Stereospecific responses to (R)-(+)- and (S)-(-)-quizalofop-ethyl in tissues of several plants
To get some information on the primary site of action of quizalofop-ethyl (ethyl 2-[4-(6-chloro-2-quinoxalinyloxy) phenoxy]propionate), effects on the growth of several intact plants and callus tissues and on the disruption of cellular membranes of stembase segments excised from untreated and herbic...
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Published in | Journal of Pesticide Science Vol. 11; no. 3; pp. 459 - 467 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Tokyo
Pesticide Science Society of Japan
01.08.1986
Japan Science and Technology Agency |
Subjects | |
Online Access | Get full text |
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Summary: | To get some information on the primary site of action of quizalofop-ethyl (ethyl 2-[4-(6-chloro-2-quinoxalinyloxy) phenoxy]propionate), effects on the growth of several intact plants and callus tissues and on the disruption of cellular membranes of stembase segments excised from untreated and herbicide-treated corn seedlings were studied using both (R)-(+)- and (S)-(-)-enantiomers of the herbicide. The growth of susceptible plants such as rice, oat and corn, was drastically reduced by the foliar application of the (R)-enantiomer at a dose of 6.25μg/plant, while the (S)-enantiomers showed only a little effect at a dose of 100μg/plant. Both 14C-labeled enantiomers showed similar translocation behavior in corn and barnyardgrass seedlings. The results suggested that receptor chirality is the source of the differential activities between the enantiomers. |
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Bibliography: | H60 880158488 |
ISSN: | 0385-1559 1348-589X 1349-0923 |
DOI: | 10.1584/jpestics.11.459 |