Study of harmful pathogens of woody plants in forest and park landscapes of the Black Sea coast of Russia and Abkhazia

The results of a mycological study of woody plants on the Black Sea coast of Russia and Abkhazia with molecular genetic verification of species are presented. Fungi with different life strategies have been identified - from endophytes and opportunistic pathogens to highly aggressive pathogenic forms capable of causing mass foci of the disease. The most dangerous phytopathogens are Diplodia sapinea (Fr.) P. Karst. and Botryosphaeria dothidea (Moug.) Ces. & De Not with a long endophytic phase, as well as Cryphonectria parasitica (Murrill) M.E. Barr and Gnomoniopsis spp. In cypress plantations, the most dangerous phytopathogen Seiridium cardinale (W.W. Wagener) B. Sutton & I.A.S. Gibson was not detected in the presence of a similar symptom complex. Species of the genus Pestalotiopsis with an unclear mechanism of interaction with the host plant were found, which leaves open the question of the main causative agent of Cupressus disease in the study area.

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