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Yanniccari, M.; Vázquez García, J. G.; Gigón, R.; Palma Bautista, C.; Vila Aiub, M. M. & Prado, R. de (2022)"A novel EPSPS Pro - 106 - His mutation confers the first case of glyphosate resistance in digitaria sanguinalis". Pest Management Science,78, (7),p.3135-3143

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Título en inglés:
A novel EPSPS Pro - 106 - His mutation confers the first case of glyphosate resistance in digitaria sanguinalis
Autor/es:
Yanniccari, Marcos; Vázquez García, José Guadalupe; Gigón, Ramón; Palma Bautista, Candelario; Vila Aiub, Martín Miguel; Prado, Rafael de
Filiación:
Yanniccari, Marcos. Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Integrada Barrow (EEA Barrow). Barrow, Buenos Aires, Argentina.
Yanniccari, Marcos. Municipalidad de General La Madrid (MDA) - Instituto Nacional de Tecnología Agropecuaria (INTA). Estación Experimental Agropecuaria Integrada Barrow (EEA Barrow). Barrow, Buenos Aires, Argentina.
Yanniccari, Marcos. CONICET. La Pampa, Argentina.
Yanniccari, Marcos. Universidad Nacional de La Pampa. Facultad de Agronomía. La Pampa, Argentina.
Vázquez García, José Guadalupe. Universidad de Córdoba. Departamento de Agroforesteria, Bioquímica y Biología Molecular. Córdoba, España.
Gigón, Ramón. Consultor privado en control de malezas. Tres Arroyos, Buenos Aires Argentina.
Palma Bautista, Candelario. Universidad de Córdoba. Departamento de Agroforesteria, Bioquímica y Biología Molecular. Córdoba, España.
Vila Aiub, Martín Miguel. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Vila Aiub, Martín Miguel. CONICET – Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Vila Aiub, Martín Miguel. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Recursos Naturales y Ambiente. Cátedra de Ecología. Buenos Aires, Argentina.
Prado, Rafael de. Universidad de Córdoba. Departamento de Agroforesteria, Bioquímica y Biología Molecular. Córdoba, España.
Año:
2022
Título revista:
Pest Management Science
ISSN:
1526-498X
Volumen:
78
Número:
7
Páginas:
3135-3143
Temas:
TARGET SITE RESISTANCE; LARGE CRABGRASS; PUNCTUAL MUTATION; TRANSVERSION
Idioma:
Inglés
URL al Editor:

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 weed is one of the most common weeds of summer crops in extensive cropping areas in Argentina. It shows an extended period of seedling emergence with several overlapping cohorts during spring and summer, and 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; 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 probably 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 to that in the Dgs S population. CONCLUSION: This study reports the first global case of glyphosate resistance in D. sanguinalis. This unlikely 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.

Citación:

---------- APA ----------

Yanniccari, M.; Vázquez García, J. G.; Gigón, R.; Palma Bautista, C.; Vila Aiub, M. M. & Prado, R. de (2022). A novel EPSPS Pro - 106 - His mutation confers the first case of glyphosate resistance in digitaria sanguinalis. Pest Management Science,78, (7),p.3135-3143
10.1002/ps.6940

---------- CHICAGO ----------

Yanniccari, Marcos, Vázquez García, José Guadalupe, Gigón, Ramón, Palma Bautista, Candelario, Vila Aiub, Martín Miguel, Prado, Rafael de. 2022. "A novel EPSPS Pro - 106 - His mutation confers the first case of glyphosate resistance in digitaria sanguinalis". Pest Management Science 78, no.7:3135-3143.
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http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2022yanniccari