Paenibacillusliaoningensis sp. nov., isolated from soil

Area of Science:

• Microbiology
• Bacterial Taxonomy
• Genomics

Background:

• Soil harbors diverse microbial communities with potential for novel species discovery.
• The genus Paenibacillus is known for its ecological roles and biotechnological applications.
• Accurate bacterial classification is crucial for understanding microbial diversity and function.

Purpose of the Study:

• To isolate and characterize a novel bacterial strain from a soil sample.
• To determine the taxonomic position of the novel isolate using polyphasic characterization.
• To propose a new species within the genus Paenibacillus.

Main Methods:

• Isolation and cultivation of bacteria from soil samples.
• Gram staining, motility, and endospore formation tests.
• Phylogenetic analysis using 16S rRNA gene sequences.
• Chemotaxonomic analyses including fatty acid composition, menaquinone, polar lipids, and peptidoglycan type.
• DNA G+C content determination and DNA-DNA hybridization.

Main Results:

• A novel Gram-positive, aerobic, motile, endospore-forming, rod-shaped bacterium, strain LNUB461T, was isolated.
• Phylogenetic analysis showed highest similarity (98.5%) to Paenibacillus algorifonticola.
• Chemotaxonomic data (fatty acids, menaquinone, polar lipids, peptidoglycan) and DNA-DNA hybridization (41.8%) supported its distinction from related species.
• DNA G+C content was 49.1 mol%.

Conclusions:

• Strain LNUB461T represents a novel species of the genus Paenibacillus.
• The proposed name for the novel species is Paenibacillus liaoningensis sp. nov.
• The type strain is LNUB461T (=JCM 30712T=CGMCC 1.15101T).