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http://hdl.handle.net/20.500.12207/5974
Title: | Multiple herbicide resistance evolution: The case of eleusine indica in Brazil |
Authors: | Vázquez-García, José |
Orientador: | Alcántara-de la Cruz, Ricardo Rojano-Delgado, Antonia Palma-Bautista, Candelario Portugal Vasconcelos, João De Prado, Rafael |
Keywords: | Cytochrome P450 Goosegrass 14C-Herbicide Nontarget-site Target-site |
Issue Date: | 20-Jan-2021 |
Publisher: | ACS |
Citation: | Vázquez-García, J.G., Alcántara-de la Cruz, R., Rojano-Delgado, A.M., Palma-Bautista, C., Portugal Vasconcelos, J., & Rafael De Prado, R. (2021). Journal of Agricultural and Food Chemistry, 69 (4), 1197-1205. https://doi.org/10.1021/acs.jafc.0c03999 |
Abstract: | The occurrence of multiple herbicide resistant weeds has increased considerably in glyphosate-resistant soybean fields in Brazil; however, the mechanisms governing this resistance have not been studied. In its study, the target-site and nontarget-site mechanisms were characterized in an Eleusine indica population (R-15) with multiple resistance to the acetyl-CoA carboxylase (ACCase) inhibitors, glyphosate, imazamox, and paraquat. Absorption and translocation rates of 14C-diclofop-methyl14C-imazamox and 14C-glyphosate of the R-15 population were similar to those of a susceptible (S-15) population; however, the R-15 population translocated ∼38% less 14C-paraquat to the rest of plant and roots than the S-15 population. Furthermore, the R-15 plants metabolized (by P450 cytochrome) 55% and 88% more diclofop-methyl (conjugate) and imazamox (imazamox−OH and conjugate), respectively, than the S-15 plants. In addition, the Pro-106-Ser mutation was found in the EPSPS gene of this population. This report describes the first characterization of the resistance mechanisms in a multiple herbicide resistant weed from Brazil. |
Peer reviewed: | yes |
URI: | https://hdl.handle.net/20.500.12207/5974 |
metadata.dc.identifier.doi: | https://doi.org/10.1021/acs.jafc.0c03999 |
ISSN: | 1520-5118 |
Publisher version: | https://pubs.acs.org/doi/10.1021/acs.jafc.0c03999?ref=pdf |
Appears in Collections: | D-BIO - Artigos em revistas indexadas à WoS/Scopus |
Files in This Item:
File | Description | Size | Format | |
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Multiple herbicide resistance evolution.pdf | 1.95 MB | Adobe PDF | View/Open |
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