气候变化领域集成服务门户(CCPortal): Biodegradation of MC252 polycyclic aromatic hydrocarbons and alkanes in two coastal wetlands

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DOI	10.1016/j.marpolbul.2020.111319
	Biodegradation of MC252 polycyclic aromatic hydrocarbons and alkanes in two coastal wetlands
	Rodrigue M.; Elango V.; Curtis D.; Collins A.W.; Pardue J.H.
发表日期	2020
ISSN	0025326X
卷号	157
英文摘要	Complementary microbial and geochemical assessment techniques investigated the biodegradation of PAHs and alkanes in salt marshes impacted by crude oil following the Macondo spill. Contamination was observed in the top 10 cm of the marsh profile based on PAH analysis and measurement of the δ13C signature of impacted marsh soils. Measurement of evolution of 13C depleted CO2 indicated mineralization of crude oil ranging from 2.7–12.1 mg CO2-C/m2-hr. Changes in weathering ratios of alkylated phenanthrenes and dibenzothiophenes indicated loss of these 3-ring PAHs consistent with biodegradation. A diverse microbial population was observed at both locations dominated by Gammaproteobacteria and including known hydrocarbon degraders such as Marinobacter and Alcanivorax. There was shared richness between sites and across seasons but results suggested substantial turnover of phylotypes in space and time. Biodegradation of alkanes and alkylated PAHs occurred when oxygen was provided in laboratory reactors but not in the absence of oxygen. © 2020
英文关键词	Biodegradation; Gulf Coast; MC252 oil; PAHs; Stable isotopes
语种	英语
scopus关键词	Biodegradation; Carbon dioxide; Crude oil; Oxygen; Paraffins; Wetlands; Coastal wetlands; Dibenzothiophenes; Gammaproteobacteria; Geochemical assessments; Hydrocarbon degraders; Laboratory reactors; Microbial populations; Space and time; Polycyclic aromatic hydrocarbons; alkane derivative; benzothiophene derivative; carbon 13; carbon dioxide; petroleum; phenanthrene derivative; polycyclic aromatic hydrocarbon; alkane; hydrocarbon; petroleum; polycyclic aromatic hydrocarbon; alkane; bacterium; biodegradation; coastal wetland; crude oil; marine pollution; mineralization; PAH; saltmarsh; Alcanivorax; Article; biodegradation; chemical analysis; controlled study; Gammaproteobacteria; Marinobacter; mineralization; nonhuman; oil spill; seashore; species richness; water contamination; wetland; bioremediation; wetland; Alcanivorax; Gammaproteobacteria; Marinobacter; Alkanes; Biodegradation, Environmental; Hydrocarbons; Petroleum; Petroleum Pollution; Polycyclic Aromatic Hydrocarbons; Wetlands
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/148856
作者单位	Department of Civil & Environmental Engineering, Louisiana State University, Baton Rouge, LA 70803, United States; Hazardous Substance Research Center, Louisiana State University, Baton Rouge, LA 70803, United States
推荐引用方式 GB/T 7714	Rodrigue M.,Elango V.,Curtis D.,et al. Biodegradation of MC252 polycyclic aromatic hydrocarbons and alkanes in two coastal wetlands[J],2020,157.
APA	Rodrigue M.,Elango V.,Curtis D.,Collins A.W.,&Pardue J.H..(2020).Biodegradation of MC252 polycyclic aromatic hydrocarbons and alkanes in two coastal wetlands.Marine Pollution Bulletin,157.
MLA	Rodrigue M.,et al."Biodegradation of MC252 polycyclic aromatic hydrocarbons and alkanes in two coastal wetlands".Marine Pollution Bulletin 157(2020).