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Uranium Interaction with Two Multi-Resistant Environmental Bacteria: Cupriavidus metallidurans CH34 and Rhodopseudomonas palustris

Isabelle Llorens 1 Guillaume Untereiner 2 Danielle Jaillard 3 Barbara Gouget 4 Virginie Chapon 5, 6 Marie Carrière 7
1 NRS [?-2019] - Nanostructures et Rayonnement Synchrotron [?-2019]
MEM - Modélisation et Exploration des Matériaux : DRF/IRIG/MEM
2 LSDRM - Laboratoire Structure et Dynamique par Résonance Magnétique (LCF)
NIMBE UMR 3685 - Nanosciences et Innovation pour les Matériaux, la Biomédecine et l'Energie (ex SIS2M)
3 MET - Microscopie Électronique
PF I2BC - Département Plateforme
5 IPM - Interactions Protéine Métal
BIAM - Institut de Biosciences et Biotechnologies d'Aix-Marseille (ex-IBEB) : DRF/BIAM
7 LAN - Laboratoire Lésions des Acides Nucléiques
SCIB - UMR E3 - Service de Chimie Inorganique et Biologique : DSM/INAC/SCIB
Abstract : Depending on speciation, U environmental contamination may be spread through the environment or inversely restrained to a limited area. Induction of U precipitation via biogenic or non-biogenic processes would reduce the dissemination of U contamination. To this aim U oxidation/reduction processes triggered by bacteria are presently intensively studied. Using X-ray absorption analysis, we describe in the present article the ability of Cupriavidus metallidurans CH34 and Rhodopseudomonas palustris, highly resistant to a variety of metals and metalloids or to organic pollutants, to withstand high concentrations of U and to immobilize it either through biosorption or through reduction to non-uraninite U(IV)-phosphate or U(IV)-carboxylate compounds. These bacterial strains are thus good candidates for U bioremediation strategies, particularly in the context of multi-pollutant or mixed-waste contaminations. Citation: Llorens I, Untereiner G, Jaillard D, Gouget B, Chapon V, et al. (2012) Uranium Interaction with Two Multi-Resistant Environmental Bacteria: Cupriavidus metallidurans CH34 and Rhodopseudomonas palustris.
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Isabelle Llorens, Guillaume Untereiner, Danielle Jaillard, Barbara Gouget, Virginie Chapon, et al.. Uranium Interaction with Two Multi-Resistant Environmental Bacteria: Cupriavidus metallidurans CH34 and Rhodopseudomonas palustris. PLoS ONE, Public Library of Science, 2012, 7 (12), pp.e51783. ⟨10.1371/journal.pone.0051783⟩. ⟨hal-01560936⟩

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