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Article

Metabolically Active Prokaryotic Complex in Grassland and Forests’ Sod-Podzol under Polycyclic Aromatic Hydrocarbon Influence

Department of Soil Biology, Lomonosov Moscow State University, 1–12, GSP-1, Leninskie Gory, 119991 Moscow, Russia
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Author to whom correspondence should be addressed.
Academic Editor: Oleg V. Menyailo
Forests 2021, 12(8), 1103; https://doi.org/10.3390/f12081103
Received: 8 June 2021 / Revised: 13 August 2021 / Accepted: 16 August 2021 / Published: 18 August 2021
(This article belongs to the Special Issue Forest Soil Carbon and Climate Changes)
Molecular genetic techniques (FISH, RT-PCR, and metagenomic analysis) were used to investigate the comparative functional biodiversity in the prokaryotic complex in grassland and forests’ sod-podzol under polycyclic aromatic hydrocarbon influence. The polluted samples showed a decrease in the biomass of the prokaryotic community representatives and a change in the metabolically active dominants–representatives of the Bacteria and Archaea domains compared to the control samples. The suppression of the metabolic activity of prokaryote cells under the influence of PAHs in sod-podzolic soil under meadow vegetation was more pronounced compared to soils under forest vegetation. The representatives of prokaryotes that are sensitive and resistant to the studied PAHs were identified. The representatives of the phylogenetic groups from the bacterial complex resistant to PAH pollution were Proteobacteria (Alphaproteobacteria), Bacteroidetes, Firmicutes, Chloroflexi, and Thaumarhaeota in the archaeal complex. Representatives of the phylum Acidobacteria and Actinobacteria (Streptosporangiales) are noted among those sensitive to PAH contamination. The presence and expression of the functional alkane monooxygenase (alkB) gene were established in all the experimental variants studied. In the plant variants, the number of copies of alkB genes increased by an order of magnitude and the biomass of metabolically active prokaryotic representatives with the functional alkB gene doubled compared to the unpolluted territories. The copy number index of the alkB gene can be used as one of the parameters when characterizing an ecosystem for the presence of PAH pollutants. View Full-Text
Keywords: soil; contaminated PAHs; metabolically active prokaryotic complex; in situ hybridization (FISH); high-throughput sequencing; metagenomic analysis soil; contaminated PAHs; metabolically active prokaryotic complex; in situ hybridization (FISH); high-throughput sequencing; metagenomic analysis
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MDPI and ACS Style

Manucharova, N.A.; Pozdnyakov, L.A.; Vlasova, A.P.; Yanovich, A.S.; Ksenofontova, N.A.; Kovalenko, M.A.; Stepanov, P.Y.; Gennadiev, A.N.; Golovchenko, A.V.; Stepanov, A.L. Metabolically Active Prokaryotic Complex in Grassland and Forests’ Sod-Podzol under Polycyclic Aromatic Hydrocarbon Influence. Forests 2021, 12, 1103. https://doi.org/10.3390/f12081103

AMA Style

Manucharova NA, Pozdnyakov LA, Vlasova AP, Yanovich AS, Ksenofontova NA, Kovalenko MA, Stepanov PY, Gennadiev AN, Golovchenko AV, Stepanov AL. Metabolically Active Prokaryotic Complex in Grassland and Forests’ Sod-Podzol under Polycyclic Aromatic Hydrocarbon Influence. Forests. 2021; 12(8):1103. https://doi.org/10.3390/f12081103

Chicago/Turabian Style

Manucharova, Natalia A., Lev A. Pozdnyakov, Anastasiya P. Vlasova, Anastasiya S. Yanovich, Natalia A. Ksenofontova, Maria A. Kovalenko, Pavel Y. Stepanov, Alexander N. Gennadiev, Alla V. Golovchenko, and Alexey L. Stepanov. 2021. "Metabolically Active Prokaryotic Complex in Grassland and Forests’ Sod-Podzol under Polycyclic Aromatic Hydrocarbon Influence" Forests 12, no. 8: 1103. https://doi.org/10.3390/f12081103

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