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.
Biotechnology Center, Utah State University, Logan 84322-4430.
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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