Mikrobiol. Z. 2019; 81(5):27-35.
doi: https://doi.org/10.15407/microbiolj81.05.027

Influence of Hechachlorobenzene on Microbiota of Chernozem Soil

Yamborko N.A., Dimova M.I., Iutynska G.O.

Zabolotny Institute of Microbiology and Virology, NAS of Ukraine
154 Akad. Zabolotny Str., Kyiv, 03143, Ukraine

Many research has been devoted to the influence of organochlorine pesticides (OCP) on soil microorganisms, but there is little information available on effect of different levels of contamination with hexachlorobenzene (HCB) on soil microbiota. The purpose of this study was to investigate the influence of various doses of HCB on microbiota of chernozem soil. Methods. Quantity of microorganisms was assessed using the method of sowing tenfold dilutions of the soil suspension on agarified nutrient media and assessing the number of colony-forming units (CFUs). The results of the research showed that the HCB effect on microbial quantity of functional groups and their ratio was negative. The most susceptible to HCB action were cellulolytic fungi and streptomycetes, the most stable ones − soil micromycetes. Conclusions. HCB effect disrupts both the mechanisms as resistance and flexible stability of microbial communities.

Keywords: hechachlorobenzene, soil microniota, resistance, flexible stability, pedotrophics, amylolytics, oligonitrotrophic and nitrogen-fixing bacteria, phosphate-mobilizing bacteria, streptomycetes, cellulolytic fungi, micromycetes.

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