Effects of different agricultural wastes on the dissipation of PAHs and the PAH-degrading genes in a PAH-contaminated soil
文献类型：期刊论文
| 作者 | Han, Xuemei; Zhang, Limei; He, Jizheng; Shi, Xiuzhen; Hu, Hangwei |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2017-04-01 |
| 卷号 | 172期号:0页码:286-293 |
| 关键词 | Polycyclic Aromatic Hydrocarbon Agricultural Waste Bioremediation Qpcr Pah-degrading Gene T-rflp |
| 英文摘要 | Land application of agricultural wastes is considered as a promising bioremediation approach for cleaning up soils contaminated by aged polycyclic aromatic hydrocarbons (PAHs). However, it remains largely unknown about how microbial PAH-degraders, which play a key role in the biodegradation of soil PAHs, respond to the amendments of agricultural wastes. Here, a 90-day soil microcosm study was conducted to compare the effects of three agricultural wastes (i.e. WS, wheat stalk; MCSW, mushroom cultivation substrate waste; and CM, cow manure) on the dissipation of aged PAHs and the abundance and community structure of PAH-degrading microorganisms. The results showed that all the three agricultural wastes accelerated the dissipation of aged PAHs and significantly increased abundances of the bacterial 16S rRNA and PAH-degrading genes (i.e. pdo1 and nah). CM and MCSW with lower ratios of C:N eliminated soil PAHs more efficiently than WS with a high ratio of C:N. Low molecular weight PAHs were dissipated more quickly than those with high molecular weight. Phylogenetic analysis revealed that all of the nah and C120 clones were affiliated within Betaproteobacteria and Gammaproteobacteria, and application of agricultural wastes significantly changed the community structure of the microorganisms harboring nah and C120 genes, particularly in the CM treatment. Taken together, our findings suggest that the three tested agricultural wastes could accelerate the degradation of aged PAHs most likely through changing the abundances and community structure of microbial PAH degraders. (C) 2017 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/39586]  |
| 专题 | 生态环境研究中心_土壤环境科学实验室 |
| 推荐引用方式 GB/T 7714 | Han, Xuemei,Zhang, Limei,He, Jizheng,et al. Effects of different agricultural wastes on the dissipation of PAHs and the PAH-degrading genes in a PAH-contaminated soil[J]. CHEMOSPHERE,2017,172(0):286-293. |
| APA | Han, Xuemei,Zhang, Limei,He, Jizheng,Shi, Xiuzhen,&Hu, Hangwei.(2017).Effects of different agricultural wastes on the dissipation of PAHs and the PAH-degrading genes in a PAH-contaminated soil.CHEMOSPHERE,172(0),286-293. |
| MLA | Han, Xuemei,et al."Effects of different agricultural wastes on the dissipation of PAHs and the PAH-degrading genes in a PAH-contaminated soil".CHEMOSPHERE 172.0(2017):286-293. |
入库方式： OAI收割
来源：生态环境研究中心
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