JOURNAL
OF PESTICIDE SCIENCE; 22 (2). 1997.
156-164.
STUDIES
ON THE SYNTHESIS AND BIOLOGICAL ACTIVITY OF IMIDAZOLE COMPOUNDS
KUWANO E
BIOSIS
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IMIDAZOLES PESTICIDES BIOLOGICAL ACTIVITY SYNTHESIS
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71101-05-8
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Pesticide
Biochemistry and Physiology; Volume 33, Issue 1 , January
1989, Pages 57-68
The absorption, translocation, and metabolism of difenopenten-ethyl
in soybean and wheat
Richard
H. Shimabukuro, Wendy C. Walsh and Barry L. Hoffer
United
States Department of Agriculture, Agricultural Research
Service, Biosciences Research Laboratory, Fargo, North Dakota
58105, USA
The postemergence graminicide,
difenopenten-ethyl [ethyl 4-(4-(4?-trifluoromethylphenoxy)-phenoxy)-2-pentenoate],
was rapidly hydrolyzed to its acid, difenopenten, in both
susceptible wheat and resistant soybean followed by hydroxylation
of the pentenoic acid side chain to a 3-hydroxy metabolite
and subsequent conjugation to water-soluble polar metabolite(s).
Metabolism of the herbicide did not differ greatly between
the two species. A minor decarboxylation product of the
3-hydroxy metabolite, isolated from soybean cell suspension
culture, was identified as a substituted 2-butanone metabolite.
Difenopenten-ethyl is rapidly absorbed
by both species through the roots and leaf surfaces
but apoplastic and symplastic translocation is very limited.
Differential absorption, translocation, and metabolism may
not be major factors in the selective action of difenopenten-ethyl.
Pest.
Biochem. and Physiol. 27:106-113. 1987.
Effect
of difenopenten-ethyl on isolated corn (Zea mays L.) and
soybean (Glycine max L.) mitochondrial membrane integrity
and physiological activities.
Gealy,
D. R., R. A. Boydston, R. R. Klein, and D. E. Koeppe.
