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Contribution of non-target-site resistance in imidazolinone-resistant Imisun sunflower Bragantia
Breccia,Gabriela; Gil,Mercedes; Vega,Tatiana; Altieri,Emiliano; Bulos,Mariano; Picardi,Liliana; Nestares,Graciela.
ABSTRACT The first commercial herbicide-resistant trait in sunflower (Helianthus annuus L.) is known as ‘Imisun’. Imidazolinone resistance in Imisun cultivars has been reported to be genetically controlled by a major gene (known as Imr1 or Ahasl1-1) and modifier genes. Imr1 is an allelic variant of the Ahasl1 locus that codes for the acetohydroxyacid synthase, which is the target site of these herbicides. The mechanism of resistance endowed by modifier genes has not been characterized and it could be related to non-target-site resistance. The objective of this study was to evaluate the role of cytochrome P450 monooxygenases (P450s) in Imisun resistance. The response to imazapyr herbicide in combination with P450s inhibitor malathion was evaluated in 2...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Helianthus annuus L.; Cytochrome P450 monooxygenases; Imazapyr; Herbicide resistance.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000400536
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