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Detection of new biohints on lichens with Raman spectroscopy after space- and Mars like conditions exposure: Mission Ground Reference (MGR) samples

Lopez Ramirez, M.R. and Sancho, L.G and de Vera, Jean Pierre Paul and Baqué, Mickael and Böttger, Ute and Rabbow, Elke and Martinez-Frias, J. and de La Torre Noetzel, R. (2021) Detection of new biohints on lichens with Raman spectroscopy after space- and Mars like conditions exposure: Mission Ground Reference (MGR) samples. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 261, p. 120046. Elsevier. doi: 10.1016/j.saa.2021.120046. ISSN 1386-1425.

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Official URL: https://www.sciencedirect.com/science/article/abs/pii/S1386142521006235


The extremophile lichen Circinaria gyrosa (C. gyrosa) is one of the selected species within the BIOMEX (Biology and Mars Experiment) experiment. Here we present the Raman study of a biohint found in this lichen, called whewellite (calcium oxalate monohydrate), and other organic compounds and mineral products of the biological activity of the astrobiologically relevant model system C. gyrosa. Samples were exposed to space- and simulated Mars-like conditions during the EXPOSE-R2 mission parallel ground reference experiment MGR performed at the space- and planetary chambers of DLR-Cologne to study Mars' habitability and resistance to real space conditions. In this work, we complete the information of natural C. gyrosa about the process of diagenesis by the identification of carbonate crystals in the inner medulla together with the biomineral whewellite. The analysis by Raman spectroscopy of simulated Space and Mars exposed samples confirm alterations and damages of the photobiont part of the lichen and changes related to the molecular structure of whewellite. The conclusions of this work will be important to understand what are the effects to consider when biological systems are exposed to space or Mars-like conditions and to expand our knowledge of how life survives in most extreme conditions that is a prerequisite in future planetary exploration projects.

Item URL in elib:https://elib.dlr.de/142679/
Document Type:Article
Title:Detection of new biohints on lichens with Raman spectroscopy after space- and Mars like conditions exposure: Mission Ground Reference (MGR) samples
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lopez Ramirez, M.R.UMA, Dto. Química-Fisica, Málaga, SpainUNSPECIFIED
Sancho, L.GUCM, Univ. Complutense Madrid, SpainUNSPECIFIED
Baqué, MickaelUNSPECIFIEDhttps://orcid.org/0000-0002-6696-6030
Rabbow, ElkeUNSPECIFIEDhttps://orcid.org/0000-0002-9301-2021
Martinez-Frias, J.IGEO-CSIC, Univ. Complutense Madrid, Madrid, SpainUNSPECIFIED
de La Torre Noetzel, R.Instituto Nacional de Técnica Aeroespacial (INTA), Madrid, Spain.UNSPECIFIED
Date:15 November 2021
Journal or Publication Title:Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:p. 120046
Keywords:Circinaria gyrosa; biohint; Mars environment; extremotolerance; lichens; Raman spectroscopy
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Planetary Evolution and Life, R - Project ISS LIFE 2.0
Location: Berlin-Adlershof , Köln-Porz
Institutes and Institutions:Institute of Planetary Research > Planetary Laboratories
Institute of Optical Sensor Systems > Space Instruments
Institute of Aerospace Medicine > Radiation Biology
Space Operations and Astronaut Training > User center for space experiments (MUSC)
Deposited By: Baqué, Dr. Mickael
Deposited On:14 Jun 2021 16:46
Last Modified:16 Dec 2021 15:21

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