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Polyphasic characterization and genomic insights into Nocardioides turkmenicus sp. nov. isolated from a desert soil

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Abstract

Strain KC13T, a novel desert-adapted, non-motile, Gram-stain-positive, rod-shaped, aerobic bacterium, was isolated from a soil sample collected from the Karakum Desert, Turkmenistan and characterised by a polyphasic approach. Phylogenetic analysis based on 16S rRNA sequences revealed that strain KC13T was a member of the genus Nocardioides, and formed a distinct cluster with Nocardioides luteus DSM 43366T (99.3% sequence identity), Nocardioides albus DSM 43109T (98.9%), Nocardioides panzhihuensis DSM 26487T (98.3%) and Nocardioides albertanoniae DSM 25218T (97.9%). The orthologous average nucleotide identity and digital DNA–DNA hybridization values were in the range of 85.8–91.0% and 30.2–35.9%, respectively, with the type strains of closely related species. The genome size of strain KC13T was 5.3 Mb with a DNA G + C content of 69.7%. Comprehensive genome analyses showed that strain KC13T, unlike its close relatives, had many genes associated with environmental adaptation. Strain KC13T was found to have chemotaxonomic and phenotypic characteristics of members of the genus Nocardioides and some differences from phylogenetic neighbours. Based on the chemotaxonomic, genomic, phenotypic and phylogenetic data, strain KC13T represents a novel species of the genus Nocardioides, for which the name Nocardioides turkmenicus sp. nov. is proposed, and the type strain is KC13T (= JCM 33525T = CGMCC 4.7619T).

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Data availability

The GenBank accession numbers of the 16S rRNA gene sequence and draft genome sequence of strain KC13T are MG770621and JAALAA000000000, respectively.

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Funding

This research was supported by Ondokuz Mayis University (OMU), project no. PYO.FEN.1901.16.001.

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HS and NS designed the research. HS performed the genomic data analysis. HS, KG, DC and NS performed the polyphasic taxonomic experiments. HS drafted the manuscript. All authors have read and approved the final version of the manuscript.

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Correspondence to Hayrettin Saygin.

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Saygin, H., Guven, K., Cetin, D. et al. Polyphasic characterization and genomic insights into Nocardioides turkmenicus sp. nov. isolated from a desert soil. Antonie van Leeuwenhoek 117, 25 (2024). https://doi.org/10.1007/s10482-023-01920-2

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  • DOI: https://doi.org/10.1007/s10482-023-01920-2

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