The consequences of synthetic auxin herbicide on plant-herbivore interactions

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: This is version 1 of this Preprint.


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Nia Johnson, Grace Zhang, Anah Soble, Stephen Johnson, Regina S Baucom


Although herbicide drift is a common side effect of herbicide application in agroecosystems, its effects on the ecology and evolution of natural communities are rarely studied. A recent shift to dicamba, a synthetic auxin herbicide known for ‘drifting’ to nontarget areas necessitates the examination of drift effects on the plant-insect interactions that drive eco-evo dynamics in weed communities. We review current knowledge of direct effects of synthetic auxin herbicides on plant-insect interactions, focusing on plant herbivory, and discuss potential indirect effects, which are cascading effects on organisms that interact with herbicide exposed plants. We end by developing a framework for the study of plant-insect interactions given drift, highlighting potential changes to plant developmental timing, resource quantity, quality, and cues.



Life Sciences


dicamba, herbicide drift, weed communities, plant herbivory


Published: 2022-11-03 10:24


CC-By Attribution-NonCommercial-NoDerivatives 4.0 International

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