Magnetite Formation by the Novel Fe(III)-reducing Geothrix fermentans Strain HradG1 Isolated from a Hydrocarbon-Contaminated Sediment with Increased Magnetic Susceptibility

被引：29
作者：
Klueglein, Nicole [1 ]
Loesekann-Behrens, Tina [1 ]
Obst, Martin [1 ]
Behrens, Sebastian [1 ]
Appel, Erwin [2 ]
Kappler, Andreas [1 ,2 ]
机构：
[1] Univ Tubingen, D-72076 Tubingen, Germany
[2] Univ Tubingen, Ctr Appl Geosci, D-72076 Tubingen, Germany
来源：
GEOMICROBIOLOGY JOURNAL | 2013年 / 30卷 / 10期
关键词：
biodegradation; biomineralization; groundwater; iron reduction; molecular ecology; DISSIMILATORY FE(III) REDUCTION; JET-FUEL; SP NOV; MICROBIAL COMMUNITIES; ELECTRON-ACCEPTORS; GEN; NOV; IRON; SEQUENCE; BACTERIA; DEGRADATION;
D O I：
10.1080/01490451.2013.790922
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
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.
引用
收藏
页码：863 / 873
页数：11
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