Biodegradation of diuron by an endophytic fungus Neurospora intermedia DP8-1 isolated from sugarcane and its potential for remediating diuron-contaminated soils
文献类型： 外文期刊
作者： Wang, Yanhui 2 ; Li, Honghong 1 ; Feng, Guojun 1 ; Du, Liangwei 4 ; Zeng, Dongqiang 1 ;
作者机构： 1.Guangxi Univ, Inst Pesticide & Environm Toxicol, Nanning, Peoples R China
2.Guangxi Acad Agr Sci, Guangxi Key Lab Biol Crop Dis & Insect Pests, Plant Protect Res Inst, Nanning, Peoples R China
3.Guangxi Univ, Guangxi Key Lab Agr Environm & Agr Prod Safet, Nanning, Peoples R China
4.Guangxi Univ, Coll Chem & Chem Engn, Nanning, Peoples R China
期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）
ISSN： 1932-6203
年卷期： 2017 年 12 卷 8 期
页码：
收录情况： SCI
摘要： A diuron-degrading endophyte DP8-1 was isolated from sugarcane root grown in diurontreated soil in the present study. The endophyte was identified as Neurospora intermedia based on the morphological characteristics and sequence analysis. The fermentation parameters including temperature, pH, inoculation size, carbon source, and initial diuron concentration were also investigated for the optimization of degradation efficiency. The results indicated that strain DP8-1 was capable of degrading up to 99% diuron within 3 days under the optimal degrading condition. The study of degradation spectrum indicated that strain DP8-1 could also degrade and utilize fenuron, monuron, metobromuron, isoproturon, chlorbromuron, linuron, and chlortoluron as substrate for strain growth. On basis of liquid chromatography-mass spectrometry analysis for the products of the degradation of diuron, strain DP8-1 metabolized diuron to produce N-(3,4-dichlorophenyl)-urea and N-(3,4-dichlorophenyl)-N-methylurea through sequential N-dealkylations. In a soil bioaugmentation experiment, the inoculation of strain DP8-1 into diuron-treated soil effectively enhanced the disappearance rate of diuron.
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