Pool of Resistance Mechanisms to Glyphosate in Digitaria insularis

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dc.contributor.authorde Carvalho, Leonardo Bianco [UNESP]
dc.contributor.authorda Costa Aguiar Alves, Pedro Luis [UNESP]
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.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Cordoba
dc.contributor.institutionCSIC
dc.date.accessioned2014-05-20T13:13:13Z
dc.date.available2014-05-20T13:13:13Z
dc.date.issued2012-01-18
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.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.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipMICINN (Spain)
dc.description.sponsorshipIdMICINN (Spain): AGL2010-16774
dc.format.extent615-622
dc.identifierhttp://dx.doi.org/10.1021/jf204089d
dc.identifier.citationJournal of Agricultural and Food Chemistry. Washington: Amer Chemical Soc, v. 60, n. 2, p. 615-622, 2012.
dc.identifier.doi10.1021/jf204089d
dc.identifier.issn0021-8561
dc.identifier.urihttp://hdl.handle.net/11449/1070
dc.identifier.wosWOS:000299584600010
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofJournal of Agricultural and Food Chemistry
dc.relation.ispartofjcr3.412
dc.relation.ispartofsjr1,269
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectN-phosphonomethylglycineen
dc.subjectEPSPSen
dc.subjectweed resistanceen
dc.subjectmechanisms of resistanceen
dc.subjectsourgrassen
dc.titlePool of Resistance Mechanisms to Glyphosate in Digitaria insularisen
dc.typeArtigo
dcterms.licensehttp://pubs.acs.org/page/policy/nih/index.html
dcterms.rightsHolderAmer Chemical Soc
unesp.author.orcid0000-0003-2326-284X[9]
unesp.author.orcid0000-0001-8110-3471[1]
unesp.author.orcid0000-0002-7652-229X[8]
unesp.author.orcid0000-0001-8222-9949[3]
unesp.author.orcid0000-0003-2348-2121[2]
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Ciências Agrárias e Veterinárias, Jaboticabalpt
unesp.departmentBiologia - FCAVpt

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Jaboticabal - FCAV - Faculdade de Ciências Agrárias e Veterinárias