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dc.contributor.authorde Carvalho, Leonardo Bianco-
dc.contributor.authorda Costa Aguiar Alves, Pedro Luis-
dc.contributor.authorGonzalez-Torralva, Fidel-
dc.contributor.authorEnrique Cruz-Hipolito, Hugo-
dc.contributor.authorMaria Rojano-Delgado, Antonia-
dc.contributor.authorDe Prado, Rafael-
dc.contributor.authorGil-Humanes, Javier-
dc.contributor.authorBarro, Francisco-
dc.contributor.authorLuque de Castro, Maria Dolores-
dc.identifier.citationJournal of Agricultural and Food Chemistry. Washington: Amer Chemical Soc, v. 60, n. 2, p. 615-622, 2012.-
dc.description.abstractDigitaria insularis biotypes resistant to glyphosate have been detected in Brazil. Studies were carried out in controlled conditions to determine the role of absorption, translocation, metabolism, and gene mutation as mechanisms of glyphosate resistance in D. insularis. The susceptible biotype absorbed at least 12% more C-14-glyphosate up to 48 h after treatment (HAT) than resistant biotypes. High differential C-14-glyphosate translocation was observed at 12 HAT, so that >70% of the absorbed herbicide remained in the treated leaf in resistant biotypes, whereas 42% remained in the susceptible biotype at 96 HAT. Glyphosate was degraded to aminomethylphosphonic acid (AMPA), glyoxylate, and sarcosine by >90% in resistant biotypes, whereas a small amount of herbicide (up to 11%) was degraded by the susceptible biotype up to 168 HAT. Two amino acid changes were found at positions 182 and 310 in EPSPS, consisting of a proline to threonine and a tyrosine to cysteine substitution, respectively, in resistant biotypes. Therefore, absorption, translocation, metabolism, and gene mutation play an important role in the D. insularis glyphosate resistance.en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
dc.description.sponsorshipMICINN (Spain)-
dc.publisherAmer Chemical Soc-
dc.sourceWeb of Science-
dc.subjectweed resistanceen
dc.subjectmechanisms of resistanceen
dc.titlePool of Resistance Mechanisms to Glyphosate in Digitaria insularisen
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)-
dc.contributor.institutionUniv Cordoba-
dc.description.affiliationSão Paulo State Univ, Dept Appl Biol Agr, BR-14884900 Jaboticabal, Brazil-
dc.description.affiliationUniv Cordoba, Dept Agr Chem & Edaphol, E-14071 Cordoba, Spain-
dc.description.affiliationCSIC, Inst Agr Sostenible, E-14080 Cordoba, Spain-
dc.description.affiliationUniv Cordoba, Dept Analyt Chem, E-14071 Cordoba, Spain-
dc.description.affiliationUnespSão Paulo State Univ, Dept Appl Biol Agr, BR-14884900 Jaboticabal, Brazil-
dc.description.sponsorshipIdMICINN (Spain): AGL2010-16774-
dc.rights.accessRightsAcesso restrito-
dc.relation.ispartofJournal of Agricultural and Food Chemistry-
Appears in Collections:Artigos, TCCs, Teses e Dissertações da Unesp

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