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Responses of the Black Fungus Cryomyces antarcticus to Simulated Mars and Space Conditions on Rock Analogues

Pacelli, C. and Selbmann, L. and Zucconi, L. and Coleine, C. and de Vera, J.-P. and Rabbow, Elke and Böttger, Ute and Dadachova, E. and Onofri, S. (2018) Responses of the Black Fungus Cryomyces antarcticus to Simulated Mars and Space Conditions on Rock Analogues. Astrobiology. Mary Ann Liebert Inc.. DOI: 10.1089/ast.2016.1631 ISSN 1531-1074

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Official URL: https://www.liebertpub.com/doi/abs/10.1089/ast.2016.1631

Abstract

The BIOMEX (BIOlogy and Mars Experiment) is part of the European Space Agency (ESA) space Mission EXPOSE-R2 in Low-Earth Orbit, devoted to exposing microorganisms for 1.5 years to space and simulated Mars conditions on the International Space Station. In preparing this mission, dried colonies of the Antarctic cryptoendolithic black fungus Cryomyces antarcticus CCFEE 515, grown on martian and lunar analog regolith pellets, were subjected to several ground-based preflight tests, Experiment Verification Tests, and Science Verification Tests (SVTs) that were performed to verify (i) the resistance of our model organism to space stressors when grown on extraterrestrial rock analogues and (ii) the possibility of detecting biomolecules as potential biosignatures. Here, the results of the SVTs, the last set of experiments, which were performed in ultraviolet radiation combined with simulated space vacuum or simulated martian conditions, are reported. The results demonstrate that C. antarcticus was able to tolerate the conditions of the SVT experiment, regardless of the substratum in which it was grown. DNA maintained high integrity after treatments and was confirmed as a possible biosignature; melanin, which was chosen to be a target for biosignature detection, was unambiguously detected by Raman spectroscopy.

Item URL in elib:https://elib.dlr.de/121366/
Document Type:Article
Title:Responses of the Black Fungus Cryomyces antarcticus to Simulated Mars and Space Conditions on Rock Analogues
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pacelli, C.Department of Ecological and Biological Sciences (DEB), University of Tuscia, 01100 Viterbo, Italy.UNSPECIFIED
Selbmann, L.Department of Ecological and Biological Sciences (DEB), University of Tuscia, 01100 Viterbo, Italy.UNSPECIFIED
Zucconi, L.Department of Ecological and Biological Sciences (DEB), University of Tuscia, 01100 Viterbo, Italy.UNSPECIFIED
Coleine, C.Department of Ecological and Biological Sciences (DEB) University of Tuscia, 01100 Viterbo, ItalyUNSPECIFIED
de Vera, J.-P.German Aerospace Center (DLR), Institute of Planetary Research, 12489 Berlin, Germany.https://orcid.org/0000-0002-9530-5821
Rabbow, ElkeRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; Elke.Rabbow (at) dlr.dehttps://orcid.org/0000-0002-9301-2021
Böttger, UteUte.Boettger (at) dlr.deUNSPECIFIED
Dadachova, E.College of Pharmacy and Nutrition, University of Saskatchewan, Saskatoon, Canada; ekaterina.dada-chova (at) usask.caUNSPECIFIED
Onofri, S.Department of Ecological and Biological Sciences (DEB), University of Tuscia, 01100 Viterbo, Italy.UNSPECIFIED
Date:1 August 2018
Journal or Publication Title:Astrobiology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.1089/ast.2016.1631
Publisher:Mary Ann Liebert Inc.
ISSN:1531-1074
Status:Published
Keywords:Astrobiology; radiation resistance; biosignatures; extremophilic microorganisms; Raman spectroscopy
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Planetary Evolution and Life
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Institute of Aerospace Medicine > Radiation Biology
Institute of Optical Sensor Systems
Deposited By: de Vera, Dr. Jean Pierre Paul
Deposited On:12 Sep 2018 10:22
Last Modified:06 Sep 2019 15:23

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