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《Environmental Science》 2007-01
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Synergistic Degradation of Metsulfuron-Methyl in Penicillium sp.Inoculated Wheat Rhizosphere Soil

HU Li-fang,SHEN Dong-sheng,HE Yong-hua (Department of Environmental Engineering,Zhejiang University,Hangzhou 310029,China)  
Research on the synergistic biodegradation of metsulfuron-methyl in Penicillium sp.inoculated wheat rhizosphere soil was discussed in this paper.Penicillium sp.,a high-effective degrading fungi,was inoculated in the soils and root exudates were irrigated during the trial.The degradative characteristics of metsulfuron-methyl and microbial population dynamics of cultivable microorganisms capable of metsulfuron-methyl were investigated in the samples.A larger microbial population is measured in the inoculated rhizosphere soil,which enhances biodegradation of metsulfuron-methyl.The half-life of degradation metsulfuron-methyl in the inoculated wheat-rhizosphere soil is 8.6d,the degradative rate of which is 1.8 times of that in inoculated non-rhizosphere sample,and 2.7 times of that in non-inoculated rhizosphere sample.Add metsulfuron-methyl to the samples again,the soil microorganisms can degrade metsulfuron-methyl sustainably.
【Fund】: 国家自然科学基金项目(20077024)
【CateGory Index】: X592
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