Research on the content of pathogenic micromycetes and benz(a)pyrene in soils of urbanized territories of Perm Krai

Emma Voronina,Svetlana Dubrovina,Tatiana Mazunina,Alevtina Balandina,O Loretts,V Kukhar,S Vinogradov,A Ruchkin,N Ojha,J.L Lopez Garcia

doi:10.1051/e3sconf/202017603013

Abstract

The content of phytopathogenic fungi and the concentration of benz(a)pyrene in soil samples located near the oil refinery has been investigated. It has been found that in the vast majority of soil samples pathogenic micromicetes are represented by genera Fusarium, Rhizoctonia, Phytophthora, which have a negative effect on crops growth. The highest content of pathogenic micromycetes, amounting to10 CFU per 1 g of soil, was found in soil samples located directly on oil spill territory. It has been found that in an overwhelming number of soil samples, the concentration of benz (a) pyrene, which belongs to organic substances of grade I hazard, exceeds the MPC. The results of the study are consistent with earlier evidence that concentrations of pathogenic micromycetes and benz (a) pyrene are higher in anthropogenic-afected soils. This is due to the negative effect of oil hydrocarbons and benz (a) pyrene on useful soil microflora, and further settlement of the released ecological niche by pathogens. The company is given recommendations on the use of soil for cultivating technical crops or its exclusion from agricultural use.

Highlights

The aim of the work is to study the content of pathogenic micromycetes and the concentration of benz(a)pyrene in agro-sod and carbonate soil exposed to oil contamination
It has been found that in most soil samples pathogenic micromicetes are represented by the genera Fusarium, Rhizoctonia, Phytophthora
Our studies confirmed the need to carry out widespread control of the accumulation of phytopathogenic micromycetes and benz (a) pyrene in agricultural soils, as well as sanitary -hygienic monitoring of the safety of feed, animal and plant products for the content of mycotoxins

Summary

Introduction

The aim of the work is to study the content of pathogenic micromycetes and the concentration of benz(a)pyrene in agro-sod and carbonate soil exposed to oil contamination.The relevance of the study is due to the increased anthropogenic influence on soil, the consequence of which is its degradation, accompanied by the death of normal microflora and accumulation of toxic substances therein, many of which have carcinogenic effects.Phytopathogenic fungi are quite common in the structure of biogeocenoses altered by human economic activity. The aim of the work is to study the content of pathogenic micromycetes and the concentration of benz(a)pyrene in agro-sod and carbonate soil exposed to oil contamination. The relevance of the study is due to the increased anthropogenic influence on soil, the consequence of which is its degradation, accompanied by the death of normal microflora and accumulation of toxic substances therein, many of which have carcinogenic effects. Phytopathogenic fungi are quite common in the structure of biogeocenoses altered by human economic activity. This group of microorganisms has a large set of resistance factors to changing habitat conditions, contributing to their migration and significant variations of seasonal patterns in ecosystems. Intensive reproduction of pathogenic micromycetes in food raw materials and foods is often accompanied by accumulation of mycotoxins, which are highly toxic secondary metabolites. Accumulating in grain or fruits, mycotoxins contaminate feed, animal body and food products of plant and animal origin

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