THE RHIZOSPHERE OF PLANTS AS A SOURCE FOR ISOLATING STRAINS FOR THE SAFE DEGRADATION OF ORGANIC WASTE

The amount of organic waste produced by the cities is huge and growing every year. Natural degradation of these wastes takes time and occupy large areas for depositing. Landfills for solid household waste and sewer sludge settling fields pollute territories, poison groundwater and emit gases, which create discomfort for the population living near the waste depositing sites. At the same time, a significant part of household waste is represented by easily decomposable organic matter, the uncontrolled rotting of which is not only a source of the stench, but also the nutrients for the proliferation of pathogenic microflora. Since the wastes were once in contact with human, the presence of the microorganisms pathogenic to human is unavoidable. Waste recycling is an important task in human economic activity. Technologies for accelerating of controlled microbial decomposition of the organic component of the wastes are especially important. Biopreparations based on nonpathogenic bacteria and fungi make possible to process large areas of landfills, due to the ability of microorganisms to multiply as long as the substrate contains needed organic matter amount. In the process of multiplication, these introduced microorganisms outcompete the pathogenic microflora. Plant is one of the promising sources of the safe microorganisms, which effectively decompose household waste. The rhizosphere of plants harbors a large and diverse set of microorganisms with a spectrum of lytic enzymes for decomposition of various organic compounds. An additional advantage of these microorganisms may be the plant growth stimulation, which can occur in the substrate processed by these beneficial bacteria.