Paracoccus aerius sp. nov., isolated from air

Area of Science:

• Microbiology
• Bacterial Taxonomy
• Environmental Microbiology

Background:

• The genus Paracoccus encompasses diverse bacteria found in various environments.
• Characterizing novel isolates is crucial for understanding microbial diversity and ecological roles.

Purpose of the Study:

• To isolate and characterize a novel bacterial strain from an air sample.
• To determine the taxonomic position of the novel isolate within the genus Paracoccus.

Main Methods:

• Isolation and cultivation of strain 011410T from air.
• Polyphasic characterization including morphology, physiology, and biochemical tests.
• Phylogenetic analysis based on 16S rRNA gene sequencing.
• Analysis of cellular fatty acids, respiratory quinones, and polar lipids.

Main Results:

• Strain 011410T is a Gram-negative, facultatively anaerobic, motile bacterium.
• Optimal growth occurs at 30°C, pH 8.0, and 0-2% NaCl.
• Phylogenetic analysis places strain 011410T within the genus Paracoccus, closely related to P. aestuarii and P. sediminis.
• Unique chemotaxonomic profiles (fatty acids, quinones, polar lipids) and DNA G+C content (63.5%) were determined.

Conclusions:

• Strain 011410T represents a novel species within the genus Paracoccus.
• The proposed name for this new species is Paracoccus aerius sp. nov.
• This discovery contributes to the known diversity of airborne bacteria and the Paracoccus genus.