Exploring the microbial biotransformation of extraterrestrial material on nanometer scale
Autor: | Milojevic, Tetyana, Kölbl, Denise, Ferrière, Ludovic, Albu, Mihaela, Kish, Adrienne, Flemming, Roberta L., Koeberl, Christian, Blazevic, Amir, Zebec, Ziga, Rittmann, Simon K.-M. R., Schleper, Christa, Pignitter, Marc, Somoza, Veronika, Schimak, Mario P., Rupert, Alexandra N. |
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Přispěvatelé: | University of Vienna [Vienna], Natural History Museum [Vienna] (NHM), Graz Centre for Electron Microscopy, Molécules de Communication et Adaptation des Micro-organismes (MCAM), Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS), Department of Earth Sciences, University of Western Ontario, University of Western Ontario (UWO), Department of Lithospheric Research [Wien], Universität Wien, Archaea Biology and Ecogenomics Group, Max Planck Institute for Marine Microbiology, Max-Planck-Gesellschaft |
Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
Cations
Divalent Spectrum Analysis lcsh:R lcsh:Medicine Meteoroids Astrobiology Microbiology [SDV.MP.BAC]Life Sciences [q-bio]/Microbiology and Parasitology/Bacteriology Article [SDV.MP]Life Sciences [q-bio]/Microbiology and Parasitology Microscopy Electron Transmission Nickel Sulfolobaceae lcsh:Q lcsh:Science Oxidation-Reduction Biotransformation ComputingMilieux_MISCELLANEOUS [SDU.STU.MI]Sciences of the Universe [physics]/Earth Sciences/Mineralogy |
Zdroj: | Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019) Scientific Reports Scientific Reports, Nature Publishing Group, 2019, 9 (1), ⟨10.1038/s41598-019-54482-7⟩ |
ISSN: | 2045-2322 |
DOI: | 10.1038/s41598-019-54482-7 |
Popis: | Exploration of microbial-meteorite redox interactions highlights the possibility of bioprocessing of extraterrestrial metal resources and reveals specific microbial fingerprints left on extraterrestrial material. In the present study, we provide our observations on a microbial-meteorite nanoscale interface of the metal respiring thermoacidophile Metallosphaera sedula. M. sedula colonizes the stony meteorite Northwest Africa 1172 (NWA 1172; an H5 ordinary chondrite) and releases free soluble metals, with Ni ions as the most solubilized. We show the redox route of Ni ions, originating from the metallic Ni° of the meteorite grains and leading to released soluble Ni2+. Nanoscale resolution ultrastructural studies of meteorite grown M. sedula coupled to electron energy loss spectroscopy (EELS) points to the redox processing of Fe-bearing meteorite material. Our investigations validate the ability of M. sedula to perform the biotransformation of meteorite minerals, unravel microbial fingerprints left on meteorite material, and provide the next step towards an understanding of meteorite biogeochemistry. Our findings will serve in defining mineralogical and morphological criteria for the identification of metal-containing microfossils. |
Databáze: | OpenAIRE |
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