Actinomycetes strain Streptomyces sp. Je 1-42: phylogenetic analysis, biological activity and secondary metabolite profile

  • S. I. Tistechok
  • Yu. R. Datsyuk
  • O. V. Fedorenko
  • О. М. Gromyko


Aim. Screening of new natural bioactive molecules is one of the effective approach in combating multidrug-resistant pathogens and tumor cells. The aim of this work was to study the taxonomic characteristic, biological activity and secondary metabolites production of isolate Je 1-42 from the rhizosphere of Juniperus excelsa Bieb. Methods. Microbiological, molecular genetic, high performance liquid chromatography mass spectrometry and scanning electron microscopy methods were used in this work. Results. Based on a phylogenetic analysis of the 16S rRNA and gyrB gene sequences, microbiological and physiological characterization the isolate Je 1-42 has been affiliated to the genus Streptomyces. The isolate Je 1-42 showed a wide range of antibacterial activity. The antibiotics desertomycin A, kanchanamycin A, butylcycloheptylprodigiosine and spectinabilin were annotated in the Je 1-42 extract using dereplication analysis in the database DNP. Conclusions. Actinomycetes strain Streptomyces sp. Je 1-42 is an antagonist of gram-positive, gram-negative bacteria, fungi and produces antibiotics desertomycin A, canchanamycin A, butylcycloheptylprodigiozin, spectinabilin, which has a broad spectrum of antimicrobial activity. The production of these compounds obviously determines the ability of Je 1-42 to inhibit the growth of a wide range of bacteria and fungi. The strain of Streptomyces sp. Je 1-42 was deposited in the Microbial Culture Collection of Antibiotics Producers at Ivan Franko National University of Lviv (collection number Lv 1-042).

Keywords: Streptomyces, secondary metabolites, antibacterial activity, phylogenetic analysis.


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