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Roseomonas terrae sp. nov.
Jung-Hoon Yoon1, So-Jung Kang1, Hyun Woo Oh1
1Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, Korea.
International Journal of Systematic and Evolutionary Microbiology
|November 6, 2007
Summary
A novel bacterium, Roseomonas terrae sp. nov., was discovered in Korean soil. This Gram-negative coccobacillus expands the known diversity within the Roseomonas genus.
Area of Science:
- Microbiology
- Bacteriology
- Taxonomy
Background:
- The genus Roseomonas comprises Gram-negative bacteria with diverse environmental origins.
- Accurate bacterial classification is crucial for understanding microbial ecology and function.
Purpose of the Study:
- To taxonomically characterize a novel bacterial isolate, strain DS-48T, obtained from Dokdo soil.
- To determine if strain DS-48T represents a new species within the Roseomonas genus.
Main Methods:
- Polyphasic taxonomic study including phenotypic characterization, 16S rRNA gene sequencing, and DNA-DNA hybridization.
- Analysis of growth conditions, cellular fatty acids, and ubiquinone composition.
- Phylogenetic analysis using 16S rRNA gene sequences.
Main Results:
- Strain DS-48T is a non-motile, coccobacilli-shaped, Gram-negative bacterium.
- Optimal growth observed at 25°C, pH 7.0–8.0, and 0.5% NaCl.
- Phylogenetic analysis placed strain DS-48T within the genus Roseomonas, closely related to Roseomonas lacus.
- DNA-DNA relatedness and phenotypic differences distinguished DS-48T from known Roseomonas species, with a DNA G+C content of 69.3 mol%.
Conclusions:
- Strain DS-48T represents a novel species within the genus Roseomonas.
- The proposed name for this new species is Roseomonas terrae sp. nov.
- The type strain is DS-48T (=KCTC 12874T=JCM 14592T).
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