中文摘要：

从长期施用阿特拉津的土壤中筛选到1株能够以阿特拉津为惟一碳源生长的菌株SYSA，经生理生化特性鉴定和16SrDNA序列分析，该菌为阴沟肠杆菌（Enterobacter cloacae）。对SYSA菌的生物学特性研究表明，pH7～8，30℃时，在以阿特拉津（20mg／L）为惟一碳源的培养基上经146h培养，降解率为87％。

英文摘要：

An atrazine-degrading bacterium strain SYSA that could grow with atrazine as the sole carbon source was screened from a long-term atrazine-applying soil. It was identified as Enterobacter cloacae characterized by physiological and biochemical features as well as 16S rDNA sequence analysis. Studies on its biological characteristics indicated that 146 hours after cultured in pH 7 -8, 30℃ , and 20 mg/L of atrazine as the sole carbon source, the degradation rate of atrazine was 87%.