Abstract
The article presents experimental data on the species composition of fungal and viral pathogens in the conditions of the secondary range of Lupinus polyphyllus . Tobacco mosaic virus, Bean yellow mosaic virus, Bean common mosaic virus and Pea enation mosaic virus were diagnosed on Lupinus polyphyllus for the first time. The issues related to the peculiarities of the adaptability of viruses to invasive plant species are discussed. The preventive role of vectors ( Aphididae ) in the expansion of pathogens and the widening of the spectrum of host plants (susceptible species) is emphasized. Interaction with vectors, including their non-specific species, is one of the mechanisms of virus adaptability, their expansion into new regions and the formation of new pathosystems with invasive plant species. It is concluded that based on the analysis of trophic connections of vectors, it is possible to prognosticate the search for the most effective variants of harmful organisms for the biocontrol of L. polyphyllus .
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