[Antagonistic activity of Bacillus amyloliquefaciens subsp. plantarum IMV B-7404 and BIM B-439D strains towards pathogenic bacteria and micromycetes].

In this study the antagonistic activity of strains Bacillus amyloliquefaciens subsp. plantarum IMV B-7404 and BIM B-439D against bacterial and fungal pathogens of agricultural crops has been researched. It is shown that both strains of bacilli demonstrated a high level of antagonism to the vascular bacteriosis pathogen, average level of antagonism to micromycetes--root rot pathogens. To ofiobulez pathogen strain B. amyloliquefaciens subsp. plantarum BIM B-439D was more active. Cultural liquid of this strain effectively inhibited the spore's germination of pathogenic micromycetes Penicillium expansum and Botrytis cinerea. Both strains of bacilli synthesized several hydrolytic exoenzymes: proteases, amylases, β-glucanases, chitinases and xylanases. The obtained data suggest the possibility of expanding the range of strain B. amyloliquefaciens subsp. plantarum BIM B-439D application for plant protection, as well as the need for further researches of the exometabolites spectrum of strain B. amyloliquefaciens subsp. plantarum IMV B-7404 and their biological activity in order to create an effective bioformulation for crop protection.