Abundance and Diversity of Prokaryotic Communities of Dust Aerosol and Urban Soils in the Territory of MoscowстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 1 мая 2024 г.
Аннотация:A comprehensive quantitative and qualitative characterization of prokaryotic communities of solidatmospheric fallout (dust aerosol) and soils in the areas with different anthropogenic loads within the territoryof Moscow was obtained. The total number of bacteria in the studied samples of solid atmospheric fallouts(SAF) was lower than the number of bacteria in soil samples; actinomycete mycelium was not found in dustsamples, although it was found in soil samples. The number of culturable saprotrophic bacteria in dust sampleswas an order of magnitude lower than in Urbic Technosols taken at the same plots. Representatives of thegenus Micrococcus dominated the culturable bacteria in the dust aerosols, while representatives of the phylumProteobacteria dominated in soils. Representatives of the Enterobacteriaceae family were found in the dustsamples, among which there were species that are potential human pathogens. The maximum biodiversity ofbacteria of the Enterobacteriaceae family was recorded in the dust samples taken in areas with increasedanthropogenic and transport load. The sanitary-indicative bacterium Escherichia coli was found in all samplesof the dust and Urbic Technosols; its content varied from 10 to 100 CFU/g, which corresponds to themoderate degree of epidemic danger. Ecological indices calculated for prokaryotic communities in situ (barcodingof the 16S rRNA gene) indicate a lower taxonomic diversity of SAF prokaryotic communities in comparisonwith communities of closely spaced Urbic Technosols.