U.S. Department of EnergyOffice of Scientific and Technical Information
pH gradient-induced heterogeneity of Fe(III)-reducing microorganisms in coal mining-associated lake sediments
Abstract
Lakes formed because of coal mining are characterized by low pH and high concentrations of Fe(II) and sulfate. The anoxic sediment is often separated into an upper acidic zone (pH 3; zone 1) with large amounts of reactive iron and a deeper slightly acidic zone (pH 5.5; zone III) with smaller amounts of iron. In this study, the impact of pH on the Fe(III)-reducing activities in both of these sediment zones was investigated, and molecular analyses that elucidated the sediment microbial diversity were performed. The results demonstrated that the upper acidic sediment was inhabited by acidophiles or moderate acidophiles which can also reduce Fe(III) under slightly acidic conditions. The majority of Fe(III) reducers inhabiting the slightly acidic sediment had only minor capacities to be active under acidic conditions.
- Authors:
-
- University of Bayreuth, Bayreuth (Germany)
- Publication Date:
- OSTI Identifier:
- 21017249
- Resource Type:
- Journal Article
- Journal Name:
- Applied and Environmental Microbiology
- Additional Journal Information:
- Journal Volume: 74; Journal Issue: 4; Journal ID: ISSN 0099-2240
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; 54 ENVIRONMENTAL SCIENCES; SEDIMENTS; LAKES; COAL MINING; PH VALUE; ACID MINE DRAINAGE; SULFATES; REDUCTION; BACTERIA; IRON; PROTEUS
Citation Formats
Blothe, M, Akob, D M, Kostka, J E, Goschel, K, Drake, H L, and Kusel, K. pH gradient-induced heterogeneity of Fe(III)-reducing microorganisms in coal mining-associated lake sediments. United States: N. p., 2008.
Web. doi:10.1128/AEM.01194-07.
Blothe, M, Akob, D M, Kostka, J E, Goschel, K, Drake, H L, & Kusel, K. pH gradient-induced heterogeneity of Fe(III)-reducing microorganisms in coal mining-associated lake sediments. United States. https://doi.org/10.1128/AEM.01194-07
Blothe, M, Akob, D M, Kostka, J E, Goschel, K, Drake, H L, and Kusel, K. 2008.
"pH gradient-induced heterogeneity of Fe(III)-reducing microorganisms in coal mining-associated lake sediments". United States. https://doi.org/10.1128/AEM.01194-07.
@article{osti_21017249,
title = {pH gradient-induced heterogeneity of Fe(III)-reducing microorganisms in coal mining-associated lake sediments},
author = {Blothe, M and Akob, D M and Kostka, J E and Goschel, K and Drake, H L and Kusel, K},
abstractNote = {Lakes formed because of coal mining are characterized by low pH and high concentrations of Fe(II) and sulfate. The anoxic sediment is often separated into an upper acidic zone (pH 3; zone 1) with large amounts of reactive iron and a deeper slightly acidic zone (pH 5.5; zone III) with smaller amounts of iron. In this study, the impact of pH on the Fe(III)-reducing activities in both of these sediment zones was investigated, and molecular analyses that elucidated the sediment microbial diversity were performed. The results demonstrated that the upper acidic sediment was inhabited by acidophiles or moderate acidophiles which can also reduce Fe(III) under slightly acidic conditions. The majority of Fe(III) reducers inhabiting the slightly acidic sediment had only minor capacities to be active under acidic conditions.},
doi = {10.1128/AEM.01194-07},
url = {https://www.osti.gov/biblio/21017249},
journal = {Applied and Environmental Microbiology},
issn = {0099-2240},
number = 4,
volume = 74,
place = {United States},
year = {Fri Feb 15 00:00:00 EST 2008},
month = {Fri Feb 15 00:00:00 EST 2008}
}
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