کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2010096 1066711 2008 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure–activity relationships of pheromonostasis induced by ACCase-inhibitor herbicides in the moth Helicoverpa armigera
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Structure–activity relationships of pheromonostasis induced by ACCase-inhibitor herbicides in the moth Helicoverpa armigera
چکیده انگلیسی

Many moth sex pheromone blends are derived from fatty acids and their production is regulated by a Pheromone Biosynthesis Activating Neuropeptide (PBAN). In prior work we showed that the herbicide Diclofop-acid, an acetyl-coenzyme A carboxylase (ACCase) inhibitor, inhibits PBAN-induced sex pheromone production in vitro. In this work we extend our study showing that several other herbicides, belonging to the 2-aryloxyphenoxypropionate (‘FOP’) and the cyclohexandione-oxime (‘DIM’) families significantly inhibit pheromone production by adult females whilst survival is unaffected by treatment. Enzyme activity in vitro and kinetic analysis revealed a Km of 0.35 μM with Ki values of 0.1 and 0.28 μM due to Tralkoxydim and Diclofop inhibition, respectively. Inhibitory activity on PBAN-induced pheromone production by all herbicides tested revealed a potency order: Tralkoxydim > Clodinafop > Cycloxidim > Haloxyfop > Diclofop > Fenoxaprop > Fluazifop > Quizalofop, Quizalofop being inactive. Differences in inhibition efficiencies may be attributed to different binding sites on the enzyme or to the polarity and solubility of these compounds.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pesticide Biochemistry and Physiology - Volume 91, Issue 3, July 2008, Pages 153–159
نویسندگان
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