The Impact of Pesticides on the Microbial Community of Agrosoddy-Podzolic Soil

Autor: M. N. Maslov, Andrey A. Belov, Andrey L. Stepanov, Rostislav Streletskii, Angelika Astaykina, Victor Gorbatov
Rok vydání: 2020
Předmět:
Zdroj: Eurasian Soil Science. 53:696-706
ISSN: 1556-195X
1064-2293
DOI: 10.1134/s1064229320050038
Popis: The impact of three types of pesticides (herbicide metribuzin, insecticide imidacloprid, and fungicide benomyl) on the structure of microbial complexes and indicators of biological activity of agrosoddy-podzolic soil (Moscow oblast) has been assessed using the method of next-generation sequencing (NGS). The pesticides have been applied both separately and together at one- and tenfold rates. It has been found that pesticides have a greater impact on the fungal community in comparison with the prokaryotic community; in the latter, only changes in the abundances of the phyla of Actinobacteria and Proteobacteria have been observed. The study of fungal communities with the use of molecular-genetic analysis has revealed two dominant divisions of fungi in all soil samples: Ascomycota (72.6 ± 8.0%) and Basidiomycota (26.0 ± 7.7%). Moreover, in the samples treated with tenfold rate of pesticides (both in mixture and separately), the abundances of representatives of the Basidiomycota division have increased. Pesticide application has a short-term stimulating effect on the carbon content of microbial biomass. It has been shown that insecticide imidacloprid stimulates nitrogen fixation, whereas other types of pesticides do not affect this factor.
Databáze: OpenAIRE
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