A new Peribacillus simplex d27.3 strain mediates antimicrobial activity through a combination of secondary metabolites, including fengycins
DOI:
https://doi.org/10.21638/spbu03.2024.206Abstract
Soil is a classical source of beneficial microorganisms. Soil microbiomes provided the overwhelming majority of antibiotic-producing strains, biocontrol agents, probiotics, and plant-protecting bacteria. The functionality of strains isolated from various soil samples is predetermined by the biosynthetic potential encoded in their genomes. Here, we describe a novel Peribacillus simplex d27.3 strain isolated from the soil sample of a pine forest in the Republic of Dagestan, Russia. P. simplex d27.3 displayed antibiotic activity against gram-positive bacteria and fungi while being inactive against the model hypersensitive gram-negative strain E. coli ΔlptD. Metabolomic analysis revealed that antimicrobial activity was partially mediated by the fengycin lipopetides (C-16 fengycin A, C-17 fengycin A, and C-16 fengycin B). In addition, the P. simplex d27.3 strain was found to produce other hydrophilic and more hydrophobic antimicrobials yet to be described. Thus, the P. simplex d27.3 strain is a producer of useful antimicrobial compounds with a high potential for application in biotechnology and agriculture.
Keywords:
Peribacillus simplex, fengycins, antibiotics, soil microbiome
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Articles of Biological Communications are open access distributed under the terms of the License Agreement with Saint Petersburg State University, which permits to the authors unrestricted distribution and self-archiving free of charge.