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Raman spectroscopic study of the photoprotection of extremophilic microbes against ultraviolet radiation

Edwards, H.G.M. and Moeller, Ralf and Jorge Villar, S.E. and Horneck, Gerda and Stackebrandt, E. (2006) Raman spectroscopic study of the photoprotection of extremophilic microbes against ultraviolet radiation. International Journal of Astrobiology, 5, pp. 313-318. Cambridge University Press. DOI: doi:10.1017/S147355040600348X

Full text not available from this repository.

Abstract

Extremophiles use a range of pigments for protection against low-wavelength radiation in exposed terrestrial habitats and photoaccessory materials are synthesized for the effective harnessing of photosynthetically active radiation. Raman spectroscopy has been demonstrated to be a useful probe for information on the survival strategies employed by extremophilic bacteria through the identification of key biomolecular signatures of the suite of protective chemicals synthesized by the organisms in stressed environments. Raman spectroscopic analyses of Bacillus spp. spores, Bacillus atrophaeus (DSM 675: deep red) and Bacillus subtilis (DSM 5611: light grey and DSM 7264: dark grey), Deinococcus radiodurans (pink) and Natronomonas pharaonis (red), of visually different pigmentation showed the presence of different carotenoids and other protectant biomolecules, which assist microorganisms against UVA radiation. The implications for the survival of extremophilic microbes in extraterrestrial habitats and for the detection of the protectant biomolecules by remote, robotic Raman spectroscopic instrumentation in an astrobiological search for life context are discussed.

Item URL in elib:https://elib.dlr.de/53879/
Document Type:Article
Title:Raman spectroscopic study of the photoprotection of extremophilic microbes against ultraviolet radiation
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Edwards, H.G.M.Chemical and Forensic Sciences, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK e-mail: h.g.m.edwards (at) bradford.ac.ukUNSPECIFIED
Moeller, RalfGerman Aerospace Center, Institute of Aerospace Medicine, Radiation Biology Division, Cologne, Germany ;German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyUNSPECIFIED
Jorge Villar, S.E.Chemical and Forensic Sciences, School of Life Sciences, University of Bradford, Bradford BD7 1DP, UK; Area Geodinamica Interna, Facultad de Humanides y Educacion, Universidad de Burgos, Calle Villadiego s/n, 09001 Burgos, Spain e-mail: susanajorgevillar (at) UNSPECIFIED
Horneck, GerdaUNSPECIFIEDUNSPECIFIED
Stackebrandt, E.German Collection of Microorganisms and Cell Cultures, Braunschweig, GermanyUNSPECIFIED
Date:2006
Journal or Publication Title:International Journal of Astrobiology
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:5
DOI :doi:10.1017/S147355040600348X
Page Range:pp. 313-318
Publisher:Cambridge University Press
Status:Published
Keywords:astrobiology, Bacillus atrophaeus, Bacillus subtiis, Deinococcus radiodurans, Natronomonas pharaonis, Raman spectroscopy, carotenoids; endospores.
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Strahlenbiologie (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:14 Apr 2008
Last Modified:27 Apr 2009 14:54

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