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Impact of UV C exposure on the water retention of the lichen Buellia frigida

Jänchen, J. and Herzog, T.H. and Meeßen, J. and Ott, S. and Feist, M. and de Vera, Jean Pierre Paul (2014) Impact of UV C exposure on the water retention of the lichen Buellia frigida. LPSC 2014, 17.-21. Mar. 2014, The Woodlands, Texas, USA.

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Official URL: http://www.hou.usra.edu/meetings/lpsc2014/pdf/1260.pdf


New results on extremophiles and observations of Mars missions regarding the detailed mineralogy, the occurrence of water in the equatorial region of Mars [1-3], new announcements of MSL findings and their implications for the surface condi-tions at Gale crater [4, 5] as well as measurements of the Mars surface radiation environment [6] fuel the debate about possible developments of life on Mars. Based on previous studies [7-8] we examined water vapor interaction and water-bearing properties of B. frigida before and after UVC irradiation. The meas-urements have been partially conducted after simula-tion of environmental conditions which are supposed to be Mars-like. Lichens are symbiotic organisms that are able to colonize a broad range of extreme habitats and, therefore, represent useful model systems in as-trobiological research. Our aim is to contribute to an improved under-standing of extremophiles under exobiological aspects within the frame of BIOMEX (Biology and Mars Ex-periment) at the ISS, in respect to irradiation effects on water retention properties. The results may also sup-port data evaluation of in-situ missions such as MSL and ExoMars. References: [1] Feldmann W.C. et al. (2004) JGR 109 E 09006. [2] Bibring, J.-P. et al. Science 307, 1576-1581. [3] Poulet F. et al. (2005) Nature 438, 623- 627. [4] Vaniman D.T. et al. (2013) Science DOI: 10.1126/science.1243480. [5] Ming D.W. et al. (2013) Science DOI: 10.1126/science.1245267 [6] Hassler D.M. et al. (2013) Science DOI: 10.1126/science. 1244797.[7] Jänchen J. et al. (2006) Icarus, 180, 353- 358. [8] Jänchen J. et al. (2013) 44th LPSC Abstract No. 1504.

Item URL in elib:https://elib.dlr.de/94155/
Document Type:Conference or Workshop Item (Poster)
Title:Impact of UV C exposure on the water retention of the lichen Buellia frigida
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jänchen, J.TH Wildau, Technical University of Applied Sciences, Wildau, GermanyUNSPECIFIED
Herzog, T.H.TH Wildau, Technical University of Applied Sciences, Wildau, GermanyUNSPECIFIED
Meeßen, J.Institute of Botany, Heinrich-Heine-Universität, DüsseldorfUNSPECIFIED
Ott, S.Institute of Botany, Heinrich-Heine-University, Universitätsstr.1, 40225 Düsseldorf, GermanyUNSPECIFIED
Feist, M.Humboldt University Berlin, Institute of Chemistry, Brook-Taylor-Str. 2, 12489 Berlin, GermanyUNSPECIFIED
de Vera, Jean Pierre Pauljean-pierre.devera (at) dlr.deUNSPECIFIED
Date:17 March 2014
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:UV C radiation; water retention; lichens; BIOMEX; Mars
Event Title:LPSC 2014
Event Location:The Woodlands, Texas, USA
Event Type:international Conference
Event Dates:17.-21. Mar. 2014
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
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Deposited By: de Vera, Dr. Jean Pierre Paul
Deposited On:07 Jan 2015 08:46
Last Modified:31 Jul 2019 19:51

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