc.identifier.e-issn | 1557-8070 | - |
dc.contributor.funder | European Research Council (ERC) | - |
dc.contributor.funder | Ministerio de Economía y Competitividad (MINECO) | - |
dc.contributor.funder | European Commission (EC) | - |
dc.contributor.funder | Agencia Estatal de Investigación (AEI) | - |
dc.description.peerreviewed | Peer review | es |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000781 | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003329 | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100000780 | - |
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 | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/818602 | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/307496 | - |
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