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.
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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/ | ||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||
Title: | Raman spectroscopic study of the photoprotection of extremophilic microbes against ultraviolet radiation | ||||||||||||||||||||||||
Authors: |
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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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