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Updated: Sep 7, 2025
05:19
Isolation and Identification of Bacterial Strains from Skin of Terrestrial Amphibians
Published on: June 17, 2025
675
Thalassococcus arenae sp. nov. isolated from sea sand
Veeraya Weerawongwiwat1, Jong-Hwa Kim1, Jung-Sook Lee2
1Department of Microbiology, College of Medicine, Chung-Ang University, Seoul, Republic of Korea.
Archives of Microbiology
|June 21, 2022
Summary
A novel bacterium, Thalassococcus arenae sp. nov., was identified from sea sand in Korea. This Gram-negative, aerobic bacterium contributes to the diversity of the Thalassococcus genus.
Area of Science:
- Microbiology
- Bacteriology
- Marine Biology
Background:
- The genus Thalassococcus encompasses marine bacteria with diverse ecological roles.
- Understanding bacterial diversity in marine environments is crucial for ecological and biotechnological applications.
Purpose of the Study:
- To isolate and characterize a novel bacterium from a marine environment.
- To determine the phylogenetic and chemotaxonomic properties of the novel isolate.
- To propose a new species within the Thalassococcus genus.
Main Methods:
- Isolation of bacteria from sea sand samples.
- Phylogenetic analysis using 16S rRNA gene sequences.
- Whole genome sequencing and analysis.
- Determination of cellular fatty acid composition and isoprenoid quinones.
- Polar lipid analysis.
Main Results:
- A novel Gram-negative, aerobic, rod-shaped bacterium, strain CAU 1522T, was isolated.
- Phylogenetic analysis indicated high similarity to known Thalassococcus species, supporting its placement in this genus.
- Genomic analysis revealed a 3.7 Mb genome with 3599 protein-coding genes and a G+C content of 65.4%.
- Chemotaxonomic analysis identified predominant fatty acids and polar lipids characteristic of the genus.
Conclusions:
- Strain CAU 1522T represents a novel species of the genus Thalassococcus, named Thalassococcus arenae sp. nov.
- The study expands the known diversity of Thalassococcus, highlighting marine sand as a source of novel microbial life.
- The proposed type strain is CAU 1522T (KCTC 72545T, MCCC 1K04064T).
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