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Applied and Environmental Microbiology, November 1998, p. 4603-4606, Vol. 64, No. 11
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

Spectrum of the Reductive Dehalogenation Activity of Desulfitobacterium frappieri PCP-1

D. Dennie, I. Gladu, F. Lépine, R. Villemur, J.-G. Bisaillon, and R. Beaudet*

Centre de Recherche en Microbiologie Appliquée, Institut Armand-Frappier, Université du Québec, Ville de Laval, Quebec, Canada H7N 4Z3

Received 21 April 1998/Accepted 6 August 1998

Desulfitobacterium frappieri PCP-1 was induced for ortho- and para-dechlorinating activities by different chlorophenols. Dehalogenation rates ranging from 25 to 1,158 nmol/min/mg of cell protein were observed according to the chlorophenol tested and the position of the chlorine removed. D. frappieri shows a broad substrate specificity; in addition to tetrachloroethylene and pentachloropyridine, strain PCP-1 can dehalogenate at ortho, meta, and para positions a large variety of aromatic molecules with substituted hydroxyl or amino groups. Reactions of O demethylation and reduction of nitro to amino substituents on aromatic molecules were also observed.

* Corresponding author. Mailing address: Centre de Recherche en Microbiologie Appliquée, Institut Armand-Frappier, Université du Québec, Ville de Laval, C.P. 100, Quebec, Canada H7N 4Z3. Fax: (450) 686-5501. E-mail: Rejean_Beaudet{at}IAF.UQUEBEC.CA.

Applied and Environmental Microbiology, November 1998, p. 4603-4606, Vol. 64, No. 11
0099-2240/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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