Genetic inheritance of cytochrome P450 - mediated metabolic resistance to chlorsulfuron in a multiple herbicide resistant Lolium rigidum population

Mostrar otras versiones (1)

Field evolved resistance to acetolactate synthase [ALS]-inhibiting herbicides in a multiple resistant Lolium rigidum population [VLR69] is known to be mainly due to enhanced rates of herbicide metabolism, likely involving cytochrome P450 monooxygenases. The present study investigates genetic inherit...

Descripción completa

Guardado en:
Detalles Bibliográficos
Otros Autores: Han, Heping, Yu, Qin, Vila Aiub, Martín Miguel, Powles, Stephen B.
Formato: Artículo
Lenguaje:Español
Materias:
CLONE
CYTOCHROME
CYTOCHROME P450
ENVIRONMENTAL CONDITIONS
ENZYME ACTIVITY
GENETIC ANALYSIS
GENETIC DIFFERENTIATION
GENETIC INHERITANCE
GRASS
HERBICIDE
HERBICIDE METABOLISM
HERBICIDE RESISTANCE
INHIBITION
INHIBITOR
LOLIUM RIGIDUM
METABOLISM
PESTICIDE RESISTANCE
PHENOTYPE
PHENOTYPIC PLASTICITY
POPULATION GENETICS
SPECIES DIVERSITY
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2014han.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
Descripción
Sumario:Field evolved resistance to acetolactate synthase [ALS]-inhibiting herbicides in a multiple resistant Lolium rigidum population [VLR69] is known to be mainly due to enhanced rates of herbicide metabolism, likely involving cytochrome P450 monooxygenases. The present study investigates genetic inheritance of P450-mediated metabolic resistance to the ALS-inhibiting herbicide chlorsulfuron. To this end, a P450-mediated, metabolism-based resistant sub-set of VLR69 was carefully selected using plant vegetative cloning, appropriate herbicide screen test and the known P450 inhibitor malathion. Both intermediate and near-dominant nuclear-encoded phenotypic resistance traits were observed in 14 reciprocal F1 families. The segregation of phenotypic chlorsulfuron resistance in ?-F2 families was analysed using genetic inheritance models involving one or two loci. The results from four ?-F2 families revealed complex patterns of genetic inheritance of P450-mediated metabolic resistance in genetically diverse and cross-pollinated species L.rigidum: multiple loci are likely involved and interact with herbicide rates and environmental conditions in mediating the resistance phenotype.
ISSN:0261-2194

Ejemplares similares