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

BOSS CYANO EXPERIMENT ON THE EXPOSE-R2 SPACE MISSION: ENHANCED SURVIVAL OF CHROOCOCCIDIOPSIS BIOFILMS TO SPACE AND SIMULATED MARS CONDITIONS COMPARED TO PLANKTONIC COUNTERPARTS

Billi, Daniela and Verseux, Cyprien and Staibano, Clelia and Rabbow, Elke and Rettberg, Petra (2017) BOSS CYANO EXPERIMENT ON THE EXPOSE-R2 SPACE MISSION: ENHANCED SURVIVAL OF CHROOCOCCIDIOPSIS BIOFILMS TO SPACE AND SIMULATED MARS CONDITIONS COMPARED TO PLANKTONIC COUNTERPARTS. 68th International Astronautical Congress 2017, 25.-29. September 2017, Adelaide, Australia.

[img] PDF
37kB

Abstract

The Biofilm Organisms Surfing Space (BOSS) experiment is part of the EXPOSE-R2 space mission. In one part of the BOSS experiment three Chroococcidiopsis desert stains (CCMEE 057, CCMEE 029 and CCMEE 064), were exposed to Low Earth Orbit (LEO) in the dried state either as biofilms or multilayered planktonic samples. Cells were exposed for 16 months to space and Mars-like conditions outside the International Space Station. Exposure parameters included temperature variations, ionizing radiation, vacuum or simulated Martian atmosphere and pressure, and Mars-like solar UV irradiation. In parallel to exposure in LEO, replicates of the experiment were performed on the ground: Some were kept in the dark under ambient conditions, while others were exposed to stressors (extreme temperature cycles, Mars-simulated atmosphere or vacuum, and UV ux) mimicking those undergone during the EXPOSE-R2 space mission, based on data recorded in- ight. Cyanobacteria were analyzed post- ight using confocal microscopy, PCR-based assays and colony forming ability tests. Results are consistent with previous ground-based simulations of the mission1,2 and demonstrate an overall higher resistance of biofilms when compared to planktonic as suggested by their increased viability and lower amounts of DNA damage. 1. Baqué, M., Scalzi, G., Rabbow, E., Rettberg, P. Billi, D. Biofilm and Planktonic Lifestyles Differently Support the Resistance of the Desert Cyanobacterium Chroococcidiopsis Under Space and Martian Simulations. Orig. life Evol. Biosph. 43, 377-389 (2013). 2. Baqué, M., de Vera, J.-P., Rettberg, P. Billi, D. The BOSS and BIOMEX space experiments on the EXPOSE-R2 mission: Endurance of the desert cyanobacterium Chroococcidiopsis under simulated space vacuum, Martian atmosphere, UVC radiation and temperature extremes. Acta Astronaut. 91, 180-186 (2013).

Item URL in elib:https://elib.dlr.de/118587/
Document Type:Conference or Workshop Item (Speech)
Title:BOSS CYANO EXPERIMENT ON THE EXPOSE-R2 SPACE MISSION: ENHANCED SURVIVAL OF CHROOCOCCIDIOPSIS BIOFILMS TO SPACE AND SIMULATED MARS CONDITIONS COMPARED TO PLANKTONIC COUNTERPARTS
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Billi, DanielaUniversity of Rome "Tor Vergata", Italy, billi (at) uniroma2.itUNSPECIFIED
Verseux, CyprienUniversity of Rome "Tor Vergata", Italy, cyprien.verseux (at) gmail.comUNSPECIFIED
Staibano, CleliaUniversity of Rome Tor Vergata, Italy, clelia.staibano (at) libero.itUNSPECIFIED
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
Rettberg, PetraRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; petra.rettberg (at) dlr.dehttps://orcid.org/0000-0003-4439-2395
Date:2017
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:EXPOSE-R2, Space Mission, Mars
Event Title:68th International Astronautical Congress 2017
Event Location:Adelaide, Australia
Event Type:international Conference
Event Dates:25.-29. September 2017
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:06 Feb 2018 12:47
Last Modified:31 Jul 2019 20:16

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.