Cyanobacteria from Extreme Deserts to Space
Daniela Billi, Mickael Baqué, Heather D. Smith, Christopher P. McKay
DOI: 10.4236/aim.2013.36A010   PDF    HTML   XML   6,135 Downloads   10,617 Views   Citations


The development of space technology makes the exposure of organisms and molecules to the space environment possible by using the ESA Biopan and Expose facilities and NASA nanosatellites; the aim is to decipher the origin, evolution and distribution of life on Earth and in the Universe. The study of microbial communities thriving in lithic habitats in cold and hot deserts is gathering appreciation when dealing with the limits of life as we know it, the identification of biosignatures for searching life beyond Earth and the validation of the (litho)-Panspermia theory. Cyanobacteria of the genus Chroococcidiopsis dominate rock-dwelling communities in extreme deserts that are considered terrestrial analogues of Mars, like the Dry Valleys in Antarctica, the Atacama Desert in Chile or the Mojave Desert in California. The extraordinary tolerance of these cyanobacteria towards desiccation, ionizing and UV radiation makes them suitable experimental strains which have been already used in astrobiological experiments and already selected for future space missions. Evidence gained so far supports the use of desert cyanobacteria to develop life support systems and insitu resource utilization for the human space exploration and settlement on the Moon or Mars.

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D. Billi, M. Baqué, H. Smith and C. McKay, "Cyanobacteria from Extreme Deserts to Space," Advances in Microbiology, Vol. 3 No. 6A, 2013, pp. 80-86. doi: 10.4236/aim.2013.36A010.

Conflicts of Interest

The authors declare no conflicts of interest.


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