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Resumen
BACKGROUND: Digitaria sanguinalis has been identified as a species at high risk of evolving herbicide resistance, but thus far, there are no records of resistance to glyphosate. This species is one of the most common weeds of summer crops in extensive cropping areas in Argentina. This weed shows an extended period of seedling emergence with several overlapping cohorts during spring and summer, and it is commonly controlled with glyphosate. However, a D. [ver mas...]
dc.contributor.authorYanniccari, Marcos
dc.contributor.authorVázquez García, José Guadalupe
dc.contributor.authorGigon, Ramon
dc.contributor.authorPalma Bautista, Candelario
dc.contributor.authorVila-Aiub, Martín Miguel
dc.contributor.authorde Prado, Rafael
dc.dateinfo:eu-repo/date/embargoEnd/2023-04-26
dc.date.accessioned2022-04-26T12:05:53Z
dc.date.available2022-04-26T12:05:53Z
dc.date.issued2022-04
dc.identifier.issn1526-498X
dc.identifier.issn1526-4998
dc.identifier.otherhttps://doi.org/10.1002/ps.6940
dc.identifier.urihttp://hdl.handle.net/20.500.12123/11736
dc.identifier.urihttps://onlinelibrary.wiley.com/doi/abs/10.1002/ps.6940
dc.description.abstractBACKGROUND: Digitaria sanguinalis has been identified as a species at high risk of evolving herbicide resistance, but thus far, there are no records of resistance to glyphosate. This species is one of the most common weeds of summer crops in extensive cropping areas in Argentina. This weed shows an extended period of seedling emergence with several overlapping cohorts during spring and summer, and it is commonly controlled with glyphosate. However, a D. sanguinalis population was implicated as a putative glyphosate-resistant biotype based on poor control at recommended glyphosate doses. RESULTS: The field-collected D. sanguinalis population (Dgs R) from the Rolling Pampas has evolved glyphosate resistance. Differences in plant survival and shikimate levels after field recommended and higher glyphosate doses were evident between Dgs R and the known susceptible (Dgs S) population, and the resistance index was 5.1. No evidence of differential glyphosate absorption, translocation, metabolism, or basal EPSPS activity was found between Dgs S and Dgs R populations; however, a novel EPSPS Pro-106-His point substitution is likely the primary glyphosate resistance endowing mechanism. EPSPS in vitro enzymatic activity demonstrated that an 80-fold higher concentration of glyphosate is required in Dgs R to achieve similar EPSPS activity inhibition as in the Dgs S population. CONCLUSION: This study reports the first global case of glyphosate resistance in D. sanguinalis. This yet novel transversion at the second position of the EPSPS 106 codon demonstrates the intensity of glyphosate pressure in selecting unexpected glyphosate resistance alleles if they retain EPSPS functionality.eng
dc.formatapplication/pdfes_AR
dc.language.isoenges_AR
dc.publisherWileyes_AR
dc.rightsinfo:eu-repo/semantics/embargoedAccesses_AR
dc.sourcePest Management Science (First published: 22 April 2022)es_AR
dc.subjectDigitaria sanguinalises_AR
dc.subjectGlifosatoes_AR
dc.subjectGlyphosateeng
dc.subjectResistencia a los Herbicidases_AR
dc.subjectResistance to Herbicideseng
dc.subjectMalezases_AR
dc.subjectWeedseng
dc.subjectEscardaes_AR
dc.subjectWeed Controleng
dc.subjectGenéticaes_AR
dc.subjectGeneticseng
dc.subject.otherControl de Malezases_AR
dc.titleA novel EPSPS Pro-106-His mutation confers the first case of glyphosate resistance in Digitaria sanguinalises_AR
dc.typeinfo:ar-repo/semantics/artículoes_AR
dc.typeinfo:eu-repo/semantics/articlees_AR
dc.typeinfo:eu-repo/semantics/acceptedVersiones_AR
dc.description.origenEEA Barrowes_AR
dc.description.filFil: Yanniccari, Marcos Ezequiel. Instituto Nacional de Tecnología Agropecuaria (INTA). Chacra Experimental Integrada Barrow; Argentinaes_AR
dc.description.filFil: Yanniccari, Marcos Ezequiel. Consejo Nacional de Investigaciones Científicas y Técnicas. Laboratorio de Biotecnología y Genética Vegetal; Argentina.es_AR
dc.description.filFil: Yanniccari, Marcos Ezequiel. Universidad Nacional de La Pampa. Facultad de Agronomía; Argentinaes_AR
dc.description.filFil: Vázquez García, José G. Universidad de Córdoba. Department of Agroforestry, Plant Biochemistry and Molecular Biology; Españaes_AR
dc.description.filFil: Gigón, Ramón. Consultor privado en Control de Malezas; Argentinaes_AR
dc.description.filFil: Palma Bautista, Candelario. Universidad de Córdoba. Department of Agroforestry, Plant Biochemistry and Molecular Biology; Españaes_AR
dc.description.filFil: Vila Aiub, Martin Miguel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina.es_AR
dc.description.filFil: Vila Aiub, Martin Miguel. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; Argentina.es_AR
dc.description.filFil: de Prado, Rafael. Universidad de Córdoba. Department of Agroforestry, Plant Biochemistry and Molecular Biology; Españaes_AR
dc.subtypecientifico


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