Effect of methyl parathion on nitrous oxide production: A laboratory study

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• 作者：Marcelo Rojas-Oropeza^a ; Francisco J. Ferná ; ndez^b ; Luc Dendooven^c ; Nathalie Cabirol^a ; ^{natcabirol@yahoo.com}
• 关键词：Contaminated soil ; Methyl parathion ; nirK gene ; Nitrous oxide ; TGGE
• 刊名：Journal of Environmental Management
• 出版年：2012
• 出版时间：March, 2012
• 年：2012
• 卷：95
• 期：supp_S
• 页码：S25-S30
• 全文大小：1K

文摘

We investigated the diversity of a denitrifying gene (nirK) and the emission of CO₂ and N₂O, in a ¡°chinampa?soil contaminated with methyl parathion. Soil at 40 % of water holding capacity was spiked with methyl parathion at four concentrations (i.e. 0, 0.7, 1.47 and 4.27?g?kg^??dry?soil), while emission of N₂O and CO₂ and nirK diversity was determined after 0, 1, 14, 30, 60 and 90 days. The emission of N₂O on a daily base and the cumulative emission of CO₂ was not affected by the different concentrations of methyl parathion applied to soil. The diversity of the nirK gene, determined by using temperature gradient gel electrophoresis (TGGE), decreased with increased methyl parathion application. It was found that methyl parathion had effect on the emissions of N₂O and CO₂, and reduced the diversity of the nirK gene. Consequently, the reduced diversity of the nirK gene could affect the emission of N₂O.