Kribbella sindirgiensis sp. nov. isolated from soil

Area of Science:

• Microbiology
• Bacteriology
• Taxonomy

Background:

• The genus Kribbella comprises actinomycetes with diverse ecological roles.
• Soil environments are rich reservoirs of microbial diversity, including novel bacterial species.

Purpose of the Study:

• To characterize a newly isolated Kribbella strain, FSN23^T, from a Turkish soil sample.
• To determine if strain FSN23^T represents a new species within the Kribbella genus.

Main Methods:

• Polyphasic taxonomy including chemotaxonomic, morphological, and molecular analyses.
• Phylogenetic analysis using 16S rRNA gene sequencing.
• Determination of cell wall composition, whole cell sugars, polar lipids, menaquinone, and fatty acid profiles.

Main Results:

• Strain FSN23^T exhibited morphological and chemotaxonomic characteristics consistent with the genus Kribbella.
• Phylogenetic analysis placed strain FSN23^T as a distinct lineage, closely related to K. aluminosa and K. jejuensis.
• The strain possessed LL-diaminopimelic acid in its cell wall, with glucose and ribose as major whole cell sugars.
• Key polar lipids, menaquinone (MK-9(H₄)), and major fatty acids (anteiso-C_15:0 and iso-C_16:0) were identified.

Conclusions:

• Strain FSN23^T possesses unique taxonomic properties differentiating it from recognized Kribbella species.
• The data strongly support the classification of strain FSN23^T as a representative of a novel species, Kribbella sindirgiensis sp. nov.