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Published on: October 15, 2015
Pseudoclavibacter chungangensis sp. nov., isolated from activated sludge
Sung-Lim Cho1, Min Young Jung2,1, Mi-Hak Park1
1Department of Microbiology, Chung-Ang University College of Medicine, 221 Heukseok-dong, Dongjak-gu, Seoul 156-756, Republic of Korea.
International Journal of Systematic and Evolutionary Microbiology
|September 8, 2009
Summary
A novel bacterial species, Pseudoclavibacter chungangensis, was identified in activated sludge. This Gram-positive bacterium expands the known diversity within the Pseudoclavibacter genus.
Area of Science:
- Microbiology
- Bacteriology
- Taxonomy
Background:
- Activated sludge harbors diverse microbial communities.
- The genus Pseudoclavibacter comprises Gram-positive, non-spore-forming bacteria.
- Accurate bacterial classification is crucial for understanding microbial ecology and function.
Purpose of the Study:
- To determine the taxonomic position of a novel bacterial isolate (CAU 59(T)) from activated sludge.
- To characterize the phenotypic, chemotaxonomic, and genotypic features of strain CAU 59(T).
- To formally propose a new species within the genus Pseudoclavibacter.
Main Methods:
- Phenotypic characterization including colony morphology and biochemical tests.
- Chemotaxonomic analyses.
- Comparative 16S rRNA gene sequencing and DNA-DNA hybridization.
- Determination of DNA G+C content.
Main Results:
- Strain CAU 59(T) exhibited characteristics consistent with the genus Pseudoclavibacter.
- 16S rRNA gene sequence analysis revealed >3.6% divergence from known Pseudoclavibacter species, indicating a novel subline.
- DNA-DNA hybridization showed 20.9% relatedness to Pseudoclavibacter helvolus DSM 20419(T).
- The DNA G+C content was determined to be 66.2 mol%.
Conclusions:
- Strain CAU 59(T) represents a distinct species within the genus Pseudoclavibacter.
- The novel species is named Pseudoclavibacter chungangensis sp. nov.
- The type strain is CAU 59(T) (=KCTC 22691(T) =CCUG 58142(T)).
