Identification and Characterization of Mesotrione-Resistant Grain Sorghum [Sorghum bicolor (L.) Moench]: A Viable Option for Postemergence Grass Weed Control.
J Agric Food Chem
; 71(2): 1035-1045, 2023 Jan 18.
Article
em En
| MEDLINE
| ID: mdl-36602944
ABSTRACT
Mesotrione is effective in controlling a wide spectrum of weeds in corn but not registered for postemergence use in sorghum because of crop injury. We screened a sorghum germplasm collection and identified two mesotrione-resistant sorghum genotypes (G-1 and G-10) and one susceptible genotype (S-1) in an in vitro plate assay. A mesotrione dose-response assay under greenhouse and field conditions confirmed that G-1 and G-10 are highly resistant compared to S-1. We found enhanced metabolism of mesotrione in G-1 and G-10 using HPLC assay, and a significant reduction in biomass accumulation was found in G-1 and G-10 plants pretreated with cytochrome P450 (CYP)-inhibitors malathion or piperonyl butoxide, indicating the involvement of CYPs in the metabolism of mesotrione. Genetic analyses using F1 and F2 progenies generated by crossing G-1 and G-10 separately with S-1 revealed that mesotrione resistance in sorghum is controlled by a single dominant gene along with several genes with minor effects.
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1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Sorghum
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Revista:
J Agric Food Chem
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Estados Unidos