title: Absorption and metabolism of the chiral isomers of fonofos in the corn and cotton plant.
abstract: Root absorption of chiral phenyl-35S-fonofos in cotton and corn plants revealed stereoselective differences between the two enantiomers. (S)p-Fonofos was absorbed at a faster initial rate and to a greater extent than the (R)p enantiomer in both plant species. Approximately 40% and 62% of the applied radioactivity was absorbed into the cotton plant 12 hr after application of (R)p- and (S)p-fonofos, respectively. In the corn plant, approximately 25% and 63% of the applied (R)p- and (S)p-fonofos was absorbed in the first 12 hrs. Little qualitative or quantitative difference in plant translocation between fonofos enantiomers was observed. (R)p-fonofos was found to be metabolized to a greater extent than the (S)p enantiomer in both cotton and corn plants.
mesh_terms: D000042:Absorption; D001345:Autoradiography; D004397:Fonofos / Q000378:metabolism*; D003368:Gossypium / Q000378:metabolism*; D007306:Insecticides / Q000378:metabolism*; D013237:Stereoisomerism; D003313:Zea mays / Q000378:metabolism*
chemical_list: D007306:Insecticides; D004397:Fonofos