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Clostridium bolteae sp. nov., isolated from human sources
Yuli Song1, Chengxu Liu, Denise R Molitoris
1Research Service, VA Medical Center West Los Angeles 90073, USA. yulis1@yahoo.com
Systematic and Applied Microbiology
|May 16, 2003
Summary
Researchers identified a new bacterial species, Clostridium bolteae, from human samples. This obligate anaerobe is distinct from Clostridium clostridioforme based on genetic and phenotypic analyses.
Area of Science:
- Microbiology
- Bacterial Taxonomy
- Anaerobic Microbiology
Background:
- Human-associated microbiota harbors diverse bacterial species.
- Obligate anaerobic bacteria play significant roles in various environments.
- Accurate bacterial classification is crucial for understanding microbial roles.
Purpose of the Study:
- To characterize and classify novel obligate anaerobic, gram-positive, spore-forming bacteria from human sources.
- To differentiate the novel bacteria from closely related species using molecular and phenotypic methods.
Main Methods:
- Phenotypic characterization of bacterial isolates.
- 16S rRNA gene sequencing for phylogenetic analysis.
- Genomic DNA-DNA hybridization for species delineation.
Main Results:
- Seven strains formed a distinct, previously unknown sub-line within the Clostridium coccoides rRNA group.
- The novel bacteria fermented carbohydrates, producing acetic and lactic acids.
- 16S rRNA gene divergence (3%) and DNA-DNA pairing confirmed they are a separate species from Clostridium clostridioforme.
Conclusions:
- The novel bacteria were proposed to be classified as Clostridium bolteae sp. nov.
- Clostridium bolteae is phenotypically and phylogenetically distinct from Clostridium clostridioforme.
- The type strain is WAL 16351T.