Enhanced Selenate Accumulation in Cupriavidus metallidurans CH34 Does Not Trigger a Detoxification Pathway

Laure Avoscan (1, 2) , Marie Carrière (1) , Olivier Proux (3, 4) , Geraldine Sarret (3) , Jeril Degrouard (5) , Jacques Covès (6) , Barbara Gouget (1)

1 LPS - Laboratoire Pierre Süe
2 MSE - Microbiologie du Sol et de l'Environnement
3 LGIT - Laboratoire de Géophysique Interne et Tectonophysique
4 ESRF - European Synchrotron Radiation Facility
5 DE - Développement et évolution
6 IBS - UMR 5075 - Institut de biologie structurale

Cupriavidus metallidurans CH34 cells grown under sulfate-limited conditions accumulated up to six times more selenate than cells grown in sulfate-rich medium. The products of selenate reduction detected by X-ray absorption spectroscopy, electron microscopy, and energy-dispersive X-ray analysis did not define this strain as being a good candidate for bioremediation of selenate-contaminated environments.

Keywords: selenate contamination; bioremediation; energy-dispersive X-ray analysis; electron microscopy

Domains: Life Sciences [q-bio]

Laure Avoscan, Marie Carrière, Olivier Proux, Geraldine Sarret, Jeril Degrouard, et al.. Enhanced Selenate Accumulation in Cupriavidus metallidurans CH34 Does Not Trigger a Detoxification Pathway. Applied and Environmental Microbiology, 2009, 75 (7), pp.2250-2252. ⟨10.1128/AEM.02452-08⟩. ⟨insu-00446599⟩