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Mineralization and Preservation of an extremotolerant Bacterium Isolated from an Early Mars Analog Environment

Gaboyer, F. ; Le Milbeau, C. ; Bohmeier, M. ; Schwendner, P. ; Vannier, P. ; Beblo-Vranesevic, K. ; Rabbow, E. ; Foucher, F. ; Gautret, P. ; Guégan, R. ; Richard, A. ; Sauldubois, A. ; Richmann, P. ; Perras, A. K. ; Moissl-Eichinger, C. ; Cockell, C. S. ; Rettberg, P. ; Marteinsson, ; Monaghan, E. ; Ehrenfreund, P. ; Garcia-Descalzo, L. ; Gomez, F. ; Malki, M. ; Amils, R. ; Cabezas, P. ; Walter, N. ; Westall, F.



Abstract

The artificial mineralization of a polyresistant bacterial strain isolated from an acidic, oligotrophic lake was carried out to better understand microbial (i) early mineralization and (ii) potential for further fossilisation. Mineralization was conducted in mineral matrixes commonly found on Mars and Early-Earth, silica and gypsum, for 6 months. Samples were analyzed using microbiological ...

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