[Componential composition of chlororganic pollutants and state of soil microbial cenosis in soil from burial place of waste].

The authors have identified 25 chemical pollutants in soil and 12--in the chemical composition of technical waste from chemical production. Broad spectrum of pollutants and their degradation products (26 chemical components) have been also detected outside the proving ground (2 km). This fact evidences for active spreading of chlororganic toxins into neighboring areas.

[Biological degradation of sticky-gene compositions in different type soils].

The ability of native microbial associations from different types of soils to degrade sticky-gene composition which were created on the EPAA basis have been determined. The ecological safety and harmlessness of sticky-gene composition, its slow degradation by soils microorganisms and providing long-term influence (impact) of preparations introduced on plants protection have been shown. The conditions of gray forest and sod podzol soil are the most favorable for the sticky-gene composition degradation.

[Toxic and mutagenic influence of hexachlorocyclohexane and its microbial destruction products on soil microbial cenosis].

Microbial strains Pseudomonas putida 9, Stenotrophomonas maltophilia IMV B-7288 destructed hexachlorcyclohexane (HCH) isomers complex by 31.1-76.6 and 30.

[Study of mutagenic activity of hexachlorocyclohexane and products of its microbial degradation].

Mutagenic activity of hexachlorcyclohexane (HCH) was investigated. As is known, gamma-isomer of HCH has insecticidal properties. The strains of microorganisms of genera Pseudomonas, Stenotrophomonas, Bacillus decomposing HCH into 46.

[Physiological properties and taxonomic position of soil microorganisms-destructors of hexachlorcyclohexane].

Eleven (11) microbial strains capable to decompose insecticide hexachlorcyclohexane (HCH) have been isolated from microbial association resistant to chloro-organic pesticides. On the basis of investigation of morphological, cultural, physiological, biochemical characteristics and results of sequence of gene 16S rRNA it has been established, that the best strain-destructors N 3 and N 9 belong to Pseudomonas putida species, and strain N 6 belongs to Stenotrophomonas maltophilia species.

[Protective properties of avermectine complex and plant growth regulators].

Antimutagen properties of avermectine complex of Avercom synthesized by Streptomyces avermitilis UCM Ac-2161, and growth regulators of plants (GRP) of bioagrostim-extra, ivin and emistim-C have been revealed in experiments with test-cultures of Salmonella typhimurium TA 100, TA 98. Avercom and plant growth regulators neutralize by toxication 27-48% and mutagen action of pesticides on soil microbial associations by 19.0-30.

[Mutagenic action of synthetic fungicides and drugs of biological origin on microorganisms].

Gene-toxical effect of biological and synthetical fungicides on auxotrophic test-cultures of Salmonella typhimuriun TA 100 and TA 98, and Escherichia coli WP2 has been studied. Biological drugs on the basis of hytosan (mycosan and mycosan-new) act as weak mutagens. Synthetical fungicides on the basis of benomil and tiram, on the contrary, cause higher frequency of mutation.