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Preservation of cyanobacterial biomarkers after Martian ground-based simulation Exposure

Baqué, M. and Verseux, C. and Böttger, Ute and Rabbow, Elke and Billi, D. and de Vera, Jean Pierre Paul (2014) Preservation of cyanobacterial biomarkers after Martian ground-based simulation Exposure. EANA 2014, 13.-16. Okt. 2014, Edinburgh, UK.

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Official URL: http://www.astrobiology.ac.uk/files/2013/03/Abstract-Book-EANA.pdf

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.

Item URL in elib:https://elib.dlr.de/94147/
Document Type:Conference or Workshop Item (Speech)
Title:Preservation of cyanobacterial biomarkers after Martian ground-based simulation Exposure
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Baqué, M.Department of Biology, University of Rome "Tor Vergata," Rome, ItalyUNSPECIFIED
Verseux, C.Department of Biology, University of Rome “Tor Vergata”, Rome, ItalyUNSPECIFIED
Böttger, UteUte.Boettger (at) dlr.deUNSPECIFIED
Rabbow, ElkeElke.Rabbow (at) dlr.dehttps://orcid.org/0000-0002-9301-2021
Billi, D.Department of Biology, University of Rome "Tor Vergata," Rome, ItalyUNSPECIFIED
de Vera, Jean Pierre Pauljean-pierre.devera (at) dlr.deUNSPECIFIED
Date:13 October 2014
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:cyanobacteria; biomarkers; Mars simulation; BIOMEX
Event Title:EANA 2014
Event Location:Edinburgh, UK
Event Type:international Conference
Event Dates:13.-16. Okt. 2014
Organizer:UK Centre of Astrobiology
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 Exploration des Sonnensystems
Location: Berlin-Adlershof , Köln-Porz
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Institute of Aerospace Medicine > Radiation Biology
Deposited By: de Vera, Dr. Jean Pierre Paul
Deposited On:06 Jan 2015 15:16
Last Modified:31 Jul 2019 19:51

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