Isolation and identification of quizalofop-p-ethyl-degrading strain Bacillus subtilis H and its degradation characteristics
HOU Ying1,2, LI Jing-quan1, YOU Xiao-yan2, WANG Wei-yu2, PEI Tao2, SUN Jun-jie2
1. Inner Mongolia Key Laboratory of Environmental Pollution Control & Waste Resource, School of Ecology and Environment, Inner Mongolia University, Hohhot 010021, China;
2. College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
Strain H degrading quizalofop-p-ethyl (QE) was isolated by using QE as sole carbon source from the soil contaminated by QE for a long time. Strain H was identified as Bacillus subtilis based on morphological properties, physiological and biochemical characteristics and 16S rRNA gene analysis. The degradation rate of 100mg/L QE was over 95% within 72h when strain H was cultured at temperature of 30~42℃ and pH 7~9. The degradation product of QE was identified as quizalofop acid(QA) by UPLC-MS. This is the first report of quizalofop-p-ethyl degrading by Bacillus subtilis.
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HOU Ying, LI Jing-quan, YOU Xiao-yan, WANG Wei-yu, PEI Tao, SUN Jun-jie. Isolation and identification of quizalofop-p-ethyl-degrading strain Bacillus subtilis H and its degradation characteristics. CHINA ENVIRONMENTAL SCIENCECE, 2018, 38(4): 1466-1472.
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