APPLICATION OF A THIAMETHOXAM-DEGRADING BACTERIUM, Bacillus ToyonensisSCQ-Z03 FOR BIOREMEDIATION OF THIAMETHOXAM POLLUTION.

A bacterium named SCQ-Z03 was isolated from soil and identified as Bacillus toyonensis, which could efficiently degrade thiamethoxam. The strain SCQ-Z03 was highly resistant to thiamethoxam and could tolerate thiamethoxam at a level of not less than 4000 mg/L. The degradation rate of thiamethoxam (the initial concentration was 500 mg/L) by SCQ-Z03 in inorganic salt medium could reach80.4% in 3 days. It had been found that biochar or fresh soil could promote the degradation of thiamethoxam by SCQ-Z03. In addition, SCQ-Z03 could also effectively degrade some other neonicotinoids. Therefore, it was considered that SCQ-Z03 could be used for bioremediation of thiamethoxam pollution or other neonicotinoids pollution. [ABSTRACT FROM AUTHOR]