Uptake and biodegradation of DDT by 4 ectomycorrhizal fungi
- 作者：Yi Huang ; Xi Zhao ; Shengji Luan
- 关键词：Biodegradation ; Ectomycorrhizal fungi ; DDT
- 刊名：Science of the Total Environment
- 出版年：2007
- 期刊代码：63_00489697
- 类别：env
- 出版时间：15 October 2007
- 卷：385
- 期：1-3
- 页码：235-241
- 文件大小：355 K
摘要
This research deals with biodegradation of 1,1,1-trichloro-2,2-bis (4-chlorophenyl) ethane (DDT) by 4 selected ectomycorrhizal fungi (ECMF) species, Boletus edulis, Gomphidius viscidus, Laccaria bicolor, and Leccinum scabrum. The pure culture of the four ECMF species in a DDT environment (5 mg/l) showed that DDT almost completely disappeared from the media after 15 days, but only 40–50%was found being accumulated in mycelia. Further gas chromatography mass spectrometry (GC–MS) test of the hexane extractable metabolites identified that the remaining DDT degraded to 1,1-dichloro-2,2-bis (4-chlorophenyl) ethane (DDD) (retention time 17.39 min) and 4,4′-dihlorobenzophenone (DBP) (retention time 14.89 min). Therefore, these results, for the first time, demonstrated that ECMF can degrade DDT through a similar pathway found in white rot fungi.