organs of common ash (Fraxinus excelsior L). It is shown that this important forest tree is
rather susceptible not only to different systematic and functional groups of micoand
microorganisms, but also to numerous types of harmful entomofauna. Our results
demonstrate that the most common and dangerous ash disease is tuberculosis. Its causative
agent–Pseudomonas syringae pv. savastanoi–affects trunks, branches and shoots as well …