Biomedical subjects

H O Iutyns'ka

Publications and source records attributed to H O Iutyns'ka.

5 recordsLinked to original sources

PubMedDate not supplied

[The resistance of soil microorganisms to soil pollution by heavy metals].

Microbial communities of grey podzolized soil of Left-Bank Ukraine are characterized by high potential resistance to pollution with heavy metals: above 40% of organotrophic microorganisms are capable to resist to pollution with a mixture of heavy metals (Cu2+, Cd2+, Pb2+, Zn2+) in a dose of 20 MPC of each metal. Relative amount of resistant microorganisms in polluted soil increases up to 93%. White zeolites and biohumus are promising for reclamation of soils polluted with heavy metals. They decrease toxic effect of heavy metals on soil microflora and promote development of microflora resistant to pollution.

Colony Count, Microbial↗

PubMedDate not supplied

[The effect of biostimulants and fungicides on the growth parameters of natural associations of soil microorganisms].

Biostimulants ivin and emistym take positive effect on the growth characteristics of natural association of soil microorganisms: they increase the specific growth rate, the number of generations, decrease the lag-phase and duration of redoubling the number of microorganisms. Presence of fungicides in the medium inhibits the growth of microorganisms. Under combined use of biostimulants and fungicides one cannot reveal the negative effect of fungicides on the natural associations of microorganisms, however the stimulating action of growth-regulating substances decreases.

Culture Media↗

PubMedDate not supplied

[Use of biological stimulants to decrease negative effect of pesticides on the soil microflora].

Natural and synthetic biostimulants have been studied for their effect on resistance of soil microbe associations to pesticides. It has been shown that in the presence of growth-stimulating preparations (ivin, emistym, agrostimulin) in the microbial groups the number of microorganisms resistant to such fungicides as phenpiclonyl, fluodioxonyl, diphenoconasol increases. The activity of redox-systems which can initiate the oxidative destruction of pesticides increased in microbial associations under the simultaneous use of biostimulants and fungicides.

Depression, Chemical↗

PubMedDate not supplied

[Modeling of dynamics of microorganisms quantity in the soil polluted by heavy metals].

Microflora of soils polluted by heavy metals was the subject of monitoring investigations. Basing on the experimental data obtained with the use of interactive system ASTRID by the method of group accounting of arguments, mathematical models were constructed which describe the dynamics of microorganisms quantity, depending on the number of ecological factors and presence of heavy metals in the soil. The models allow one to predict the number of microorganisms in the soil under certain parameters of the environment, to determine "critical" deviations from the predicted values as well as to renew the intermediate data for obtaining uniform series of ecological researches. Prospects of the use of the inductive approach for modeling of microbiological processes in the soil have been demonstrated.

Environmental Monitoring↗

PubMedDate not supplied

[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. The exceeding of the recommended doses of these drugs significantly increases gene-toxical loading. This evidences for a necessity to revise agrotechnologies in the direction of decrease of the existing standard.

Escherichia coli↗