Chitinophaga terrae sp. nov., isolated from soil

Area of Science:

• Microbiology
• Bacteriology
• Taxonomy

Background:

• The phylum Bacteroidetes includes diverse bacteria with various ecological roles.
• The genus Chitinophaga comprises species known for chitinolytic activity and soil habitats.
• Accurate taxonomic classification is crucial for understanding microbial diversity and function.

Purpose of the Study:

• To taxonomically characterize a novel bacterial strain isolated from South Korean soil.
• To determine the phylogenetic and phenotypic distinctiveness of the novel strain within the Chitinophaga genus.
• To propose a new species designation for the novel isolate.

Main Methods:

• Polyphasic taxonomic characterization including morphological, physiological, and biochemical tests.
• Phylogenetic analysis based on 16S rRNA gene sequencing.
• Chemotaxonomic analysis of major menaquinone and fatty acid profiles.

Main Results:

• A novel Gram-negative, aerobic, non-motile, non-spore-forming rod, designated KP01(T), was isolated.
• Phylogenetic analysis placed KP01(T) within the genus Chitinophaga, but distinct from known species (90.3–95.7% 16S rRNA gene similarity).
• Phenotypic and chemotaxonomic data (MK-7, iso-C15:0, C16:1ω5c, C17:0 iso 3-OH) supported its placement in Chitinophaga.

Conclusions:

• Strain KP01(T) represents a novel species within the genus Chitinophaga.
• The proposed name for this new species is Chitinophaga terrae sp. nov.
• The type strain is KP01(T) (=KCTC 12836(T) =LMG 24015(T)).