摘要
从某农药厂废水处理池活性污泥中分离到1株以乐果为唯一碳源生长的细菌,命名为L3.根据其生理生化特征和16S r RNA(GenBank Accession No.EU004590)基因序列分析,将该菌株初步鉴定为副球菌属(Paracoccus sp.).该菌株能在6h内降解100mg/L的乐果至检出限以下.L3降解乐果的最适pH值为7.0,最适温度为35℃.土壤试验表明,L3可在3d内降解250mg/kg乐果至检出限以下.
A bacterial strain, L3, capable of utilizing dimethoate as sole carbon source was isolated from activated sludge collected from wastewater-treating system of a pesticide manufacturer. This bacterium was identified as Paracoccus sp. according to its physiological and biochemical analysis and the analysis of its 16S rRNA sequence （GenBank Accession No. EU004590）. This bacterium could degrade 100mg/L dimethoate to an undetectable level in 6h. The optimal pH and temperature for the degradation were 7 and 35℃, respectively. Meanwhile, strain L3 also worked well in soil, which could degrade 250 mg/kg dimethoate to an undetectable level in 3 days.
出处
《中国环境科学》
EI
CAS
CSCD
北大核心
2008年第11期994-998,共5页
China Environmental Science
基金
科技部农业微生物菌种资源整理整合及共享项目(2005DKA21201-2)
农业部农业生态环境项目(农财发[2007]52号)
关键词
乐果
生物降解
副球菌属
dimethoate
biodegradation
Paracoccus sp.
作者简介
王堃（1983-），男，山西运城人，南京农业大学生命科学学院硕士研究生。主要研究方向为环境微生物学．
责任作者，教授，lsp@njau．edu．cn
