Research on the Degradation of Herbicide-Quinclorac by Microorganism

Abstract:

In order to study the degradation of herbicide----Quinclorac using microorganism, separate and screen the degrading bacteria CSUFTM62 from soil, this paper researched the degradation effect of bacterial strain on the Quinclorac under different situations, including different increments, different temperatures, different concentrations of pesticide, different pH, and different additive amount of nutrients. The results show that the optimal degradation temperature is 30 ° C; the optimum pH is 7; the degradation rate of Quinclorac reaches its maximum when the concentration is 50mg / L. Adding yeast extract could increase the amount of strain growth but never affect its degradation effects on Quinclorac; combined with the morphological characteristics, the strains CSUFTM62 is identified as the Stenotrophomonas maltophilia by measuring the 16S sequence.

• Periodical: Advanced Materials Research (Volume 739)
• Pages: 349-354
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.739.349
• Online since: August 2013
• Authors: Xiong Zhi Zheng, Wei Ai Zeng, Song Yi Zhao, Yan Ning Huang, Qing Ming Zhou
• Keywords: Degradation, Microorganism, Quinclorac

References

[1] Huang Guanghuan. The reasons of Quinclorac damage and the preventive measures[J]. Fujian Agricultural Science, 2010, ( 05 ): 59-60.

[2] Wang Jing, Chen Zepeng, Wan Shuqing et al. The degradation dynamics of Quinclorac in tobacco hydroponic solution and its effect on the growth of tobacco seedling[J]. Guangdong Agricultural Science, 2007, ( 02 ): 59-61.

[3] Lv Zhenmei, Min Hang, Ye Yangfang. The influence of herbicides Quinclorac on the microbial populations in paddy soil[J]. Chinese Journal of Applied Ecology, 2004, ( 04 ): 605-609.

[4] Zuo Tao, Liu Huashan, Han Jinfeng et al. The influence of degradation bacteria on the active oxygen and protective enzymes in the flue-cured tobacco leaves stressed by Quinclorac[J]. Henan Agricultural Sciences, 2010, ( 12 ): 36-38.

[5] Yuan Xuexia, Guo Dongliang, Zhao Shancang et al. The degradation dynamics and residue of Quinclorac in rice, soil and water field[J]. Journal of ecology and environment, 2011 ( Z1 ): 1138-1142.

[6] Li Lichun, Chen Zepeng, Zhang Wanliang et al. A comparative study of Quinclorac residues in soil, tobacco and tobacco deformity[J]. Pesticides, 2012, ( 02 ): 127-129.

[7] Lv Zhenmei. The influence of herbicide Quinclorac on the soil microorganism and its degradation characteristics[D]. Zhejiang University, (2004).

[8] Xiang Wansheng, Wu Jinshui, Xiao Heai et al. The separation, extraction and purification of soil microorganism[J]. Chinese Journal of Applied Ecology, 2003, ( 03 ): 452-456.