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Interaction of Chemical Pesticides and Their Formulation Ingredients with Microbes Associated with Plants and Plant Pests.

Authors
  • Duke, Stephen O1
  • 1 USDA-ARS , Natural Products Utilization Research Unit , P.O. Box 1848, University , Mississippi 38677 , United States of America. , (United States)
Type
Published Article
Journal
Journal of Agricultural and Food Chemistry
Publisher
American Chemical Society
Publication Date
Jul 25, 2018
Volume
66
Issue
29
Pages
7553–7561
Identifiers
DOI: 10.1021/acs.jafc.8b02316
PMID: 29975525
Source
Medline
Keywords
Language
English
License
Unknown

Abstract

Chemical pesticides and their formulation ingredients can have unintended effects on microbes associated with plants and plant pests. These effects can be due to direct effects on the microbes or to effects on crops or weeds that subsequently affect the microbes. In addition to fungicides, some insecticides, herbicides, and formulation compounds are toxic to plant pathogenic microbes, as well as to potentially beneficial microbes, such as those that infect insect pests. These chemicals, especially herbicides, can also indirectly affect microbes through their effects on crops and weeds. For example, glyphosate strongly impairs shikimic acid pathway-based plant defenses to microbial diseases in glyphosate-susceptible plants, significantly increasing its efficacy as an herbicide. Some herbicides induce plant defenses against plant pathogens. For a complete understanding of integrated pest management and overall cost/benefit of pesticide use, much more information is needed on microbial/pesticide interactions.

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