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Updated: Jan 18, 2026
10:52
Protocols for Robust Herbicide Resistance Testing in Different Weed Species
Published on: July 2, 2015
15.1K
Target-Site Mutations Conferring Herbicide Resistance.
Brent P Murphy1, Patrick J Tranel2
1Department of Crop Sciences, University of Illinois, Urbana, IL 61801, USA. brentpm2@illinois.edu.
Plants (Basel, Switzerland)
|October 2, 2019
Summary
Herbicide resistance in weeds is increasing due to new mutations at nine target sites. This review highlights these mutations and suggests methods to study weed resistance evolution.
Area of Science:
- Agricultural Science
- Plant Biology
- Biochemistry
Background:
- Herbicide resistance in weeds poses a significant threat to global agriculture.
- Resistance has evolved at nine distinct herbicide target sites.
- Understanding the genetic basis of resistance is crucial for sustainable weed management.
Purpose of the Study:
- To review recently identified mutations conferring herbicide resistance.
- To highlight emerging trends in resistance mechanisms, such as multiple mutations.
- To propose standardized reference sequences and discuss methods for studying resistance.
Main Methods:
- Literature review of recently reported herbicide resistance-conferring mutations.
- Analysis of mutation patterns, including multiple amino acid changes and nucleotide alterations.
- Discussion of experimental approaches for assessing cross-resistance and fitness costs.
Main Results:
- Resistance mutations have been identified across nine herbicide target sites.
- An increasing number of weeds exhibit multiple resistance mutations.
- Specific examples include multiple amino acid changes at the glyphosate target site and dual nucleotide changes within a single codon.
Conclusions:
- The evolution of herbicide resistance in weeds is complex and multifaceted.
- Emerging trends necessitate standardized approaches for mutation identification and resistance analysis.
- Further research into cross-resistance and fitness costs is essential for effective weed control strategies.
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