Maribacter pelagius sp. nov., isolated from seawater

Area of Science:

• Microbiology
• Bacterial Taxonomy
• Marine Biology

Background:

• The family Flavobacteriaceae comprises diverse marine bacteria.
• Accurate classification of novel bacterial isolates is crucial for understanding microbial ecosystems.

Purpose of the Study:

• To characterize and classify a novel bacterial strain, CBA3204^T, isolated from seawater.
• To determine the phylogenetic and taxonomic placement of strain CBA3204^T within the Flavobacteriaceae family.

Main Methods:

• Polyphasic taxonomic analysis including 16S rRNA gene sequencing.
• Phylogenetic analysis to determine evolutionary relationships.
• Phenotypic, chemotaxonomic, and growth characteristic assessments.

Main Results:

• Strain CBA3204^T is a Gram-negative, gliding, non-endospore-forming, and slightly halophilic bacterium.
• Phylogenetic analysis placed strain CBA3204^T within the Flavobacteriaceae family, with Maribacter arcticus as the nearest neighbor (96.96% 16S rRNA similarity).
• Optimal growth occurred at 25-30°C and 2-4% NaCl, with MK-6 as the dominant menaquinone and specific major fatty acids identified. DNA G+C content was 35.1%.

Conclusions:

• Strain CBA3204^T exhibits distinct phenotypic properties differentiating it from other Maribacter species.
• Based on comprehensive polyphasic data, strain CBA3204^T is proposed as a novel species, Maribacter pelagius sp. nov.