Myco- and microorganisms in the tuberculosis pathology of the common ash in Ukraine and interaction between them

Attention is focused on the fact that in recent years there has been epiphytotic dieback out of many species forest woody plants both Ukraine and other countries world, which a dynamic character tendency to grow. In deep pathology this phenomenon, phytopathogenic bacteria, have high reproduction energy can penetrate plant from outside cause pathological process as vital obligates, were left without attention. It established most common harmful disease ash tuberculosis. The causative agent bacterium Pseudomonas syringae pv. savastanoi Gard. affects trunks, branches shoots, inflorescences ash. Bacteria sp., fluorescens Mig., Van., Erwinia herbicola Eh., Xanthomonas sp. isolated tuberculous concomitant myco- microbiota micromycetes Cladosporium cladosporiodes Fres., Ulocladium botrytis Preus., Mycelia sterilia (dark), (orange), Fusarium heterosporum Lin., W., Cylindrocarpon didymium Har., etc. mechanism systemic relationships components regulation (self-regulation) pathogenicity aggressiveness obligates investigated. prospects expediency using antagonistic properties microorganisms biological products based them for prevention protection tree plantations bacterial pathogens. shown multifaceted phenomenon with interrelated processes an infectious non-infectious nature. need distinguish between etiology pathogenesis negative indicated, is, not mix factors lead weakening ordinary (factors catalyzing disease) its dieback. Keywords: fungi, ash, antagonism, savastanoi.