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Mechanistic basis for synergism of 2,4-D amine and metribuzin in Avena sterilis
The combination of herbicides with different modes of action has been adopted not only to improve weed control but also to increase the environmental sustainability of plant-protection products. In this study, we showed a synergistic effect of the auxin herbicide 2,4-D amine with the PSII-inhibiting...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Pesticide Science Society of Japan
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7691562/ https://www.ncbi.nlm.nih.gov/pubmed/33304190 http://dx.doi.org/10.1584/jpestics.D20-028 |
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author | Han, Heping Picoli Jr., Gilmar José Guo, Haibin Yu, Qin Powles, Stephen Bruce |
author_facet | Han, Heping Picoli Jr., Gilmar José Guo, Haibin Yu, Qin Powles, Stephen Bruce |
author_sort | Han, Heping |
collection | PubMed |
description | The combination of herbicides with different modes of action has been adopted not only to improve weed control but also to increase the environmental sustainability of plant-protection products. In this study, we showed a synergistic effect of the auxin herbicide 2,4-D amine with the PSII-inhibiting herbicide metribuzin to control the global grass weed wild oat (Avena sterilis) population and investigated the underlying mechanisms. Pretreatment with 2,4-D amine did not change the foliar absorption of metribuzin but did increase metribuzin translocation to the roots and new leaves, although enhancement of the metribuzin metabolism was also observed. Considering that the expression level of the target site psbA gene is significantly higher in leaves than in roots, increased metribuzin translocation to new leaves is likely the major cause of the observed synergism, even though enhanced metribuzin metabolism may offset the metribuzin efficacy. This is the first report on the synergistic mechanism between 2,4-D amine and metribuzin in weed control. |
format | Online Article Text |
id | pubmed-7691562 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Pesticide Science Society of Japan |
record_format | MEDLINE/PubMed |
spelling | pubmed-76915622020-12-09 Mechanistic basis for synergism of 2,4-D amine and metribuzin in Avena sterilis Han, Heping Picoli Jr., Gilmar José Guo, Haibin Yu, Qin Powles, Stephen Bruce J Pestic Sci Original Article The combination of herbicides with different modes of action has been adopted not only to improve weed control but also to increase the environmental sustainability of plant-protection products. In this study, we showed a synergistic effect of the auxin herbicide 2,4-D amine with the PSII-inhibiting herbicide metribuzin to control the global grass weed wild oat (Avena sterilis) population and investigated the underlying mechanisms. Pretreatment with 2,4-D amine did not change the foliar absorption of metribuzin but did increase metribuzin translocation to the roots and new leaves, although enhancement of the metribuzin metabolism was also observed. Considering that the expression level of the target site psbA gene is significantly higher in leaves than in roots, increased metribuzin translocation to new leaves is likely the major cause of the observed synergism, even though enhanced metribuzin metabolism may offset the metribuzin efficacy. This is the first report on the synergistic mechanism between 2,4-D amine and metribuzin in weed control. Pesticide Science Society of Japan 2020-11-20 /pmc/articles/PMC7691562/ /pubmed/33304190 http://dx.doi.org/10.1584/jpestics.D20-028 Text en © 2020 Pesticide Science Society of Japan https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article distributed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) License. |
spellingShingle | Original Article Han, Heping Picoli Jr., Gilmar José Guo, Haibin Yu, Qin Powles, Stephen Bruce Mechanistic basis for synergism of 2,4-D amine and metribuzin in Avena sterilis |
title | Mechanistic basis for synergism of 2,4-D amine and metribuzin in Avena sterilis |
title_full | Mechanistic basis for synergism of 2,4-D amine and metribuzin in Avena sterilis |
title_fullStr | Mechanistic basis for synergism of 2,4-D amine and metribuzin in Avena sterilis |
title_full_unstemmed | Mechanistic basis for synergism of 2,4-D amine and metribuzin in Avena sterilis |
title_short | Mechanistic basis for synergism of 2,4-D amine and metribuzin in Avena sterilis |
title_sort | mechanistic basis for synergism of 2,4-d amine and metribuzin in avena sterilis |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7691562/ https://www.ncbi.nlm.nih.gov/pubmed/33304190 http://dx.doi.org/10.1584/jpestics.D20-028 |
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