Previous Article | Next Article ![]()
Applied and Environmental Microbiology, June 2000, p. 2408-2413, Vol. 66, No. 6
Department of Crop and Soil Sciences and
Center for Microbial Ecology, Michigan State University, East
Lansing, Michigan 48824,1 and Department
of Civil and Environmental Engineering, The University of Illinois,
Urbana, Illinois 618012
Received 31 January 2000/Accepted 21 March 2000
Strain SF3, a gram-negative, anaerobic, motile, short curved rod
that grows by coupling the reductive dechlorination of 2-chlorophenol (2-CP) to the oxidation of acetate, was isolated from San Francisco Bay
sediment. Strain SF3 grew at concentrations of NaCl ranging from 0.16 to 2.5%, but concentrations of KCl above 0.32% inhibited growth. The
isolate used acetate, fumarate, lactate, propionate, pyruvate, alanine,
and ethanol as electron donors for growth coupled to reductive
dechlorination. Among the halogenated aromatic compounds tested, only
the ortho position of chlorophenols was reductively dechlorinated, and additional chlorines at other positions blocked ortho dechlorination. Sulfate, sulfite, thiosulfate, and
nitrate were also used as electron acceptors for growth. The optimal
temperature for growth was 30°C, and no growth or dechlorination
activity was observed at 37°C. Growth by reductive dechlorination was
revealed by a growth yield of about 1 g of protein per mol of 2-CP
dechlorinated, and about 2.7 g of protein per mole of
2,6-dichlorophenol dechlorinated. The physiological features and 16S
ribosomal DNA sequence suggest that the organism is a novel species of
the genus Desulfovibrio and which we have designated
Desulfovibrio dechloracetivorans. The unusual physiological
feature of this strain is that it uses acetate as an electron donor and
carbon source for growth with 2-CP but not with sulfate.
0099-2240/00/$04.00+0
Copyright © 2000, American Society for Microbiology. All rights reserved.
Isolation and Characterization of Desulfovibrio
dechloracetivorans sp. nov., a Marine Dechlorinating
Bacterium Growing by Coupling the Oxidation of Acetate to the
Reductive Dechlorination of 2-Chlorophenol
*
Corresponding author. Mailing address: Center for
Microbial Ecology, Plant and Soil Sciences Building, Michigan State
University, East Lansing, MI 48824-1325. Phone: (517) 353-9021. Fax:
(517) 353-2917. E-mail: tiedjej{at}pilot.msu.edu.
This article has been cited by other articles:
Copyright © 2009 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»