Erythrobacter lutimaris sp. nov., isolated from a tidal flat sediment

Area of Science:

• Microbiology
• Bacteriology
• Taxonomy

Background:

• The genus Erythrobacter comprises marine bacteria with diverse metabolic capabilities.
• Understanding bacterial diversity in marine environments is crucial for ecological and biotechnological applications.

Purpose of the Study:

• To characterize a novel bacterial strain isolated from a Korean tidal flat.
• To determine the taxonomic position of the novel strain within the genus Erythrobacter.

Main Methods:

• Polyphasic taxonomic study including 16S rRNA gene sequencing.
• Analysis of phenotypic characteristics, DNA G+C content, ubiquinone, fatty acids, and polar lipids.
• Phylogenetic analysis using neighbour-joining methods.

Main Results:

• Strain S-5(T) is a Gram-negative, non-motile coccoid bacterium belonging to the Alphaproteobacteria.
• Phylogenetic analysis placed strain S-5(T) within the Erythrobacter genus, with highest 16S rRNA gene similarity (96.0-96.7%) to E. pelagi, E. citreus, and E. seohaensis.
• Distinct phenotypic properties and genetic data supported its classification as a new species.

Conclusions:

• Strain S-5(T) represents a novel species of the genus Erythrobacter, named Erythrobacter lutimaris sp. nov.
• The proposed type strain is S-5(T) (KCTC 42109(T) = CECT 8624(T)).
• This finding contributes to the knowledge of marine bacterial diversity in the Yellow Sea.