Fecha/hora: 03/06/2024 22:30:04

Biblioteca(s): | INIA La Estanzuela.
Fecha corriente: | 07/10/2014
Fecha de la última actualización: | 11/10/2019
Autoria: | ALARCÓN-REVERTE, R.; GARCIA, M.A.; URZÚA, J.; FISCHER, A.J.
Afiliación: | MILTON ALEJANDRO GARCIA LATASA, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay.
Título: | Resistance to Glyphosate in Junglerice (Echinochloa colona) from California.
Año de publicación: | 2013
Fuente/Imprenta: | Weed Science, v. 61, n.1, p. 48-54,  2013.
ISSN: | 0043-1745
DOI: | 10.1614/WS-D-12-00073.1
Idioma: | Inglés
Notas: | Article history: Received: 14 May 2012/ Accepted: 7 August 2012/ Published: 1 January 2013.

Contenido:

Abstract:
A suspected glyphosate-resistant (R) junglerice population was collected from a glyphosate-R corn field near Durham in northern California where glyphosate had been applied at least twice a year for over 6 yr. Based on the amount of glyphosate required to reduce growth by 50% (ED50), the R population was 6.6 times more R than the susceptible (S) standard population. Based on the glyphosate concentration that inhibits EPSPS by 50% based on shikimate accumulation (I50) in leaf discs, R plants were four times more R than S plants. By 3 d after treatment with 0.42 kg ae ha?1 glyphosate, the S population had accumulated approximately five times more shikimate than the R population. No differences in [14C]-glyphosate uptake and translocation were detected between R and S plants. However, partial sequencing of the EPSPS gene revealed a mutation in R plants causing a proline to serine change at EPSPS position 106 (P106S). Our results reveal the first case of a P106S target site mutation associated with glyphosate resistance in junglerice.

Palabras-Clave: | 5-ENOLPYRUVYLSHIKIMATE-3-PHOSPHATE SYNTHASE; EPSPS; GLYPHOSATE LEAF UPTAKE; SHIKIMATE ACCUMULATION; TARGET SITE MUTATION.
Thesagro: | GLIFOSATO.
Categoría del tema: | H60 Malezas y escardas
Registro original: | INIA La Estanzuela (LE)
Ejemplares: | LE - (100452-1) - PXI - AP - DD -  -  -  - DIS