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Updated: Jul 6, 2026
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Growing Magnetotactic Bacteria of the Genus Magnetospirillum: Strains MSR-1, AMB-1 and MS-1
Published on: October 17, 2018
Marinobacter pelagius sp. nov., a moderately halophilic bacterium
Xue-Wei Xu1, Yue-Hong Wu, Chun-Sheng Wang
1Laboratory of Marine Ecosystem and Biogeochemistry, State Oceanic Administration, Hangzhou 310012, People's Republic of China.
Summary
A novel marine bacterium, Marinobacter pelagius HS225(T), was discovered in Chinese seawater. This moderately halophilic species expands the known diversity within the Marinobacter genus.
Area of Science:
- Microbiology
- Marine Biology
- Bacteriology
Background:
- Marine environments harbor diverse microbial life.
- The genus Marinobacter includes important marine bacteria.
- Characterization of novel marine bacteria is crucial for understanding microbial ecosystems.
Purpose of the Study:
- To isolate and characterize a novel bacterial strain from seawater.
- To determine the phylogenetic and taxonomic position of the novel isolate.
- To propose a new species within the Marinobacter genus.
Main Methods:
- Isolation of bacteria from seawater samples.
- Physicochemical characterization (growth conditions, fatty acid profile, G+C content).
- Phylogenetic analysis using 16S rRNA gene sequencing and DNA-DNA hybridization.
Main Results:
- A Gram-negative, aerobic, moderately halophilic bacterium, strain HS225(T), was isolated.
- Strain HS225(T) showed optimal growth at 5.0% NaCl, pH 7.0-8.0, and 25-30°C.
- Phylogenetic analysis revealed HS225(T) as a distinct species within the Marinobacter genus, closely related to Marinobacter koreensis.
Conclusions:
- Strain HS225(T) represents a novel species, Marinobacter pelagius sp. nov.
- The study expands the taxonomic and phylogenetic knowledge of the Marinobacter genus.
- Marinobacter pelagius contributes to the understanding of microbial diversity in marine environments.
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