ArticleJournal of experimental botany2020
Unravelling the effect of two herbicide resistance mutations on acetolactate synthase kinetics and growth traits.
Article in Journal of experimental botany, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
What it found
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Who cites it
9 citing papers in PubMed, 28 citations in OpenAlex.
- AHAS structural changes caused by mutations result in differences in binding affinity and resistance to two herbicides inFrontiers in plant science · 2026Article
- Stacked mutations in multi-copy AHAS genes enhance sulfonylurea herbicide resistance in soybean.The Plant journal : for cell and molecular biology · 2025Article
- Resistance to Amino Acid Biosynthesis Inhibiting-Herbicides inPlants (Basel, Switzerland) · 2025Article
- Article
- A Double Mutation in thePlants (Basel, Switzerland) · 2023Article
- Article
- Development and validation of functional kompetitive allele-specific PCR markers for herbicide resistance inFrontiers in plant science · 2023Article
- Cytochrome P450 CYP709C56 metabolizing mesosulfuron-methyl confers herbicide resistance in Alopecurus aequalis.Cellular and molecular life sciences : CMLS · 2022Article
- Trp-574-Leu mutation in wild mustard (PeerJ · 2021Article
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Gene mutations conferring herbicide resistance are hypothesized to have negative pleiotropic effects on plant growth and fitness, which may in turn determine the evolutionary dynamics of herbicide resistance alleles. We used the widespread, annual, diploid grass weed Alopecurus aequalis as a model species to investigate the effect of two resistance mutations-the rare Pro-197-Tyr mutation and the most common mutation, Trp-574-Leu-on acetolactate synthase (ALS) functionality and plant growth. We characterized the enzyme kinetics of ALS from two purified A. aequalis populations, each homozygous for the resistance mutation 197-Tyr or 574-Leu, and assessed the pleiotropic effects of these mutations on plant growth. Both mutations reduced sensitivity of ALS to ALS-inhibiting herbicides without significant changes in extractable ALS activity. The 197-Tyr mutation slightly decreased the substrate affinity (corresponding to an increased Km for pyruvate) and maximum reaction velocity (Vmax) of ALS, whereas the 574-Leu mutation significantly increased these kinetics. Significant decrease or increase in plant growth associated, respectively, with the 197-Tyr and 574-Leu resistance mutations was highly correlated with their impact on ALS kinetics, suggesting more likely persistence of the 574-Leu mutation than the 197-Tyr mutation if herbicide application is discontinued.
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