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[Mesophilic rod-like nonsporeforming bacterium reducing sulfates]
Mikrobiologiia
|September 1, 1976
Summary
A novel sulfate-reducing bacterium, Desulfovibrio baculatus nov. sp., was identified. This obligate anaerobe thrives in diverse conditions, utilizing various organic acids and electron acceptors, and was isolated from manganese ore dumps.
Area of Science:
- Microbiology
- Bacteriology
Context:
- Sulfate-reducing bacteria (SRBs) play crucial roles in biogeochemical cycles.
- Understanding novel SRB species enhances our knowledge of microbial diversity and function.
- The isolation of new SRBs is vital for environmental and industrial applications.
Purpose:
- To describe a newly discovered sulfate-reducing bacterium.
- To characterize its morphological, physiological, and biochemical properties.
- To classify it as a new species, Desulfovibrio baculatus nov. sp.
Summary:
- A pure culture of Desulfovibrio baculatus nov. sp. was isolated from manganese ore dumps.
- This obligate anaerobic organism exhibits short rod-shaped cells with a polar flagellum.
- It utilizes various organic acids (lactate, pyruvate, malate) and electron acceptors (sulfate, sulfite, thiosulfate), and can grow on formate and hydrogen.
- Growth occurs between 2-41°C with up to 6% NaCl tolerance.
- Cells lack desulfoviridine but contain cytochromes b and c.
- DNA G+C content is 56.8±0.4 mole %.
Impact:
- Expands the known diversity of Desulfovibrio species.
- Provides insights into microbial metabolism in manganese-rich environments.
- Potential applications in bioremediation and industrial processes involving sulfate reduction.