Isolation and characterization of a new spore-forming sulfate-reducing bacterium growing by complete oxidation of catechol |
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Authors: | Jan Kuever Juergen Kulmer Sigrid Jannsen Ulrich Fischer Karl-Heinz Blotevogel |
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Affiliation: | (1) AG Mikrobiologic, Universität Oldenburg, Fachbereich 7, Postfach 2503, W-2900 Oldenburg, Germany;(2) AG Geomikrobiologie, Universität Oldenburg, Fachbereich 7, Postfach 2503, W-2900 Oldenburg, Germany;(3) Present address: Department of Biochemistry, Cornell University, Biotechnology Building, 14853 Ithaca, NY, USA |
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Abstract: | A new mesophilic sulfate-reducing bacterium, strain Groll, was isolated from a benzoate enrichment culture inoculated with black mud from a freshwater ditch. The isolate was a spore-forming, rod-shaped, motile, gram-positive bacterium. This isolate was able of complete oxidation of several aromatic compounds including phenol, catechol, benzoate, p-and m-cresol, benzyl alcohol and vanillate. With hydrogen and carbon dioxide, formate or O-methylated aromatic compounds, autotrophic growth during sulfate reduction or homoacetogenesis was demonstrated. Lactate was not used as a substrate. SOinf4sup2-, SOinf3sup2-, and S2Oinf3sup2-were utilized as electron acceptors. Although strain Groll originated from a freshwater habitat, salt concentrations of up to 30 g·l-1 were tolerated. The optimum temperature for growth was 35–37°C. The G+C content of DNA was 42.1 mol%. This isolate is described as a new species of the genus Desulfotomaculum. |
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Keywords: | Sulfate reduction Desulfotomaculum Anaerobic catechol oxidation Degradation and transformation of aromatic compounds |
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