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Lichens, cyanobacteria and molds growing in humidity of simulated Martian atmosphere: Difference between revisions

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Lichens, cyanobacteria and molds growing in humidity of simulated Martian atmosphere (edit)

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→‎Lichens surviving in Mars surface conditions
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Most lichens do not survive prolonged exposure to Mars surface conditions. But an experiment simulating a Mars environment in a small chamber external to the ISS as part of [[EXPOSE#EXPOSE-E results|Expose-E]] in 2008-2009 showed that one lichen, Xanthoria elegans, retained a viability of 71% for the algae (photobiont) and 84% for the fungus (mycobiont) after 18 months inn Mars surface simulation conditions. Moreover, those surviving cells returned to 99% photosynthetic capabilities on return to Earth.
 
hisThis greatly exceeded the post flight viability of any of the other organisms tested in the experiment. This was an experiment without the day night temperature cycles of Mars and the lichens were kept in a desiccated state so it didn't test their ability to survive in niche habitats on Mars. T<ref name="Brandtde Vera2014">{{cite journal|url=http://elib.dlr.de/90411/1/Annette-Brandt-download.php.pdf|last1=Brandt|first1=Annette|last2=de Vera|first2=Jean-Pierre|last3=Onofri|first3=Silvano|last4=Ott|first4=Sieglinde|title=Viability of the lichen Xanthoria elegans and its symbionts after 18 months of space exposure and simulated Mars conditions on the ISS|journal=International Journal of Astrobiology|year=2014|pages=1–15|issn=1473-5504|doi=10.1017/S1473550414000214|volume=14|issue=3|bibcode=2015IJAsB..14..411B}}</ref>
 
==Lichens relying on 75% night time humidity to metabolize, photosynthesize, and develop new growth==
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