L. C. Blair, F. Slife, A. Felsot
Jun 1, 1984
Citations
0
Influential Citations
5
Citations
Quality indicators
Journal
Pesticide Biochemistry and Physiology
Abstract
Abstract p -Chlorophenylmethylsulfide (PCPMS) was enzymatically sulfoxidized to p -chlorophenylmethylsulfoxide (PCPMSO) in aerobic cotton, carrot, and tobacco cell suspension cultures. Neither boiled nor freeze-killed cell cultures were competent to sulfoxidize PCPMS to PCPMSO. The sulfone, p -chlorophenylmethylsulfone (PCPMSO 2 ), was not produced in any of the three species. The rates of PCPMS sulfoxidation, were cotton > carrot > tobacco. The apparent K m for carrot cells was 88 μ M PCPMS (14 μg/ml), while the apparent V max was 7 nmol PCPMSO/mg whole cell protein/hr. These rates of sulfide oxidation are higher than previously reported in intact plants.