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Perspectives on Glyphosate Resistance

Published online by Cambridge University Press:  12 June 2017

Laura D. Bradshaw ,
Stephen R. Padgette ,
Steven L. Kimball  and
Barbara H. Wells
Laura D. Bradshaw
Affiliation:
Monsanto Company, 800 N. Lindbergh Blvd. St. Louis, MO 63167
Stephen R. Padgette
Affiliation:
Monsanto Company, 800 N. Lindbergh Blvd. St. Louis, MO 63167
Steven L. Kimball
Affiliation:
Monsanto Company, 800 N. Lindbergh Blvd. St. Louis, MO 63167
Barbara H. Wells
Affiliation:
Monsanto Company, 800 N. Lindbergh Blvd. St. Louis, MO 63167
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Abstract

The lack of evolution of weed resistance to the herbicide glyphosate has been considered from several perspectives. Few plant species are inherently resistant to glyphosate. Furthermore, the long history of extensive use of the herbicide has resulted in no verified instances of weeds evolving resistance under field situations. Unique properties of glyphosate such as its mode of action, metabolism, chemical structure and lack of residual activity in soil may explain this observation. Selection for glyphosate resistance of crops using intense whole plant and cell/tissue culture techniques, including mutagenesis, has had only limited success and is unlikely to be duplicated under normal field conditions. Information obtained in the development of glyphosate-resistant crops suggests that target-site alterations that decrease the herbicidal activity of glyphosate also may lead to reduced survival of a weed. In addition, the complex manipulations that were required for the development of glyphosate-resistant crops are unlikely to be duplicated in nature to evolve glyphosate-resistant weeds.

Keywords

Glyphosate, N-(phosphonomethyl)glycineGlyphosate-resistant cropsherbicide resistanceweed resistance
Type
Mini-Review/Commentary
Information
Weed Technology , Volume 11 , Issue 1 , March 1997 , pp. 189 - 198
Copyright
Copyright © 1997 by the Weed Science Society of America 

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References

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