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- W3119964281 abstract "Abstract Petroleum pollution of soils is a major environmental problem. Soil microorganisms can decompose a significant fraction of petroleum hydrocarbons in soil at low concentrations (1–5%). This characteristic can be used for soil remediation after oil pollution. Microbial community dynamics and functions are well studied in cases of moderate petroleum pollution, while cases with heavy soil pollution have received much less attention. We studied bacterial and fungal successions in three different soils with high petroleum contents (6 and 25%) in a laboratory experiment. The proportion of aliphatic and aromatic compounds decreased by 4–7% in samples with 6% pollution after 120 days of incubation but remained unchanged in samples with 25% hydrocarbons. The composition of the microbial community changed significantly in all cases. Oil pollution led to an increase in the relative abundance of bacteria such as Actinobacteria and the candidate TM7 phylum ( Saccaribacteria ) and to a decrease in that of Bacteroidetes . The gene abundance (number of OTUs) of oil-degrading bacteria ( Rhodococcus sp., candidate class TM7-3 representative) became dominant in all soil samples, irrespective of the petroleum pollution level and soil type. The fungal communities in unpolluted soil samples differed more significantly than the bacterial communities. Nonmetric multidimensional scaling revealed that in the polluted soil, successions of fungal communities differed between soils, in contrast to bacterial communities. However, these successions showed similar trends: fungi capable of lignin and cellulose decomposition, e.g., from the genera Fusarium and Mortierella , were dominant during the incubation period." @default.
- W3119964281 created "2021-01-18" @default.
- W3119964281 creator A5040198828 @default.
- W3119964281 creator A5080488252 @default.
- W3119964281 creator A5084434441 @default.
- W3119964281 creator A5085210748 @default.
- W3119964281 date "2021-01-08" @default.
- W3119964281 modified "2023-10-16" @default.
- W3119964281 title "Response of bacterial and fungal communities to high petroleum pollution in different soils" @default.
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