title: Degradation and mineralization of DDT by the ectomycorrhizal fungi, Xerocomus chrysenteron.
abstract: One strain of ectomycorrhizal fungi, Xerocomus chrysenteron, had been investigated for its ability to degrade 1,1,1-trichloro-2,2-bis(4-chlorophe-nyl) ethane (DDT) by measuring unlabeled DDT and identifying its metabolites, and determining the mineralization of [(13)C]DDT in pure cultures. After 45d incubation, about 55% of the added DDT disappeared from the culture system, less than 5% remained in the nutrient solution, and about 44% was retained in the mycelium. Inoculation with mycelium enhanced the degradation of DDT in soil, and alleviated enrichment of DDT in plants. The metabolites identified by gas chromatography-mass spectrometry were 1,1-dichloro-2,2-bis(4-chlorophenyl) ethane (DDD), 1,1-dichloro-2,2-bis(4-chlorophenyl)ethylene (DDE), and 4,4'-dichlorobenzophenone (DBP). There were significant differences in the δ(13)C of released CO2 between [(13)C]DDT and DDT cultures, which indicated X. chrysenteron was able to mineralize DDT to CO2.
authors: College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
authors: Yi
authors: Y
authors: Huang
authors: Jie
authors: J
authors: Wang
mesh_terms: D001487:Basidiomycota / Q000378:metabolism*; D001673:Biodegradation, Environmental; D003634:DDT / Q000378:metabolism*; D003633:Dichlorodiphenyl Dichloroethylene / Q000378:metabolism; D003632:Dichlorodiphenyldichloroethane / Q000378:metabolism; D008401:Gas Chromatography-Mass Spectrometry; D038821:Mycorrhizae / Q000378:metabolism*; D012989:Soil Pollutants / Q000378:metabolism*
chemical_list: D012989:Soil Pollutants; D003633:Dichlorodiphenyl Dichloroethylene; D003634:DDT; D003632:Dichlorodiphenyldichloroethane