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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Herbicide resistance-endowing ACCase gene mutations in hexaploid wild oat (Avena fatua): insights into resistance evolution in a hexaploid species
|
|---|---|
| Published in |
Heredity, October 2012
|
| DOI | 10.1038/hdy.2012.69 |
| Pubmed ID | |
| Authors |
Q Yu, M S Ahmad-Hamdani, H Han, M J Christoffers, S B Powles |
| Abstract |
Many herbicide-resistant weed species are polyploids, but far too little about the evolution of resistance mutations in polyploids is understood. Hexaploid wild oat (Avena fatua) is a global crop weed and many populations have evolved herbicide resistance. We studied plastidic acetyl-coenzyme A carboxylase (ACCase)-inhibiting herbicide resistance in hexaploid wild oat and revealed that resistant individuals can express one, two or three different plastidic ACCase gene resistance mutations (Ile-1781-Leu, Asp-2078-Gly and Cys-2088-Arg). Using ACCase resistance mutations as molecular markers, combined with genetic, molecular and biochemical approaches, we found in individual resistant wild-oat plants that (1) up to three unlinked ACCase gene loci assort independently following Mendelian laws for disomic inheritance, (2) all three of these homoeologous ACCase genes were transcribed, with each able to carry its own mutation and (3) in a hexaploid background, each individual ACCase resistance mutation confers relatively low-level herbicide resistance, in contrast to high-level resistance conferred by the same mutations in unrelated diploid weed species of the Poaceae (grass) family. Low resistance conferred by individual ACCase resistance mutations is likely due to a dilution effect by susceptible ACCase expressed by homoeologs in hexaploid wild oat and/or differential expression of homoeologous ACCase gene copies. Thus, polyploidy in hexaploid wild oat may slow resistance evolution. Evidence of coexisting non-target-site resistance mechanisms among wild-oat populations was also revealed. In all, these results demonstrate that herbicide resistance and its evolution can be more complex in hexaploid wild oat than in unrelated diploid grass weeds. Our data provide a starting point for the daunting task of understanding resistance evolution in polyploids. |
X Demographics
The data shown below were collected from the profile of 1 X user who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 1 | 100% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 1 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 91 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Netherlands | 1 | 1% |
| Sweden | 1 | 1% |
| India | 1 | 1% |
| Czechia | 1 | 1% |
| Argentina | 1 | 1% |
| Unknown | 86 | 95% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 21 | 23% |
| Student > Ph. D. Student | 15 | 16% |
| Student > Bachelor | 9 | 10% |
| Student > Master | 8 | 9% |
| Professor | 5 | 5% |
| Other | 13 | 14% |
| Unknown | 20 | 22% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 57 | 63% |
| Biochemistry, Genetics and Molecular Biology | 4 | 4% |
| Environmental Science | 2 | 2% |
| Earth and Planetary Sciences | 2 | 2% |
| Immunology and Microbiology | 1 | 1% |
| Other | 3 | 3% |
| Unknown | 22 | 24% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 10 October 2012.
All research outputs
#18,317,537
of 22,681,577 outputs
Outputs from Heredity
#1,962
of 2,152 outputs
Outputs of similar age
#130,765
of 172,656 outputs
Outputs of similar age from Heredity
#15
of 20 outputs
Altmetric has tracked 22,681,577 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,152 research outputs from this source. They typically receive more attention than average, with a mean Attention Score of 9.0. This one is in the 3rd percentile – i.e., 3% of its peers scored the same or lower than it.
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