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Behavior of 14C-Haloxyfop-Methyl in Intact Plants and Cell Cultures

Published online by Cambridge University Press:  12 June 2017

Douglas D. Buhler ,
Beth A. Swisher  and
Orvin C. Burnside
Douglas D. Buhler
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
Beth A. Swisher
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
Orvin C. Burnside
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
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Abstract

Behavior of 14C-haloxyfop-methyl {methyl 2-[4-[(3-chloro-5-(trifluoromethyl)-2-pyridinyl] oxy] phenoxy] propanoate} was examined in intact plants of soybean [Glycine max (L.) Merr. ‘Mead’], shattercane [Sorghum bicolor (L.) Moench. ♯ SORVU], and yellow foxtail [Setaria glauca (L.) Beauv. ♯ SETLU] and in cell cultures of soybean and yellow foxtail. Foliar absorption of 14C-haloxyfo-methyl by intact plants was almost complete within 48 h. Significant translocation occurred within 48 h of treatment, with soybean and shattercane plants translocating more 14C than yellow foxtail. Metabolism of 14C-haloxyfop-methyl in intact plants was similar among species. Haloxyfop-methyl was rapidly hydrolyzed to haloxyfop in treated leaves and then translocated to metabolically active areas within the plants. Significant quantities of polar products were also isolated. Soybean cells in suspension culture contained higher levels of 14C than did yellow foxtail cells. Most of the 14C in soybean cells was haloxyfop-methyl, while yellow foxtail contained mostly haloxyfop.

Keywords

Herbicide metabolismmode of actiontissue cultureDowco 453 MEGlycine maxSetaria glaucaSorghum bicolorSETLUSORVU
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 33 , Issue 3 , May 1985 , pp. 291 - 299
Copyright
Copyright © 1985 by the Weed Science Society of America 

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