elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Life beyond Earth: the antarctic black fungus in planetary simulations

Selbmann, Laura and Pacelli, Claudia and Zucconi, Laura and Fujimori, Akira and Moeller, Ralf and Onofri, Silvano (2018) Life beyond Earth: the antarctic black fungus in planetary simulations. In: EANA 2018 - Abstractbook. EANA 2018, 24-28 September 2018, Berlin, Germany.

[img] PDF
67kB

Official URL: http://www.eana-net.eu/index.php?page=Conferences/EANA2018

Abstract

The cryptoendolithic black fungus Cryomyces antarcticus inhabits the ice-free area of the Antarctic McMurdo Dry Valleys, one of the best terrestrial analogue environment for Mars. There, conditions on rock surface are often incompatible with life; hence, microbes develop within porous rocks as last chance for survival. The almost complete isolation over a timescale of evolutionary significance led to the evolution of unique, extremely adapted and resistant, genotypes. C. antarcticus is particularly skilled in stress tolerance being able to tolerate injuries well beyond the harsh conditions of its natural environment. Because of its uncommon resistance, the fungus has been chosen as eukaryotic model for astrobiological studies to test the endurance of eukaryotic cells to space conditions. In the experiment here reported, the fungus C. antarcticus was exposed, in the frame of the STARLIFE irradiation campaign, to different types and qualities of ionizing radiation with different linear energy transfer values (0.2 to 200 keV/µm). Irradiation with up to 1 kGy of accelerated He, Ar and Fe ions, and 55.57 kGy of gamma rays (60Cobalt). Single gene PCR, RAPD fingerprinting, qPCR and PMA coupled with qPCR analyses reveal minimal damage to DNA or plasma membranes induced by the treatments. This experiments further confirm the stunning stress tolerance of the fungus and its high relevance in astrobiological investigations, including the search for life on Mars, the reliability of the Lithopanspermia theory, and the estimation of planetary contamination risks

Item URL in elib:https://elib.dlr.de/124509/
Document Type:Conference or Workshop Item (Poster)
Title:Life beyond Earth: the antarctic black fungus in planetary simulations
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Selbmann, LauraUniversity of Tuscia, Department of Ecological and Biological Sciences (DEB), Viterbo, ItalyUNSPECIFIED
Pacelli, ClaudiaUniversity of Tuscia, Department of Ecological and Biological Sciences (DEB), Viterbo, ItalyUNSPECIFIED
Zucconi, LauraUniversity of Tuscia, Department of Ecological and Biological Sciences (DEB), Viterbo, ItalyUNSPECIFIED
Fujimori, AkiraMolecular and Cellular Radiation Biology Team, Department of Basic Medical Sciences for Radiation Damages, National Institute of Radiological Sciences (NIRS), Chiba, JapanUNSPECIFIED
Moeller, RalfRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; ralf.moeller (at) dlr.dehttps://orcid.org/0000-0002-2371-0676
Onofri, SilvanoUniversity of Tuscia, Department of Ecological and Biological Sciences (DEB), Viterbo, ItalyUNSPECIFIED
Date:24 September 2018
Journal or Publication Title:EANA 2018 - Abstractbook
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:STARLIFE irradiation campaign, antarctic black fungus, planetary simulations
Event Title:EANA 2018
Event Location:Berlin, Germany
Event Type:international Conference
Event Dates:24-28 September 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Strahlenbiologie
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:10 Dec 2018 15:56
Last Modified:31 Jul 2019 20:22

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.