Affiliation:
1. 1Institut de Biologie Moléculaire des Plantes, LECM CNRS-UPR 406, Institut de Botanique, 28 rue Goethe. 67083 Strasbourg Cedex. France
Abstract
Abstract S-Ethyl-N,N-dipropylthiocarbamate (EPTC) was oxidized into its corresponding sulfoxide by microsomal fractions from etiolated maize seedlings. This reaction is catalyzed by a hydroperoxide-dependent enzyme, identified as a peroxygenase. The hydroperoxides formed from fatty acids by a lipoxygenase are efficient co-substrates of the EPTC sulfoxidation. The effects of the safener dichlormid on the peroxygenase and lipoxygenase activities were studied in vitro and in vivo. In vitro, the safener is not an inhibitor of these enzymes. Dichlormid seems to act, in vivo, by modulating the amounts of peroxygenase and lipoxygenase in treated plants.
Subject
General Biochemistry, Genetics and Molecular Biology
Cited by
8 articles.
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