کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2010148 1066716 2007 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fipronil resistance mechanisms in the rice stem borer, Chilo suppressalis Walker
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Fipronil resistance mechanisms in the rice stem borer, Chilo suppressalis Walker
چکیده انگلیسی

Fipronil resistance mechanisms were studied between the laboratory susceptible strain and the selective field population of rice stem borer, Chilo suppressalis Walker in the laboratory. The borer population was collected from Wenzhou county, Zhejiang province. After five generations of selection, fipronil resistance ratio was 45.3-fold compared to the susceptible strain. Synergism experiments showed that the synergistic ratios of PBO, TPP and DEF on fipronil in susceptible and resistant strains of C. suppressalis were 7.55-, 1.93- and 2.91-fold, respectively, and DEM showed no obvious synergistic action on fipronil. Activities of carboxylesterase and microsomal-O-demethylase in the resistant strain were 1.89- and 1.36-fold higher that in susceptible strain, and no significant difference of glutathione-S-transferase activity was found between the resistant and susceptible strains. The Km and Vmax experiments also demonstrated that fipronil resistance of C. suppressalis was closely relative to the enhanced activities of carboxylesterase and microsomal-O-demethylase. Moreover, cross-resistance between fipronil and other conventional insecticides and the multiple resistant properties of the original Wenzhou’s population were also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pesticide Biochemistry and Physiology - Volume 89, Issue 3, November 2007, Pages 169–174
نویسندگان
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