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Appl. Environ. Microbiol., 02 1995, 677-680, Vol 61, No. 2
Copyright © 1995, American Society for Microbiology

Mineralization of mono- and dichlorobenzenes and simultaneous degradation of chloro- and methyl-substituted benzenes by the white rot fungus Phanerochaete chrysosporium

JS Yadav, RE Wallace and CA Reddy
Department of Microbiology, Michigan State University, East Lansing 48824, USA.

Phanerochaete chrysosporium extensively degraded and mineralized chlorobenzene and o-, m-, and p-dichlorobenzenes. The rate of degradation was in the following order: monochlorobenzene > m- dichlorobenzene > o-dichlorobenzene > p-dichlorobenzene. Net level of degradation was generally higher than mineralization. Maximal degradation and mineralization of chlorobenzenes were observed in malt extract cultures in which the lignin peroxidases and manganese peroxidases are not known to be produced. The fungus degraded both chlorobenzene and toluene when presented as a mixture, indicating its ability to simultaneously degrade chloro-substituted and methyl- substituted benzenes.