Biodegradation of atrazine by the novel Citricoccus sp strain TT3

文献类型： 外文期刊

第一作者： Yang, Xiaoyan

作者： Yang, Xiaoyan;Wei, Huanyu;Zhu, Changxiong;Geng, Bing

作者机构：

关键词： Atrazine;Biodegradation;Citricoccus

期刊名称：ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY （ 影响因子：6.291； 五年影响因子：6.393 ）

ISSN： 0147-6513

年卷期： 2018 年 147 卷

页码：

收录情况： SCI

摘要： A previously undescribed atrazine-degrading bacterial strain TT3 capable of growing with atrazine as its sole nitrogen source was isolated from soil at the wastewater outfall of a pesticide factory in China. Phenotypic characterization and 16 S rRNA gene sequencing indicated that the isolate belonged to the genus Citricoccus. Polymerase chain reaction (PCR) analysis revealed that TT3 contained the atrazine-degrading genes trzN, atzB, and atzC. The range for growth and atrazine degradation of TT3 was found to be pH 6.0-11.0, with a preference for alkaline conditions. At 30 degrees C and pH 7.0, the strain removed 50 mg/L atrazine in 66 h with 1% inoculum. These results demonstrate that Citricoccus sp. TT3 has great potential for bioremediation of atrazine-contaminated sites, particularly in alkaline environments. To the best of our knowledge, there are no previous reports of Citricoccus strains that degrade atrazine, and therefore this work provides a novel candidate for atrazine bioremediation.

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