Notice of RetractionBiodegradation of Organophosphorus Pesticide and Simultaneous Denitrification about Bacillus cereus

2011 5th International Conference on Bioinformatics and Biomedical Engineering Pub Date : 2011-05-10 DOI:10.1109/ICBBE.2011.5780800

Y. Ni, Pan Wang, Junzhong Yang, Yongze Yuan, Li Xiong, Wenjing Xiao, Deli Liu, Xianfang Wen, Hailing Xi, Yongliang Zheng

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Abstract

A strain degradating pesticide efficiently was isolated from the soil was long-term pesticide-contaminated near the pesticide factory of Xiantao City, Hubei Province. It was named as HS-MP13 and characterized. The results indicated that the HS-MP13 strain was most similar to Bacillus cereus based on the results of morphologic characteristics, physiological and biochemical properties and phylogenic analysis of 16S rDNA sequence. The strain HS-MP13 was identified as B. cereus preliminarily. Under aerobic denitrification conditions, we have determined the degradation capacity for methyl parathion (MP) and denitrifying activity of HS-MP13 in the special medium with an initial concentration of 10 mM (140 mg/L) NO3--N and an initial concentration of 100 mg/L MP. The degradation rates of nitrates and MP within 12 hours were found to be 77% and 100%, respectively. It indicated that B. cereus was able to act simultaneously degradation of MP and denitrification under aerobic conditions and it may be a good candidate for aerobic wastewater treatment.

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有机磷农药生物降解及蜡样芽孢杆菌同步反硝化的研究进展

从湖北省仙桃市农药厂附近长期被农药污染的土壤中分离到一株高效降解农药的菌株。将其命名为HS-MP13并进行了表征。结果表明，菌株HS-MP13在形态特征、生理生化特性和16S rDNA序列的系统发育分析上与蜡样芽孢杆菌最为相似。初步鉴定菌株HS-MP13为蜡样芽孢杆菌。在好氧反硝化条件下，测定了HS-MP13在初始浓度为10 mM (140 mg/L) NO3——N和初始浓度为100 mg/L MP的特殊培养基中对甲基对硫磷(MP)的降解能力和反硝化活性。12 h内硝酸盐和MP的降解率分别为77%和100%。这表明蜡样芽孢杆菌在好氧条件下具有降解MP和反硝化的双重作用，可能是好氧废水处理的良好候选者。

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2011 5th International Conference on Bioinformatics and Biomedical Engineering

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