Pozhylov I. Biodiversity of emaraviruses of Rosaceae and Poaceae families plants in Ukraine and their properties

Representatives of the genus Emaravirus are highly harmful pathogenic agents of agricultural and ornamental crops, which lead to a decrease in yield, deterioration of fruit quality, decrease in aesthetic appeal and death of affected plants. Emaraviruses are objects of of increased scientific interest from the point of view of fundamental science due to the peculiarities of the organization of their genetic information, mechanisms of evolution and biological properties. Research on the detection of emaraviruses and the study of their properties has not been conducted in Ukraine. The aim of the work was the identification of emaraviruses of plants of the Rosaceae and Poaceae families in Ukraine and the study of their molecular biological properties. The tasks of the research were: to screen plants by visual symptoms in the agro- and urban coenoses of Ukraine; identification of emaraviruses using complementary virological research methods: molecular-biological and serological; phylogenetic analysis of sequence fragments of Ukrainian isolates of emaraviruses; to investigate the time of divergence of Ukrainian isolates of emaraviruses from isolates from other countries; recombination analysis of sequences of Ukrainian isolates of emaraviruses; to analyze the prevalence of emaraviruses in mono- and co-infections in Ukraine. The object of the study is viruses of the genus Emaravirus: HPWMoV, RLBV, RRV, BLMaV, PCLSaV and EMARaV. The subject of the study is the biodiversity and properties of Ukrainian isolates of emaraviruses.