Lysobacter lacus sp. nov., isolated from from lake sediment

Area of Science:

• Microbiology
• Bacteriology
• Taxonomy

Background:

• The genus Lysobacter comprises aerobic, Gram-negative bacteria known for various ecological roles.
• Accurate taxonomic classification is crucial for understanding bacterial diversity and function.

Purpose of the Study:

• To characterize a novel bacterial isolate from lake water.
• To determine the taxonomic position of the isolate within the Lysobacter genus.
• To propose a new species if the isolate represents a distinct taxon.

Main Methods:

• Isolation and cultivation of aerobic, Gram-stain-negative bacteria from lake water.
• 16S rRNA gene sequencing and phylogenetic analysis.
• Polyphasic taxonomic analysis including DNA G+C content, respiratory quinone, fatty acid profiles, polar lipid analysis, and DNA-DNA relatedness.

Main Results:

• Strain UKS-15 was identified as a novel species within the genus Lysobacter, most closely related to Lysobacter xinjiangensis.
• Phylogenetic analysis placed strain UKS-15 within the Lysobacter genus.
• Chemotaxonomic data (Q-8, fatty acids, polar lipids) and low DNA-DNA relatedness (<22.0%) supported its distinction from known Lysobacter species.

Conclusions:

• Strain UKS-15 represents a novel species of the genus Lysobacter.
• The proposed name for the novel species is Lysobacter lacus sp. nov.
• The type strain is UKS-15T (=JCM 30983T=KACC 18719T).