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Isolation and characterization of a novel As(V) reducing bacterium: implications for arsenic mobilization and the genus Desulfitobacterium Item Info

Dissimilatory arsenate reducing bacteria have been implicated in the mobilization of arsenic from arsenic-enriched sediments. An As(V)-reducing bacterium, designated strain GBFH, was isolated from arsenic-contaminated sediments of Lake Coeur d'Alene, Idaho. Strain GBFH is capable of reducing As(V), F e(III), Se(VI), Mn(IV) and a variety of oxidized sulfur species. 16s rDNA sequence comparisons reveal that strain GBFH is closely related to Desulfitobacterium hafniense and Desulfitobacterium frappieri. Comparative physiological studies illustrate that Desulfitobacterium hafniense and Desulfitobacterium frappieri, known for reductively dechlorinating chlorophenols, are also capable of toxic metal(loid) respiration. DNA:DNA hybridization and comparative physiological studies suggest that D. hafniense D. frappieri, and strain GBFH should be united into one species. The isolation of an Fe(III) and As(V)-reducing bacterium from Lake Coeur d'Alene suggests a mechanism for arsenic mobilization in these contaminated sediments while the discovery of metal(loid) respiration in the genus Desul.fitobacterium has implications for environments cocontaminated with arsenous and chlorophenolic compounds.

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Title:
Isolation and characterization of a novel As(V) reducing bacterium: implications for arsenic mobilization and the genus Desulfitobacterium
Authors:
Niggemyer, Allison
Date Created (ISO Standard):
2001-05
Description:
Dissimilatory arsenate reducing bacteria have been implicated in the mobilization of arsenic from arsenic-enriched sediments. An As(V)-reducing bacterium, designated strain GBFH, was isolated from arsenic-contaminated sediments of Lake Coeur d'Alene, Idaho. Strain GBFH is capable of reducing As(V), F e(III), Se(VI), Mn(IV) and a variety of oxidized sulfur species. 16s rDNA sequence comparisons reveal that strain GBFH is closely related to Desulfitobacterium hafniense and Desulfitobacterium frappieri. Comparative physiological studies illustrate that Desulfitobacterium hafniense and Desulfitobacterium frappieri, known for reductively dechlorinating chlorophenols, are also capable of toxic metal(loid) respiration. DNA:DNA hybridization and comparative physiological studies suggest that D. hafniense D. frappieri, and strain GBFH should be united into one species. The isolation of an Fe(III) and As(V)-reducing bacterium from Lake Coeur d'Alene suggests a mechanism for arsenic mobilization in these contaminated sediments while the discovery of metal(loid) respiration in the genus Desul.fitobacterium has implications for environments cocontaminated with arsenous and chlorophenolic compounds.
Subjects:
arsenic sediment contamination bacteria
Location:
Lake Coeur d'Alene
Latitude:
47.54
Longitude:
-116.82
Collection:
Coeur d'Alene Basin
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
Publisher:
University of Idaho
Contributing Institution:
University of Idaho
Type:
Text
Format:
application/pdf
Cataloger:
wbv
Date Digitized:
2012

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Preferred Citation:
"Isolation and characterization of a novel As(V) reducing bacterium: implications for arsenic mobilization and the genus Desulfitobacterium", Idaho Waters Digital Library, University of Idaho Library Digital Collections, https://www.lib.uidaho.edu/digital/iwdl/items/iwdl-cda_niggemyer_2001.html
Rights
Rights:
Rights to the digital resource are held by the University of Idaho. http://www.uidaho.edu/
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