期刊
EURASIAN SOIL SCIENCE
卷 53, 期 5, 页码 696-706出版社
PLEIADES PUBLISHING INC
DOI: 10.1134/S1064229320050038
关键词
metribuzin; imidacloprid; benomyl; next-generation sequencing; Albic Retisols (Aric; Cutanic; Ochric)
类别
资金
- Russian Foundation for Basic Research [18-016-00130a, 18-316-00054 mol_a]
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.
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