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Altererythrobacter flavus sp. nov., isolated from mangrove sediment
Hui Ma1, Hao Ren1, Lingfeng Huang1
1Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems; Fujian Provincial Key Laboratory of Coastal Ecology and Environmental Studies, Xiamen University, Xiamen 361102, PR China.
Summary
A novel bacterium, Altererythrobacter flavus, was discovered in Chinese mangrove sediment. This yellow-pigmented, Gram-negative bacterium expands the known diversity within the Altererythrobacter genus.
Area of Science:
- Microbiology
- Bacteriology
- Environmental Science
Background:
- Mangrove ecosystems harbor diverse microbial communities.
- The genus Altererythrobacter comprises bacteria with known roles in various environments.
- Exploring microbial diversity in unique habitats like mangrove sediments is crucial for understanding ecological roles.
Purpose of the Study:
- To isolate and characterize a novel bacterial strain from mangrove sediment.
- To determine the taxonomic position of the novel isolate within the genus Altererythrobacter.
- To propose a new species designation based on polyphasic characterization.
Main Methods:
- Isolation of bacteria from mangrove sediment samples.
- Phylogenetic analysis using 16S rRNA gene sequences.
- Polyphasic characterization including chemotaxonomic and physiological analyses.
- Determination of DNA G+C content.
Main Results:
- A novel Gram-negative, aerobic, non-motile, rod-shaped bacterium, strain MS1-4T, was isolated.
- Strain MS1-4T showed highest 16S rRNA gene sequence similarity to Altererythrobacter mangrovi C9-11T (97.7%).
- Phylogenetic and chemotaxonomic data supported the classification of strain MS1-4T as a new species, Altererythrobacter flavus.
- Optimal growth conditions were pH 6.0, 34°C, and 4% NaCl, with a DNA G+C content of 60.4%.
Conclusions:
- Strain MS1-4T represents a novel species, Altererythrobacter flavus sp. nov.
- The discovery contributes to the understanding of bacterial diversity in mangrove ecosystems.
- This finding expands the phylogenetic and ecological knowledge of the genus Altererythrobacter.
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