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| Content Provider | Springer Nature Link |
|---|---|
| Author | RojaDelgado, Antonia María Priego Capote, Feliciano Luque de Castro, María Dolores Prado, Rafael |
| Copyright Year | 2014 |
| Abstract | Wheat is a major world crop. Wheat production is actually decreased by the emergence of herbicide-resistant weeds commonly found in wheat fields. The need to control these weeds has led to the use of herbicides, such as imidazolinones, that are not typically used in wheat fields. As a consequence, a new wheat cultivar, the Clearfield® wheat Pandora variety, has been developed to be resistant to imidazolinones. Actually, only few mechanisms of resistance are known. Here, we studied non-target mechanisms and the resistance to imazamox for susceptible and resistant cultivars, under greenhouse and laboratory conditions. Our results show a resistance factor of 14.3. We observed that the acetolactate synthase enzyme in the resistant cultivar showed resistance to imazamox. We found also variable cross-resistance to all tested imidazolinone herbicides. Metabolism studies showed a high conversion of imazamox to two metabolites in the resistant cultivar. We also observed a similar penetration of imazamox in both cultivars and a high translocation of imazamox to the root in the susceptible cultivar. Results on cytochrome P450 suggest that the principal resistance mechanism is not in its metabolism. This is the first study on the metabolism of imazamox in Clearfield® wheat cultivars. |
| Starting Page | 639 |
| Ending Page | 648 |
| Page Count | 10 |
| File Format | |
| ISSN | 17740746 |
| Journal | Agronomy for Sustainable Development |
| Volume Number | 35 |
| Issue Number | 2 |
| e-ISSN | 17730155 |
| Language | English |
| Publisher | Springer Paris |
| Publisher Date | 2014-10-09 |
| Publisher Institution | Institut National de la Recherche Agronomique (INRA) |
| Publisher Place | Paris |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Triticum aestivum Clearfield® crops Imazamox Resistance Susceptibility Metabolism Cytochrome P450 Agriculture Soil Science & Conservation Sustainable Development |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Engineering Agronomy and Crop Science |
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