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Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside
Published on: July 3, 2016
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Cryobacterium soli sp. nov., isolated from forest soil
Chunjie Gong1, Qiliang Lai2, Hanfeng Cai1
1Key Laboratory of Fermentation Engineering (Ministry of Education), Hubei Provincial Cooperative Innovation Center of Industrial Fermentation, National "111" Center for Cellular Regulation and Molecular Pharmaceutics, Hubei University of Technology, Wuhan 430068, PR China.
International Journal of Systematic and Evolutionary Microbiology
|November 1, 2019
Summary
A novel bacterium, Cryobacterium soli sp. nov., was identified from forest soil in China. This Gram-positive, non-motile rod expands the known diversity within the Cryobacterium genus.
Area of Science:
- Microbiology
- Bacteriology
- Taxonomy
Background:
- The genus *Cryobacterium* comprises bacteria known for their ability to thrive in cold environments.
- Understanding bacterial diversity in soil ecosystems is crucial for ecological and biotechnological applications.
Purpose of the Study:
- To taxonomically characterize a novel bacterial strain, GCJ02T, isolated from forest soil.
- To determine the phylogenetic and genotypic relationship of strain GCJ02T to existing *Cryobacterium* species.
Main Methods:
- Phylogenetic analysis using 16S rRNA gene sequences.
- Average Nucleotide Identity (ANI) and DNA-DNA hybridization (DDH) estimations.
- Analysis of cellular fatty acid composition, G+C content, and polar lipid profiles.
Main Results:
- Strain GCJ02T exhibited Gram-positive, catalase-positive, and weakly oxidase-positive characteristics, being rod-shaped and non-motile.
- Phylogenetic analysis showed highest 16S rRNA gene sequence similarity to *Cryobacterium arcticum* SK1T (99.5%) and *Cryobacterium zongtaii* TMN-42T (99.5%).
- ANI and DDH values confirmed GCJ02T as a distinct species, with principal fatty acids anteiso-C15:0 (53.0%) and anteiso-C17:0 (18.8%).
Conclusions:
- Strain GCJ02T represents a novel species within the genus *Cryobacterium*.
- The proposed name for this new species is *Cryobacterium soli* sp. nov., with strain GCJ02T as the type strain.
- This finding contributes to the understanding of microbial diversity in forest soil ecosystems.
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