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Campo DC | Valor | Idioma |
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dc.contributor.author | Bracamonte, Enzo | |
dc.contributor.author | Silveira, Hellen Martins da | |
dc.contributor.author | Cruz, Ricardo Alcántara‐de la | |
dc.contributor.author | Domínguez‐Valenzuela, José Alfredo | |
dc.contributor.author | Cruz‐Hipolito, Hugo Enrique | |
dc.contributor.author | Prado, Rafael De | |
dc.date.accessioned | 2018-06-06T14:29:52Z | |
dc.date.available | 2018-06-06T14:29:52Z | |
dc.date.issued | 2018-01-31 | |
dc.identifier.issn | 15264998 | |
dc.identifier.uri | https://doi.org/10.1002/ps.4874 | |
dc.identifier.uri | http://www.locus.ufv.br/handle/123456789/19968 | |
dc.description.abstract | Susceptibility and the mechanism (s) governing tolerance/resistance to glyphosate were characterized in two putative-glyphosate-resistant Chloris barbata populations (R1 and R2), collected in Persian lime orchards from Colima State, Mexico, comparing them with one non-treated population (referred to as S). Glyphosate doses required to reduce fresh weight or cause mortality by 50% were 4.2–6.4 times higher in resistant populations than in the S population. The S population accumulated 4.3 and 5.2 times more shikimate than the R2 and R1 popu- lations, respectively. There were no differences in 14 C-glyphosate uptake between R and S populations, but the R plants translo- cated at least 12% less herbicide to the rest of plant and roots 96 h after treatment. Insignificant amounts of glyphosate were metabolized to aminomethyl phosphonate and glyoxylate in both R and S plants. The 5-enolpyruvylshikimate-3-phosphate syn- thase gene of the R populations contained the Pro106-Ser mutation, giving them a resistance 12 (R2) and 14.7 (R1) times greater at target-site level compared with the S population. The Pro106-Ser mutation governs the resistance to glyphosate of the R1 and R2 C barbata populations, but the impaired translocation could contribute to the resistance. These results confirm the first case of glyphosate resistance evolved in this species. | en |
dc.format | pt-BR | |
dc.language.iso | eng | pt-BR |
dc.publisher | Pest Management Science | pt-BR |
dc.relation.ispartofseries | v. 74, Issue 5, p. 1118-1124, May 2018 | pt-BR |
dc.rights | Society of Chemical Industry | pt-BR |
dc.subject | 5-enolpyruvylshikimate-3-phosphate synthase | pt-BR |
dc.subject | Herbicide resistance | pt-BR |
dc.subject | Impaired translocation | pt-BR |
dc.subject | Pro106-Ser mutation | pt-BR |
dc.subject | Purpletop chloris | pt-BR |
dc.title | From tolerance to resistance: mechanisms governing the differential response to glyphosate in Chloris barbata | en |
dc.type | Artigo | pt-BR |
Aparece nas coleções: | Fitotecnia - Artigos |
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