ANTAGONISTIC ACTIVITY OF LACTOBACILLUS PLANTARUM, ISOLATED FROM PLANT SOURCES OF UKRAINE AND FRANCE, AGAINST PHYTOPATHOGENIC BACTERIA

Aim. Study of antagonistic activity of L. plantarum isolates from different geographical regions against phytopathogenic bacteria and selection of the most active isolates for development of biological preparations for plant protection. Methods. Antagonistic activity of L. plantarum was studied in vitro by agar well diffusion assay, and in vivo by inoculation of carrot explants and infection of kalanchoe plants. Results. Antagonistic activity of the studied lactic acid bacteria against phytopathogens was found both in vitro and in vivo. No relation was found in pH of cultural liquid and level of antagonistic activity in case of all test-systems. Conclusion. The level of antagonism of L. plantarum against phytopathogens varied depending on the isolate of lactobacilli, its origin, strain of phytopathogen and test-system. The most active antagonists in the majority of used test-systems were the isolates L. plantarum ОNU311, ОNU313, ОNU476, ОNU312 and ОNU12 from Ukraine and ОNU352, ОNU353 and ОNU355 from France