Microbiota is a permanent link in any ecosystem,  it performs a huge number of different metabolic and ecophysiological functions. It is therefore difficult to overestimate the positive effects of soil microorganisms on the “ecosystem health” .  First of all, they are an obligatory binder component in the cycle of carbon, oxygen, hydrogen, nitrogen, in addition, the basic elements of mineral nutrition, as well as trace elements. Microorganisms participate in the mineral nutrition of plants, keep up soil fertility, and secrete plant growth stimulators. In the natural environment microbiota is able to support the "health" of ecosystems through the influence of microbial antagonists on the phytopathogenic microorganisms. Microorganisms are able to recover soil by decomposing toxic substances and reducing the consequences of their effects. Despite the importance of this component for the ecosystem, it remains poorly understood. Our project is aimed at filling this gap.