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Updated: Apr 14, 2026

Isolation and Identification of Bacterial Strains from Skin of Terrestrial Amphibians
Published on: June 17, 2025
Draconibacterium sediminis sp. nov., isolated from river sediment
Juan Du1, Qiliang Lai1, Yang Liu1
1State Key Laboratory Breeding Base of Marine Genetic Resources; Key Laboratory of Marine Genetic Resources, The Third Institute of State Oceanic Administration Collaborative Innovation Center of Marine Biological Resources Key Laboratory of Marine Genetic Resources of Fujian Province, Xiamen 361005, PR China.
A novel bacterium, Draconibacterium sediminis, was discovered in Chinese river sediment. This Gram-negative bacterium represents a new species within the Draconibacterium genus, expanding microbial diversity knowledge.
Area of Science:
- Microbiology
- Bacteriology
- Environmental Science
Background:
- The genus Draconibacterium comprises bacteria isolated from various environmental sources.
- Understanding microbial diversity in aquatic ecosystems is crucial for ecological studies.
Purpose of the Study:
- To characterize a novel bacterial strain, JN14CK-3(T), isolated from river sediment.
- To determine the taxonomic placement of strain JN14CK-3(T) within the Draconibacterium genus.
Main Methods:
- Phenotypic characterization including morphology, Gram staining, and metabolic tests.
- Phylogenetic analysis based on 16S rRNA gene sequencing.
- Genomic analysis including G+C content, DNA-DNA hybridization, and average nucleotide identity (ANI).
Main Results:
- Strain JN14CK-3(T) is a Gram-negative, facultatively anaerobic, rod-shaped bacterium.
- Phylogenetic analysis showed highest 16S rRNA gene similarity (98.3%) to Draconibacterium orientale FH5(T), but genomic data supported novelty.
- Digital DNA-DNA hybridization (34.2%) and ANI (87.1%) values confirmed strain JN14CK-3(T) as a distinct species.
Conclusions:
- Strain JN14CK-3(T) represents a novel species of the genus Draconibacterium.
- The proposed name for this new species is Draconibacterium sediminis sp. nov.
- This discovery contributes to the understanding of bacterial diversity in freshwater environments.
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