Distribution of bacteriosis in- duced by Erwinia amylovora in various types of plants of Polissya biocenosis under condition of pathogen contamination by bacteriophage

Abstract

The study results of the spread of bacterial disease induced by Erwinia amylovora, which is the carrier of bacteriophages on pears, quince, hawthorn, hazel and other types of plants in the environment in different climatic regions of Polissya. Based on the survey a detailed assessment of the affected plant habitus, based on their growth and development during the growing season is presented. At the same time, plants, leaves, branches, fruits and root system were analyzed for the detection of pathogens. It was investigated that blackening of leaves and drying of tops and lateral branches in pears, apple and stone species of plants are the main symptoms of fireblight. Characteristically, the middle tier of plants is often affected by pathogens in a mixed complex infection. This complex infectious and pathological process is especially evident in recent years under conditions of warming up the climate. Microbiological, virological and environmental methods were used in the work. It is important that new opportunities for the accumulation of phages are opened on the basis of taking into account the development of bacterial disease in various plant species, which are common in forest ecosystems, parks, reserves and agrocenoses. Such studies, in our opinion, create the preconditions for the discovery of plant-reservoirs of bacteria and its phages in combination with phytovirused, microscopic fungi. Taking into account the considerable spread of fireblight in plants, an important task today in the agro-industrial complex is to use stable varieties of crops against the pathogen of this disease.