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
第一作者: Wang, Xin
作者: Wang, Xin;Tang, Lu;Wang, Haixia;Min, Hang;Lu, Zhenmei;Yao, Yanlai
作者机构:
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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