Loading…

Spectroscopic investigation of ionizing-radiation tolerance of a Chlorophyceae green micro-alga

Micro-organisms living in extreme environments are captivating in the peculiar survival processes they have developed. Deinococcus radiodurans is probably the most famous radio-resistant bacteria. Similarly, a specific ecosystem has grown in a research reactor storage pool, and has selected organism...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Condensed matter 2008-03, Vol.20 (10), p.104216-104216 (7)
Main Authors: Farhi, E, Rivasseau, C, Gromova, M, Compagnon, E, Marzloff, V, Ollivier, J, Boisson, A M, Bligny, R, Natali, F, Russo, D, Couté, A
Format: Article
Language:English
Subjects:
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Micro-organisms living in extreme environments are captivating in the peculiar survival processes they have developed. Deinococcus radiodurans is probably the most famous radio-resistant bacteria. Similarly, a specific ecosystem has grown in a research reactor storage pool, and has selected organisms which may sustain radiative stress. An original green micro-alga which was never studied for its high tolerance to radiations has been isolated. It is the only autotrophic eukaryote that develops in this pool, although contamination possibilities coming from outside are not unusual. Studying what could explain this irradiation tolerance is consequently very interesting. An integrative study of the effects of irradiation on the micro-algae physiology, metabolism, internal dynamics, and genomics was initiated. In the work presented here, micro-algae were stressed with irradiation doses up to 20 kGy (2 Mrad), and studied by means of nuclear magnetic resonance, looking for modifications in the metabolism, and on the IN13 neutron backscattering instrument at the ILL, looking for both dynamics and structural macromolecular changes in the cells.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/20/10/104216