NDLI: Detection of Macromolecules in Desert Cyanobacteria Mixed with a Lunar Mineral Analogue After Space Simulations

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Introduction to the Special Collection of Papers from EANA 2013: The 13th European Workshop on Astrobiology (“Through Cosmic Dust to DNA”) : 22-25 July 2013, Szczecin, Poland

Organic Compounds in Star Forming Regions

Organic Molecules in Translucent Interstellar Clouds

The Carrington Solar Flares of 1859: Consequences on Life

Search for the Most ‘primitive’ Membranes and Their Reinforcers: A Review of the Polyprenyl Phosphates Theory

Detection of Macromolecules in Desert Cyanobacteria Mixed with a Lunar Mineral Analogue After Space Simulations

Characterization of Halophilic Bacterial Communities in Turda Salt Mine (Romania)

Extremophiles Survival to Simulated Space Conditions: An Astrobiology Model Study

Origin and Stability of Exomoon Atmospheres: Implications for Habitability

A Grand Introduction to the Biomineral World : The Great Courses®: The Origin and Evolution of Earth: From the Big Bang to the Future of Human Existence, DVD Course, 2013, by Professor Robert M. Hazen, of George Mason University in Virginia

Erratum to: Papers from EANA 2013

Origins of Life and Evolution of Biospheres : Volume 44, Issue 2, April 2014

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Origins of Life and Evolution of Biospheres : Volume 43

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Origins of Life and Evolution of Biospheres : Volume 41

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Origins of Life and Evolution of Biospheres : Volume 27

Detection of Macromolecules in Desert Cyanobacteria Mixed with a Lunar Mineral Analogue After Space Simulations

Content Provider	Springer Nature Link
Author	Baqué, Mickael Verseux, Cyprien Rabbow, Elke Vera, Jean Pierre Paul Billi, Daniela
Copyright Year	2014
Abstract	In the context of future exposure missions in Low Earth Orbit and possibly on the Moon, two desert strains of the cyanobacterium Chroococcidiopsis, strains CCMEE 029 and 057, mixed or not with a lunar mineral analogue, were exposed to fractionated fluencies of UVC and polychromatic UV (200–400 nm) and to space vacuum. These experiments were carried out within the framework of the BIOMEX (BIOlogy and Mars EXperiment) project, which aims at broadening our knowledge of mineral-microorganism interaction and the stability/degradation of their macromolecules when exposed to space and simulated Martian conditions. The presence of mineral analogues provided a protective effect, preserving survivability and integrity of DNA and photosynthetic pigments, as revealed by testing colony-forming abilities, performing PCR-based assays and using confocal laser scanning microscopy. In particular, DNA and pigments were still detectable after 500 kJ/m$^{2}$ of polychromatic UV and space vacuum (10$^{−4}$ Pa), corresponding to conditions expected during one-year exposure in Low Earth Orbit on board the EXPOSE-R2 platform in the presence of 0.1 % Neutral Density (ND) filter. After exposure to high UV fluencies (800 MJ/m$^{2}$) in the presence of minerals, however, altered fluorescence emission spectrum of the photosynthetic pigments were detected, whereas DNA was still amplified by PCR. The present paper considers the implications of such findings for the detection of biosignatures in extraterrestrial conditions and for putative future lunar missions.
Starting Page	209
Ending Page	221
Page Count	13
File Format	PDF
ISSN	01696149
Journal	Origins of Life and Evolution of Biospheres
Volume Number	44
Issue Number	3
e-ISSN	15730875
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-10-30
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Astrobiology Extreme environments Expose-R2 Biosignatures Lunar regolith Life Sciences Astrophysics and Astroparticles Earth Sciences Astronomy, Observations and Techniques Biochemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Ecology, Evolution, Behavior and Systematics Space and Planetary Science

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ASTROBIOLOGY Detection of Macromolecules in Desert Cyanobacteria Mixed with a Lunar Mineral Analogue After Space Simulations (2014)

Preservation of Biomarkers from Cyanobacteria Mixed with MarsLike Regolith Under Simulated Martian Atmosphere and UV Flux

Detection of Macromolecules in Desert Cyanobacteria Mixed with a Lunar Mineral Analogue After Space Simulations

Biosignatures for Astrobiology

Characterisation of Growth and Ultrastructural Effects of the Xanthoria elegans Photobiont After 1.5 Years of Space Exposure on the International Space Station

EXPOSE, an Astrobiological Exposure Facility on the International Space Station - from Proposal to Flight

Lunar Palaeoregolith Deposits as Recorders of the Galactic Environment of the Solar System and Implications for Astrobiology

Lunar Beagle and Lunar Astrobiology

Detection of macromolecules in desert cyanobacteria mixed with a lunar mineral analogue after space simulations.

Detection of Macromolecules in Desert Cyanobacteria Mixed with a Lunar Mineral Analogue After Space Simulations

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