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Eubacterium exiguum sp. nov., isolated from human oral lesions
S E Poco1, F Nakazawa, T Ikeda
1Department of Oral Microbiology, Niigata University School of Dentistry, Japan.
International Journal of Systematic Bacteriology
|October 1, 1996
Summary
A new bacterial species, Eubacterium exiguum, has been identified from oral lesions. This classification is based on DNA analysis and phenotypic characteristics, establishing strain S-7 as the type strain.
Area of Science:
- Microbiology
- Bacteriology
- Oral biology
Background:
- Previously, certain bacteria from oral lesions were grouped as Eubacterium group S strains.
- These bacteria possess unique characteristics that warranted further investigation.
Purpose of the Study:
- To formally propose and characterize a new bacterial species, Eubacterium exiguum sp. nov.
- To differentiate this new species from previously described Eubacterium strains.
Main Methods:
- DNA-DNA hybridization experiments were conducted.
- DNA base composition (G + C content) was determined.
- API ZYM analysis, Western blotting (immunoblotting), and phenotypic tests were performed.
Main Results:
- DNA-DNA hybridization confirmed Eubacterium exiguum as a distinct species.
- G + C content ranged from 60 to 64 mol%.
- Specific results from API ZYM, Western blotting, and phenotypic tests are detailed.
Conclusions:
- Eubacterium exiguum sp. nov. is proposed as a new species.
- The type strain for E. exiguum is strain S-7.
- This classification provides a clearer understanding of oral bacterial diversity.