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Characterization of Fe (III)-Reducing Bacteria Isolated from the Sediment of Chunho Reservoir  

안태영 (단국대학교 미생물학과)
박재홍 (단국대학교 미생물학과)
이일규 (단국대학교 미생물학과)
전은형 (단국대학교 미생물학과)
Publication Information
Korean Journal of Microbiology / v.38, no.2, 2002 , pp. 133-138 More about this Journal
Abstract
Microbial Fe (III) reduction is important for the biogeochemical cycle in the sediment of freshwater system. Also, the Fe (III) reducing mechanism make a model of oxidizing organic compounds and reducing toxic heavy metals, such as chrome or uranium. Thirty-seven strains which have Fe (III) reducing activity were isolated from sediments in lake Soyang and Chunho reservoir. The initial concentration of Fe (II) was the highest in sediments of lake Soyang. However, the highest Fe (III) reducing activity was shown in Chunho reservoir. All isolates were tested for Fe (III) reducing activity. Strains C2 and C3, which were isolated from sediments of Chunho reservoir, showed the highest activity. These strains were tested to see if they utilize various electron donors such as glucose, yeast extract, acetate, ethanol and toluene. Significantly, glucose and yeast extract were used as electron donors. Also these strains were conformed to use humid acid and nitrate as electron accepters. The 16S rRNA sequences of strains C2 and C3 were closely related to Aeromonas hydrophila with 95% similarity.
Keywords
Fe (III) reduction; 16S rRNA analysis;
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