کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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4517403 | 1322542 | 2010 | 7 صفحه PDF | دانلود رایگان |
Selection for tolerance to 8 monoterpenoids (linalool, camphor, γ-terpinene, S-carvone, geraniol, estragole, E-anethole, and fenchone) in three pests of stored rice, Sitophilus oryzae, Rhyzopertha dominica and Cryptolestes pusillus, as well as the metabolic mechanisms implicated, was studied. Strains were selected for tolerance towards each monoterpenoid from susceptible insect populations for each of seven generations.After selection, tolerance was observed towards linalool, S-carvone and estragole in S. oryzae and towards camphor in C. pusillus. Populations of R. dominica were not observed to develop tolerance to monoterpenoids.The activity of three enzymatic systems detoxifying these monoterpenoids, microsomal P-450 monooxygenase, esterase, and glutathione S-transferase (GST), were analyzed to study the metabolic mechanisms involved. Esterases could be involved in S. oryzae tolerance whereas P-450 monooxygenases could be involved for most monoterpenoids in selected populations of R. dominica and C. pusillus.
Journal: Journal of Stored Products Research - Volume 46, Issue 1, January 2010, Pages 52–58