INFLUENCE OF COBALT NANOPARTICLES ON BACILLUS CEREUS STRAIN TO BE USED IN VEGECULTURE
When determining the practicability of using some bacteria-plant systems in agriculture it is necessary to have a comprehensive approach to develop ways of increasing their efficiency by means of endogenous (plant species and varieties) and exogenous (biodrugs, growth regulators, macro- and micro-fertilizers) regulation of plant-microbial interactions when using biologically active substances in specific conditions. Considering nanoparticles as the basis of composites with natural biopolymers and bacteria, the normal functioning of the plant organism can be significantly increased, but it is necessary to select the concentrations, sizes, and structure of nanoparticles where bacteria will be active. Our goal is to include nanoparticles of biogenic metals in this scheme. Influencing the genetic potential of seeds on the one hand and the activity of micro flora on the other hand, they should increase the plants tolerance to diseases and improve the soil for a long time. This is important for a greenhouse farm. Peculiarities of growing vegetables in the protected ground are large expenses to create the microclimate, lots and lots of various dangerous for the person chemical preparations and annual ground change in order to avoid accumulation of pests and diseases. The profitability of production in these conditions can be ensured only by using the latest achievements of science and technology and the effective organization of production. We developed a test procedure and perfected a technology of using nanoparticles of biogenic metals as biologically active and environmentally safe materials. The technique of isolating Bacillus cereus strain was studied. It is established that the nature of nanoparticles effect on the growth of clinical strains and the degree of the antibacterial effect depends on the type of nanoparticles, their concentration, and exposure time.