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Bioremediation of the tobacco waste-contaminated soil by Pseudomonas sp HF-1: nicotine degradation and microbial community analysis

文献类型： 外文期刊

作者： Wang, Xin 1 ; Tang, Lu 1 ; Yao, Yanlai 2 ; Wang, Haixia 1 ; Min, Hang 1 ; Lu, Zhenmei 1 ;

作者机构： 1.Zhejiang Univ, Inst Microbiol, Coll Life Sci, Hangzhou 310058, Zhejiang, Peoples R China

2.Zhejiang Acad Agr Sci, Inst Environm Resource Soil & Fertilizer, Hangzhou 310021, Zhejiang, Peoples R China

关键词： Pseudomonas sp HF-1;Tobacco waste-contaminated soil;Bioremediation;Microbial community;Real-time qPCR

期刊名称：APPLIED MICROBIOLOGY AND BIOTECHNOLOGY （ 影响因子：4.813； 五年影响因子：4.697 ）

ISSN： 0175-7598

年卷期： 2013 年 97 卷 13 期

页码：

收录情况： SCI

摘要： The highly effective nicotine-degrading bacterium Pseudomonas sp. HF-1 was augmented into the tobacco waste-contaminated soil to degrade nicotine and evaluate the effect of the bioremediation. Comparing with non-adding (NA) systems, the treatments with addition of strain HF-1 (TA) exhibited considerably stronger pollution disposal abilities and higher stability of pH value and moisture content, especially in groups containing a large quantity of tobacco waste. The denaturing gradient gel electrophoresis (DGGE) profiles showed that the Shannon-Wiener index decreased with increasing wastes in the NA treatments, while a gradual increase was found in the TA groups. A comparison of sequences from DGGE bands demonstrated that there were differences in the dominant microbial species between the two treatments, suggesting that strain HF-1 could persist in the soil and enhance the efficiency of tobacco waste disposal. The results of real-time fluorescence quantitative PCR (RT-qPCR) also indicated that strain HF-1 existed in the TA systems and grew with relative high quantities. In conclusion, the nicotine-degrading strain HF-1 played a leading role in the bioremediation of the tobacco waste-contaminated soil and influenced the dynamics and structure of the microbial community.

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