Nonomuraea cypriaca sp. nov., isolated from soil

Area of Science:

• Microbiology
• Genomics
• Taxonomy

Background:

• Actinobacteria are crucial soil microorganisms with diverse metabolic capabilities.
• The genus Nonomuraea comprises spore-forming bacteria with significant ecological roles.
• Accurate taxonomic classification is essential for understanding microbial diversity and function.

Purpose of the Study:

• To isolate and characterize a novel actinobacterium from Cypriot soil.
• To determine the taxonomic placement of the novel isolate using polyphasic methods.
• To propose a new species within the Nonomuraea genus.

Main Methods:

• Isolation and cultivation of actinobacteria from soil samples.
• Polyphasic characterization including chemotaxonomy, morphology, and 16S rRNA gene sequencing.
• Genomic analysis including genome size, gene content, and G+C content determination.
• Phylogenetic analysis and calculation of average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH).

Main Results:

• A novel actinobacterium, strain K274^T, was isolated from soil in Cyprus.
• Strain K274^T exhibited chemotaxonomic and morphological traits consistent with the Nonomuraea genus.
• Phylogenetic analysis placed strain K274^T as a distinct lineage, closely related to Nonomuraea zeae.
• Genomic data revealed a genome size of 11.5 Mbp with 11,848 protein-coding genes and a G+C content of 69.7 mol%.
• ANI and dDDH values were below established thresholds, supporting the designation of a new species.

Conclusions:

• Strain K274^T represents a novel species within the Nonomuraea genus.
• The proposed name for the novel species is Nonomuraea cypriaca sp. nov.
• This discovery contributes to the understanding of microbial diversity in Mediterranean ecosystems.