Understanding the radiosensitivity of the bacterium Rhodospirillum rubrum needed for wastewater purification in space (Apprenticeship, Master)
| Auteur: | Studiecentrum voor kernenergie |
| Tags: | Engels Hoger onderwijs Biotechnologie/Industriële microbiologie Binnenlands nieuws Milieu Bacteriën |
| Bron: | http://www.sckcen.be/nl/yop/view/204 
Melding defecte link. |
Inleiding In the view of long term space mission, e.g. a trip to Mars, the European Space Agency together with universities and independent organizations including SCK•CEN, initiated the development of a closed bioregenerative life support system to produce food and recycle the waste for the space crew member. The so-called MELiSSA (Micro-Ecological Life Support System Alternative) loop is basically the engineered reproduction of a lake ecosystem where 4 bioreactors inhabited by either microorganisms or higher plants will one after the other achieved a particular step in all the biotransformation loop (http://ecls.esa.int/ecls/?p=melissa). In this system, the purple bacterium Rhodospirillum rubrum is mainly involved in the carbon transformation step under anaerobic conditions and using light as energy source in the compartment II. Previous work in our laboratory featured the irradiation of R. rubrum strain S1H to various doses of gamma irradiation. Survival curves were determined and, surprisingly, the bacterium showed a differential survival rate depending on the culture medium used especially for a dose of 100 Gy.
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