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Effect of Glyphosate on Protein and Nucleic Acid Synthesis and ATP Levels in Common Cocklebur (Xanthium pensylvanicum) Root Tissue

Published online by Cambridge University Press:  12 June 2017

Mike E. Foley ,
Emerson D. Nafziger ,
Fred W. Slife  and
Loyd M. Wax
Mike E. Foley
Affiliation:
Dep. Agron., Univ. of Illinois, Urbana, IL 61801
Emerson D. Nafziger
Affiliation:
Dep. Agron., Univ. of Illinois, Urbana, IL 61801
Fred W. Slife
Affiliation:
Dep. Agron., Univ. of Illinois, Urbana, IL 61801
Loyd M. Wax
Affiliation:
Dep. Agron., Univ. of Illinois, Urbana, IL 61801
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Abstract

Common cocklebur (Xanthium pensylvanicum Wallr.) root tissue was used to investigate the mechanism of action of glyphosate [N - (phosphonomethyl)glycine]. Arrival of glyphosate in the root-tip was followed closely by a rise in ATP levels to 136% of control levels by 2 h after treatment. Incorporation, but not uptake, of 14C-leucine was significantly decreased within 2 h after treatment. Incorporation declined steadily over a 32 -h time course. Uptake of 33P by the roots was temporarily stimulated by glyphosate, and as a percent of the total 33P taken up, there was decreased incorporation into RNA and DNA fractions by 8 h. Our results indicate that glyphosate may cause the rapid rise in ATP level primarily by inhibiting protein synthesis.

Keywords

Mechanism of action
Type
Research Article
Information
Weed Science , Volume 31 , Issue 1 , January 1983 , pp. 76 - 80
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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