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Artículo

Genetic control of a cytochrome P450 metabolism-based herbicide resistance mechanism in Lolium rigidum

Busi, R.; Vila Aiub, Martin MiguelIcon ; Powles, SB
Fecha de publicación: 05/2011
Editorial: Nature Publishing Group
Revista: Heredity
ISSN: 0018-067X
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Genética y Herencia

Resumen

The dynamics of herbicide resistance evolution in plants are influenced by many factors, especially the biochemical and genetic basis of resistance. Herbicide resistance can be endowed by enhanced rates of herbicide metabolism because of the activity of cytochrome P450 enzymes, although in weedy plants the genetic control of cytochrome P450-endowed herbicide resistance is poorly understood. In this study we have examined the genetic control of P450 metabolism-based herbicide resistance in a well-characterized Lolium rigidum biotype. The phenotypic resistance segregation in herbicide resistant and susceptible parents, F1, F2 and backcross (BC) families was analyzed as plant survival following treatment with the chemically unrelated herbicides diclofop-methyl or chlorsulfuron. Dominance and nuclear gene inheritance was observed in F1 families when treated at the recommended field doses of both herbicides. The segregation values of P450 herbicide resistance phenotypic traits observed in F2 and BC families was consistent with resistance endowed by two additive genes in most cases. In obligate out-crossing species such as L. rigidum, herbicide selection can easily result in accumulation of resistance genes within individuals.
Palabras clave: ADDITIVE GENES , DOMINANCE , HERBICIDE RESISTANCE , INHERITANCE , MENDELIAN SEGREGATION , POLYGENIC RESISTANCE
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/97685
URL: https://www.nature.com/articles/hdy2010124
DOI: http://dx.doi.org/10.1038/hdy.2010.124
Colecciones
Articulos(IFEVA)
Articulos de INST.D/INV.FISIOLOGICAS Y ECO.VINCULADAS A L/AGRIC
Citación
Busi, R.; Vila Aiub, Martin Miguel; Powles, SB; Genetic control of a cytochrome P450 metabolism-based herbicide resistance mechanism in Lolium rigidum; Nature Publishing Group; Heredity; 106; 5; 5-2011; 817-824
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