Magnetite Formation by the Novel Fe(III)-reducing Geothrix fermentans Strain HradG1 Isolated from a Hydrocarbon-Contaminated Sediment with Increased Magnetic Susceptibility
Magnetite Formation by the Novel Fe(III)-reducing Geothrix fermentans Strain HradG1 Isolated from a Hydrocarbon-Contaminated Sediment with Increased Magnetic Susceptibility
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DOI：
10.1080/01490451.2013.790922
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发表时间：
2013-11-26
影响因子：
2.3
通讯作者：
Kappler, Andreas
中科院分区：
文献类型：
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作者：
Klueglein, Nicole;Loesekann-Behrens, Tina;Kappler, Andreas
捷克共和国前军事基地Hradcany的表层沉积物被碳氢化合物严重污染，多年来通过空气喷射进行了补救。在地下水涨落带，沉积物表现出较强的磁性增强。在这里，我们描述了一个新的铁（III）的还原和磁铁矿生产细菌菌株发酵地丝菌HradG 1从这个磁性和氧化还原动力层的分离。这种隔离强调，属Geothrix是一个相关的一组细菌在烃污染的环境中，经历动态的氧化-缺氧氧化还原波动。这些生物体的Fe（III）还原代谢活动可能导致磁性土壤性质的变化，这些性质可能用于识别地球化学热点。
Surface sediments at the former military base Hradcany, Czech Republic, heavily contaminated with hydrocarbons, were remediated over years by air-sparging. The sediments show a strong magnetic enhancement at the groundwater fluctuation zone. Here we describe the isolation of a new Fe(III)-reducing and magnetite-producing bacterial strain Geothrix fermentans HradG1from this magnetic and redox-dynamic layer. This isolation underlines that the genus Geothrix is a relevant group of bacteria in hydrocarbon-contaminated environments that undergo dynamic oxic-anoxic redox fluctuations. The Fe(III)-reducing metabolic activity of these organisms potentially leads to changing magnetic soil properties that can potentially be used to identify biogeochemical hotspots.