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An Investigation on the Mechanism of Action of Propachlor

Published online by Cambridge University Press:  12 June 2017

W. B. Duke ,
F. W. Slife ,
J. B. Hanson  and
H. S. Butler
W. B. Duke
Affiliation:
Univ. of Illinois, Urbana, IL 61801 Cornell Univ., Ithaca, NY
F. W. Slife
Affiliation:
Univ. of Illinois, Urbana, IL 61801
J. B. Hanson
Affiliation:
Univ. of Illinois, Urbana, IL 61801
H. S. Butler
Affiliation:
Univ. of Illinois, Urbana, IL 61801
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Abstract

Studies were conducted to examine over time the effects of propachlor (2-chloro-N-isopropylacetanilide) on the growth of cucumber (Cucumus sativus L. ‘Straight Eight’) roots and associated biosynthetic reactions. Complete inhibition of root elongation occurred within 16 hr after exposure to propachlor. Inhibition of growth was not found to be a result of an effect on ATP formation or respiration. Protein biosynthesis was reduced several hours before the observed inhibition of growth therefore implicating it as the causal factor. Inhibition of protein synthesis occurred prior to an observed reduction in RNA synthesis suggesting that the primary effect of propachlor is on protein biosynthesis and that its effect on nucleic acid synthesis is secondary. It is concluded that the primary mechanism of action of propachlor is its effect on nascent protein biosynthesis.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 2 , March 1975 , pp. 142 - 147
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

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