In this work we investigated the ability of four extremophilic bacteria from Archaea and Bacteria domains to resist to space environment by exposing them to extreme conditions of temperature, UV radiation, desiccation coupled to low pressure generated in a Mars’ conditions simulator. All the investigated extremophilic strains (namely Sulfolobus solfataricus, Haloterrigena hispanica, Thermotoga neapolitana and Geobacillus thermantarcticus) showed a good resistance to the simulation of the temperature variation in the space; on the other hand irradiation with UV at 254 nm affected only slightly the growth of H. hispanica, G. thermantarcticus and S. solfataricus; finally exposition to Mars simulated condition showed that H. hispanica and G. thermantarcticus were resistant to desiccation and low pressure.
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This work has been implemented in the frame of the project PON01_01966 “Integrated agro-industrial chains with high energy efficiency for the development of eco-compatible processes of energy and biochemicals production from renewable sources and for the land valorisation” funded by “MIUR- Ministero dell’Istruzione, dell’Università e della Ricerca”.
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Mastascusa, V., Romano, I., Di Donato, P. et al. Extremophiles Survival to Simulated Space Conditions: An Astrobiology Model Study. Orig Life Evol Biosph 44, 231–237 (2014). https://doi.org/10.1007/s11084-014-9397-y
- Temperature resistance
- UV resistance
- Mars simulated conditions