2010
DOI: 10.1590/s0103-84782010001200001
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Propriedades enzimáticas da enzima ALS de Cyperus difformis e mecanismo de resistência da espécie ao herbicida pyrazosulfuron-ethyl

Abstract: RESUMO Cyperus difformis L. é uma planta daninha ocorrente em lavouras de arroz irrigado, que tem apresentado dificuldade de controle devido à resistência a herbicidas inibidores da enzima ALS. Os objetivos deste trabalho foram CAREY et al. (1997) and adapted by VARGAS et al. (1999)

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Cited by 7 publications
(4 citation statements)
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“…However, the K M values of the B 4 and B 13 biotypes were 20 and 25% higher, respectively, than that of the susceptible biotype (Table 1) (Ashigh & Tardif, 2007;Dal Magro et al, 2010), which suggests that resistance does not affect pyruvate binding. Similar results were found in Cyperus difformis L. biotypes resistant to pirazosulfuron-ethyl herbicide, in which the affinity of enzyme was not affected and the V max was 52% greater (Dal Magro et al, 2010).…”
Section: Results and Discussion Als Enzyme Activity And In Vitro Assamentioning
confidence: 87%
“…However, the K M values of the B 4 and B 13 biotypes were 20 and 25% higher, respectively, than that of the susceptible biotype (Table 1) (Ashigh & Tardif, 2007;Dal Magro et al, 2010), which suggests that resistance does not affect pyruvate binding. Similar results were found in Cyperus difformis L. biotypes resistant to pirazosulfuron-ethyl herbicide, in which the affinity of enzyme was not affected and the V max was 52% greater (Dal Magro et al, 2010).…”
Section: Results and Discussion Als Enzyme Activity And In Vitro Assamentioning
confidence: 87%
“…Although there are several studies about the resistance of C. difformis to herbicides (Galon et al, 2008;Dal Magro et al, 2010;Chiapinotto, Schaedler, Fernandes, Andres, & Lamego, 2017), little information is available about its biology and phenology. This occurs for the majority of the cultivation invaders, even for those that promote significant losses in agricultural crops in Brazil.…”
Section: Introductionmentioning
confidence: 99%
“…O manejo químico de ciperáceas na cultura do arroz é essencial para evitar danos econômicos, sendo realizado em sua maioria pelos herbicidas inibidores da enzima acetolactato sintase (ALS) (DAL MAGRO et al, 2010). Na agricultura, os inibidores da ALS são fundamentais para o controle de diversas plantas daninhas, fornecendo atividade foliar, residual no solo e amplo espectro de controle (GREEN;OWEN, 2011).…”
Section: Introductionunclassified