Abstract Title:

How glyphosate affects plant disease development: it is more than enhanced susceptibility.

Abstract Source:

Pest Manag Sci. 2018 May ;74(5):1054-1063. Epub 2017 Jan 30. PMID: 28067016

Abstract Author(s):

Ray Hammerschmidt

Article Affiliation:

Ray Hammerschmidt


Glyphosate has been shown to affect the development of plant disease in several ways. Plants utilize phenolic and other shikimic acid pathway-derived compounds as part of their defense against pathogens, and glyphosate inhibits the biosynthesis of these compounds via its mode of action. Several studies have shown a correlation between enhanced disease and suppression of phenolic compound production after glyphosate. Glyphosate-resistant crop plants have also been studied for changes in resistance as a result of carrying the glyphosate resistance trait. The evidence indicates that neither the resistance trait nor application of glyphosate to glyphosate-resistant plants increases susceptibility to disease. The only exceptions to this are cases where glyphosate has been shown to reduce rust diseases on glyphosate-resistant crops, supporting a fungicidal role for this chemical. Finally, glyphosate treatment of weeds or volunteer crops can cause a temporary increase in soil-borne pathogens that may result in disease development if crops are planted too soon after glyphosate application.© 2017 Society of Chemical Industry.

Study Type : Environmental
Additional Links
Problem Substances : Glyphosate : CK(895) : AC(304)

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