I. Lee et Js. Fletcher, INVOLVEMENT OF MIXED-FUNCTION OXIDASE SYSTEMS IN POLYCHLORINATED BIPHENYL METABOLISM BY PLANT-CELLS, Plant cell reports, 11(2), 1992, pp. 97-100
Nineteen different polychlorinated biphenyl (PCB) congeners ranging in
chlorine content from 2 to 6 chlorine atoms were provided to nonphoto
synthetic suspension cultures of rose (Rosa sp. cv. Paul's Scarlet). A
fter a 96 h incubation period, 11 individual congeners had been metabo
lized by > 10%. Provision of mixed function oxidase inhibitors (10 mM
metyrapone or 0.5 mM 7,8-benzoflavone) either stopped or severely redu
ced the metabolism of individual congeners; whereas (inhibitors of per
oxidase) (1 mM benzoate or 1 mM n-propylgallate) had minimal influence
on PCB metabolism. The metabolism of PCBs by rose cultures appears to
be catalyzed by a cytochrome P-450-and/or P-448-dependent enzyme syst
em.