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 UVat 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.
Extremophiles Survival to Simulated Space Conditions: An Astrobiology Model Study / V., Mastascusa; I., Romano; DI DONATO, Paola; A., Poli; V., Della Corte; A., Rotundi; E., Bussoletti; Quarto, Maria; Pugliese, Mariagabriella; B., Nicolaus. - In: ORIGINS OF LIFE AND EVOLUTION OF THE BIOSPHERE. - ISSN 0169-6149. - (2014), pp. 1-7. [10.1007/s11084-014-9397-y]
Extremophiles Survival to Simulated Space Conditions: An Astrobiology Model Study
QUARTO, MARIA;PUGLIESE, MARIAGABRIELLA;
2014
Abstract
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 UVat 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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
