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Metallosphaera sedula on a Mission – mimicking Mars in frames of the Tanpopo 4 mission

Kölbl, Denise and Rabbow, Elke and Rettberg, Petra and Beblo-Vranesevic, Kristina and Parpart, André and Mita, Hajime and Yamagishi, Akihiko and Milojevic, Tetyana (2022) Metallosphaera sedula on a Mission – mimicking Mars in frames of the Tanpopo 4 mission. In: EPSC Abstracts, 16, EPSC2022-465. Europlanet Science Congress 2022 - EPSC2022, 18 – 23 September 2022, Palacio de Congresos de Granada, Spain.

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Official URL: https://meetingorganizer.copernicus.org/EPSC2022/EPSC2022-465.html?pdf

Abstract

With future long-term space exploration and life detection missions on Mars, understanding the microbial survival beyond Earth as well as the identification of past life traces on other planetary bodies becomes increasingly important. The series of the Tanpopo space mission experiments target a long-term exposure (one to three years) of microorganisms on the KIBO Module of the International Space Station (ISS) in the low Earth orbit (LEO) (Kawaguchi et al., 2020; Ott et al., 2020). In the search for possible past and/or present microbial life on Mars, metallophilic archaeal species are of a special interest due to their inherent extraordinary characteristics. Chemolithotrophic archaea (e.g., from the order Sulfolobales) employ a number of ancient metabolic pathways to extract energy from diverse inorganic electron donors and acceptors. Metallosphaera sedula, an iron- and sulfur-oxidizing chemolithotrophic archaeon, which flourishes under hot and acidic conditions (optimal growth at 74°C and pH 2.0), was cultivated on genuine extraterrestrial minerals (Milojevic et al., 2019; Milojevic et al., 2021) as well as synthetic Martian materials (Kölbl et al., 2017). In all cases, M. sedula cells were able to utilize given mineral materials as the sole energy source for cellular growth and proliferation. During the growth of M. sedula cells on these materials, a natural mineral impregnation and encrustation of microbial cells was achieved, followed by their preservation under the conditions of desiccation (Kölbl et al. 2020). Our studies indicate that this archaeon, when impregnated and encrusted with minerals, withstand long-term desiccation and can be even recovered from the dried samples to the liquid cultures (Kölbl et al., 2020). The achieved preservation of desiccated M. sedula cells facilitated our further survivability studies with this desiccated microorganism under simulated Mars-like environmental conditions and during the Tanpopo-4 space exposure experiment. [...]

Item URL in elib:https://elib.dlr.de/189247/
Document Type:Conference or Workshop Item (Speech)
Title:Metallosphaera sedula on a Mission – mimicking Mars in frames of the Tanpopo 4 mission
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Kölbl, DeniseCNRS-Centre de Biophysique Moléculaire, University of Orléans, Orléans, FranceUNSPECIFIED
Rabbow, ElkeRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; Elke.Rabbow (at) dlr.de.https://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
Beblo-Vranesevic, KristinaRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; kristina.beblo (at) dlr.dehttps://orcid.org/0000-0002-4834-7121
Parpart, AndréRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, GermanyUNSPECIFIED
Mita, HajimeDepartment of Life, Environment and Applied Chemistry, Fukuoka Institute of Technology, Fukuoka, JapanUNSPECIFIED
Yamagishi, AkihikoDepartment of Life Science, Tokyo Institute of Technology, Yokohama, JapanUNSPECIFIED
Milojevic, TetyanaCNRS-Centre de Biophysique Moléculaire, University of Orléans, Orléans, FranceUNSPECIFIED
Date:September 2022
Journal or Publication Title:EPSC Abstracts
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:16
Page Range:EPSC2022-465
Status:Published
Keywords:Astrobiology, Mars, space exploration, microbial survival, Space Simulation facilities (DLR, Cologne), Tanpopo 4 mission
Event Title:Europlanet Science Congress 2022 - EPSC2022
Event Location:Palacio de Congresos de Granada, Spain
Event Type:international Conference
Event Dates:18 – 23 September 2022
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 - Research under Space Conditions
DLR - Research theme (Project):R - Project ISS LIFE 2.0
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:10 Nov 2022 12:03
Last Modified:10 Nov 2022 15:54

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