嗜热细菌铁还原热土杆菌生长过程中铀（VI）磷酸盐的还原
Reduction of uranium(VI) phosphate during growth of the thermophilic bacterium Thermoterrabacterium ferrireducens.
作者信息
Khijniak T V, Slobodkin A I, Coker V, Renshaw J C, Livens F R, Bonch-Osmolovskaya E A, Birkeland N-K, Medvedeva-Lyalikova N N, Lloyd J R
机构信息
The Williamson Research Centre for Molecular Environmental Science and The School of Earth, Atmospheric and Environmental Sciences, The University of Manchester, Manchester M13 9PL, United Kingdom.
出版信息
Appl Environ Microbiol. 2005 Oct;71(10):6423-6. doi: 10.1128/AEM.71.10.6423-6426.2005.
Abstract
The thermophilic, gram-positive bacterium Thermoterrabacterium ferrireducens coupled organotrophic growth to the reduction of sparingly soluble U(VI) phosphate. X-ray powder diffraction and X-ray absorption spectroscopy analysis identified the electron acceptor in a defined medium as U(VI) phosphate [uramphite; (NH4)(UO2)(PO4) . 3H2O], while the U(IV)-containing precipitate formed during bacterial growth was identified as ningyoite [CaU(PO4)2 . H2O]. This is the first report of microbial reduction of a largely insoluble U(VI) compound.
摘要
嗜热革兰氏阳性细菌嗜热铁还原地杆菌将有机营养生长与难溶性U(VI)磷酸盐的还原耦合起来。X射线粉末衍射和X射线吸收光谱分析确定在特定培养基中的电子受体为U(VI)磷酸盐[铀铵石；(NH4)(UO2)(PO4)·3H2O]，而细菌生长过程中形成的含U(IV)沉淀物被鉴定为水钙铀矿[CaU(PO4)2·H2O]。这是关于微生物还原一种难溶性U(VI)化合物的首次报道。
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