Researching of phenolic substances as potential markers of viral diseases of common bean

Abstract

In viruses infected plants, physiological changes occur before the appearance of primary visual diagnostic features. Bean plants were investigated for the presence of viral infection and the presence of mixed infection was established. It is shown that the initial stages of viral infection are accompanied by a decrease in the content of carotenoids and chlorophyll leaves, as well as a qualitative change in the composition of phenylpropanoid synthesis products. Thus, three groups of phenolic substances are identified in the bean leaves, among which compounds are markers of mixed viral infection caused by common bean mosaic virus and bean yellow mosaic virus, a marker of no viral infection, and a group of substances that do not have a pronounced viral load. Bean common mosaic virus was identified by the presence of bean common mosaic viruses and bean yellow mosaic viruses. Therefore, we have identified potential biochemical markers of viral infection in common bean leaves.