Molecular characteristics of the first case of haloxyfop-resistant Poa annua
| العنوان: | Molecular characteristics of the first case of haloxyfop-resistant Poa annua |
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| المؤلفون: | Carl H. Mesarich, Kerry C. Harrington, Hossein Ghanizadeh |
| المصدر: | Scientific Reports, Vol 10, Iss 1, Pp 1-10 (2020) Scientific Reports |
| بيانات النشر: | Nature Publishing Group, 2020. |
| سنة النشر: | 2020 |
| مصطلحات موضوعية: | 0106 biological sciences, Protein Conformation, Pyridines, Population, Drug Resistance, lcsh:Medicine, Drug resistance, medicine.disease_cause, 01 natural sciences, Article, Plant evolution, medicine, Poa annua, Enzyme Inhibitors, education, Plant ecology, lcsh:Science, Poa, Genetics, chemistry.chemical_classification, Mutation, education.field_of_study, Multidisciplinary, biology, lcsh:R, Cytochrome P450, 04 agricultural and veterinary sciences, biology.organism_classification, Enzyme, chemistry, Susceptible individual, Plant stress responses, 040103 agronomy & agriculture, biology.protein, 0401 agriculture, forestry, and fisheries, lcsh:Q, Isoleucine, Plant sciences, 010606 plant biology & botany, Acetyl-CoA Carboxylase |
| الوصف: | Haloxyfop is one of two acetyl-coenzyme A carboxylase (ACCase) inhibitors that is recommended for controlling Poa annua. We have characterised a population of P. annua that had developed resistance to haloxyfop. This resistant population was found to be almost 20 times less sensitive to haloxyfop than a susceptible population based on percentage survival of individuals in two dose-response experiments. However, the haloxyfop-resistant population was still susceptible to clethodim. Pre-treatment of resistant individuals with a cytochrome P450 inhibitor, malathion, did not change the sensitivity level of the resistant plants to haloxyfop, suggesting that a non-target site mechanism of resistance involving enhanced metabolism, was not responsible for this resistance in P. annua. Gene sequencing showed that a target site mutation at position 2041, which replaced isoleucine with threonine in the carboxyltransferase (CT) domain of the ACCase enzyme, was associated with resistance to haloxyfop in the resistant population. An evaluation of the 3-D structure of the CT domain suggested that, unlike Asn-2041, which is the most common mutation at this position reported to date, Thr-2041 does not change the conformational structure of the CT domain. This is the first study investigating the molecular mechanism involved with haloxyfop resistance in P. annua. |
| اللغة: | English |
| تدمد: | 2045-2322 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::096aa079b8c247c69f3985d96a1b4198Test http://link.springer.com/article/10.1038/s41598-020-61104-0Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....096aa079b8c247c69f3985d96a1b4198 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20452322 |
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