Herbicide Metabolism: Crop Selectivity, Bioactivation, Weed Resistance, and Regulation

Several grass and broadleaf weed species around the world have evolved multiple-herbicide resistance at alarmingly increasing rates. Research on the biochemical and molecular resistance mechanisms of multiple-resistant weed populations indicate a prevalence of herbicide metabolism catalyzed by enzym...

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Bibliographic Details
Published in:Weed science 2019-03, Vol.67 (2), p.149-175
Main Authors: Nandula, Vijay K., Riechers, Dean E., Ferhatoglu, Yurdagul, Barrett, Michael, Duke, Stephen O., Dayan, Franck E., Goldberg-Cavalleri, Alina, Tétard-Jones, Catherine, Wortley, David J., Onkokesung, Nawaporn, Brazier-Hicks, Melissa, Edwards, Robert, Gaines, Todd, Iwakami, Satoshi, Jugulam, Mithila, Ma, Rong
Format: Article
Language:English
Subjects:
Acids
Biological activity
Biological evolution
Corn
Crop tolerance
Crops
Cytochrome P450
Cytochromes P450
Enzymes
Glutathione
glutathione S-transferase
Glyphosate
Grain
Herbicide resistance
herbicide safener
Herbicides
Metabolism
Metabolites
natural phytotoxin
oxylipin
Selectivity
Sorghum
SYMPOSIUM
Weeds
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Summary:Several grass and broadleaf weed species around the world have evolved multiple-herbicide resistance at alarmingly increasing rates. Research on the biochemical and molecular resistance mechanisms of multiple-resistant weed populations indicate a prevalence of herbicide metabolism catalyzed by enzyme systems such as cytochrome P450 monooxygenases and glutathione S-transferases and, to a lesser extent, by glucosyl transferases. A symposium was conducted to gain an understanding of the current state of research on metabolic resistance mechanisms in weed species that pose major management problems around the world. These topics, as well as future directions of investigations that were identified in the symposium, are summarized herein. In addition, the latest information on selected topics such as the role of safeners in inducing crop tolerance to herbicides, selectivity to clomazone, glyphosate metabolism in crops and weeds, and bioactivation of natural molecules is reviewed.
ISSN:0043-1745
1550-2759
1550-2759
DOI:10.1017/wsc.2018.88