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Science. 1997 Jun 6;276(5318):1568-71.

Isolation of a bacterium that reductively dechlorinates tetrachloroethene to ethene.

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  • 1Section of Microbiology, Wing Hall, Cornell University, Ithaca, NY 14853, USA. Ithaca, NY 14853, USA.

Abstract

Tetrachloroethene is a prominent groundwater pollutant that can be reductively dechlorinated by mixed anaerobic microbial populations to the nontoxic product ethene. Strain 195, a coccoid bacterium that dechlorinates tetrachloroethene to ethene, was isolated and characterized. Growth of strain 195 with H2 and tetrachloroethene as the electron donor and acceptor pair required extracts from mixed microbial cultures. Growth of strain 195 was resistant to ampicillin and vancomycin; its cell wall did not react with a peptidoglycan-specific lectin and its ultrastructure resembled S-layers of Archaea. Analysis of the 16S ribosomal DNA sequence of strain 195 indicated that it is a eubacterium without close affiliation to any known groups.

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PMID:
9171062
[PubMed - indexed for MEDLINE]
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