کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4409276 1307476 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Degradation and mineralization of DDT by the ectomycorrhizal fungi, Xerocomus chrysenteron
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Degradation and mineralization of DDT by the ectomycorrhizal fungi, Xerocomus chrysenteron
چکیده انگلیسی


• The mineralization ability of ECMF on DDT was investigated for the first time.
• We are the first to prove DDT could be mineralized by Xerocomus chrysenteron.
• X. chrysenteron showed much more powerful DDT tolerance than other fungi in similar studies.

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 [13C]DDT in pure cultures. After 45 d 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 δ13C of released CO2 between [13C]DDT and DDT cultures, which indicated X. chrysenteron was able to mineralize DDT to CO2.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemosphere - Volume 92, Issue 7, August 2013, Pages 760–764
نویسندگان
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