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- W892368397 abstract "The space mission EXPOSE-R2 successfully launched on the 24th of July 2014 to the International Space Station is carrying the BIOMEX (BIOlogy and Mars EXperiment) experiment aimed at investigating the endurance of extremophiles and stability of biomolecules. Among the selected extremophiles there are cyanobacteria of the genus Chroococcidiopsis well known for their relevance in astrobiology tasks dealing with the search for life on Mars and for future space applications. During the ground-based simulations, Chroococcidiopsis cells mixed with two Martian mineral analogues were exposed to high UV irradiation combined or without Martian simulated atmosphere. Survival and preservation of potential biomarkers such as photosynthetic, photoprotective pigments or DNA were assessed by colony forming ability, Confocal Laser Scanning Microscopy, Raman spectroscopy and PCR-based assays. DNA and photoprotective pigments (namely carotenoids) showed high preservation potentials and were detectable after simulations of the real space exposure mission (500MJ/m² of full UV 200-400nm irradiation and Martian simulated atmosphere). Data gathered during the ground-based simulations will contribute to interpret future results from space experiments and guide our search for life on Mars and other bodies of interest." @default.
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- W892368397 date "2014-10-13" @default.
- W892368397 modified "2023-09-23" @default.
- W892368397 title "Preservation of cyanobacterial biomarkers after Martian ground-based simulation Exposure" @default.
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