Comparative biodegradation of alkyl halide insecticides by the white rot fungus, Phanerochaete chrysosporium (BKM-F-1767).
The ability of Phanerochaete chrysosporium to degrade six alkyl halide insecticides (aldrin, dieldrin, heptachlor, chlordane, lindane, and mirex) in liquid and soil-corncob matrices was compared by using 14C-labeled compounds. Of these, only [14C]lindane and [14C]chlordane underwent extensive biodegradation, as evidenced by the fact that 9.4 to 23.4% of these compounds were degraded to 14CO2 in 30 days in liquid cultures and 60 days in soil-corncob cultures inoculated with P. chrysosporium. Although [14C]aldrin, [14C]dieldrin, [14C]heptachlor, and [14D]mirex were poorly mineralized, substantial bioconversion occurred, as determined by substrate disappearance and metabolite formation. Nonbiological disappearance was observed only with chlordane and heptachlor.
Kennedy
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DW
Biotechnology Center, Utah State University, Logan 84322-4430.
Aust
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SD
Bumpus
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JA
D000452:Aldrin / Q000378:metabolism; D001487:Basidiomycota / Q000378:metabolism*; D001673:Biodegradation, Environmental; D002706:Chlordan / Q000378:metabolism; D004026:Dieldrin / Q000378:metabolism; D006533:Heptachlor / Q000378:metabolism; D001556:Hexachlorocyclohexane / Q000378:metabolism; D007306:Insecticides / Q000378:metabolism*; D008917:Mirex / Q000378:metabolism; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical
D007306:Insecticides; D012989:Soil Pollutants; D014874:Water Pollutants, Chemical; D002706:Chlordan; D001556:Hexachlorocyclohexane; D006533:Heptachlor; D004026:Dieldrin; D000452:Aldrin; D008917:Mirex