apple shoots

Species composition, quantitative indicators and the occurrence of bacteria and fungi associated with apple shoots in the Saratov region were studied. On the surface shoots isolated 12 species of bacteria, and 4 species of fungi, of the internal environment – 14 species of bacteria and 3 species of fungi. The most common surface associates apple shoots appeared bacterium Bacillus subtilis, Pantoea agglomerans, fungus Alternaria sp. and Fusarium tricinctum, internal environment shoots – Bacillus subtilis, Bacillus amyloliquefaciens, Penicillium sp.

Microbial associations on surfaces and internal environment on shoots of apple sorts Golden Delicious, Wealthy and Berkutovka with symptoms of fungal infections were studied. 195 strains of epiphytic and endophytic bacteria, of which 8 strains had marked antagonistic activity against phytopathogenic fungi Alternaria alternaria, Aspergillus tubiengensis, Fusarium incarnatum equiseti, Fusarium tricinctum and Phoma fungicola were isolated. Antagonistic bacterial strains are identified as Bacillus amyloliquefaciens SA77, B. badius SA68, B. gibsonii SA104, B.