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Crude oil treatment leads to shift of bacterial communities in soils from the deep active layer and upper permafrost along the China-Russia Crude Oil Pipeline route

Yang, Sizhong ; Wen, Xi ; Zhao, Liang ; Shi, Yulan ; Jin, Huijun Johnson, Stephen J.

PloS one, 2014-05, Vol.9 (5), p.e96552 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Crude oil treatment leads to shift of bacterial communities in soils from the deep active layer and upper permafrost along the China-Russia Crude Oil Pipeline route
Autor: Yang, Sizhong ; Wen, Xi ; Zhao, Liang ; Shi, Yulan ; Jin, Huijun
Johnson, Stephen J.
Assuntos: Active layer ; Arthrobacter ; Bacteria ; Bacteria - genetics ; Bacteria - metabolism ; Biodegradation ; Biodegradation, Environmental ; Biology and Life Sciences ; Bioremediation ; Buried pipes ; China ; Cold ; Communities ; Community composition ; Contamination ; Crude oil ; Degradation ; Deoxyribonucleic acid ; DNA ; DNA, Bacterial - genetics ; Ecology and Environmental Sciences ; Ecosystem ; Engineering research ; Hydrocarbon-degrading bacteria ; Laboratories ; Microorganisms ; Migration ; Oil spills ; Paenibacillus ; Permafrost ; Permafrost - microbiology ; Petroleum ; Petroleum - microbiology ; Petroleum industry ; Petroleum pipelines ; Petroleum Pollution ; Pipe lines ; Polycyclic aromatic hydrocarbons ; Polycyclic Aromatic Hydrocarbons - metabolism ; Russia ; Sediment pollution ; Soil amendment ; Soil contamination ; Soil Microbiology ; Soil microorganisms ; Soil pollution ; Soils ; Taxa
É parte de: PloS one, 2014-05, Vol.9 (5), p.e96552
Notas: Conceived and designed the experiments: SY XW HJ. Performed the experiments: SY XW LZ YS. Analyzed the data: XW SY. Wrote the paper: SY XW HJ.
Competing Interests: The authors have declared that no competing interests exist.
Descrição: The buried China-Russia Crude Oil Pipeline (CRCOP) across the permafrost-associated cold ecosystem in northeastern China carries a risk of contamination to the deep active layers and upper permafrost in case of accidental rupture of the embedded pipeline or migration of oil spills. As many soil microbes are capable of degrading petroleum, knowledge about the intrinsic degraders and the microbial dynamics in the deep subsurface could extend our understanding of the application of in-situ bioremediation. In this study, an experiment was conducted to investigate the bacterial communities in response to simulated contamination to deep soil samples by using 454 pyrosequencing amplicons. The result showed that bacterial diversity was reduced after 8-weeks contamination. A shift in bacterial community composition was apparent in crude oil-amended soils with Proteobacteria (esp. α-subdivision) being the dominant phylum, together with Actinobacteria and Firmicutes. The contamination led to enrichment of indigenous bacterial taxa like Novosphingobium, Sphingobium, Caulobacter, Phenylobacterium, Alicylobacillus and Arthrobacter, which are generally capable of degrading polycyclic aromatic hydrocarbons (PAHs). The community shift highlighted the resilience of PAH degraders and their potential for in-situ degradation of crude oil under favorable conditions in the deep soils.
Editor: United States: Public Library of Science
Idioma: Inglês

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Crude oil treatment leads to shift of bacterial communities in soils from the deep active layer and upper permafrost along the China-Russia Crude Oil Pipeline route

Yang, Sizhong ; Wen, Xi ; Zhao, Liang ; Shi, Yulan ; Jin, Huijun Johnson, Stephen J.

United States: Public Library of Science

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