ISSN:
1365-3180
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Growth responses of wheat plants to combined treatments of four mixed function oxidase (MFO) inhibitors and chlortoluron were determined. Analysis of interactions showed that piperonyl-butoxide and especially ABT (1-aminobenzotriazole) increased the toxicity of chlortoluron. Metyrapone and 2,4-dichlorophenoxypropyne were phytotoxic and did not exert any clear interaction. ABT also increased the toxicity of isoproturon to wheat.Our results suggest that ABT Strongly inhibits the breakdown of chlortoluron and isoproturon in wheat. Since ABT is known to act as a suicide substrate for plant cytochrome P-450, wheat enzymes involved in the metabolism of these two herbicides are likely to belong to this class. It thus appears that compounds designed to inhibit plant cytochrome P-450 enzymes may interact with herbicide metabolism and are potential synergists of herbicide activity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-3180.1985.tb00661.x
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