Evaluation of Resistance to Abamectin in the Populations of Tuta absoluta (Lepidoptera: Gelechiidae), Collected from Isfahan Province, Iran
محل انتشار: مجله علوم و فناوری کشاورزی، دوره: 24، شماره: 2
سال انتشار: 1400
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 60
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شناسه ملی سند علمی:
JR_JASTMO-24-2_009
تاریخ نمایه سازی: 22 آبان 1402
چکیده مقاله:
The tomato leafminer (Tuta absoluta Meyrick) (Lepidoptera: Gelechiidae) is one of the most important pests of tomato worldwide. In this study, resistance of different populations of the tomato leaf miner from Isfahan Province was evaluated against abamectin. The median Lethal Concentrations (LC۵۰) of different populations were estimated by bioassays using a leaf-dip method. The LC۵۰ value of abamectin in the reference population of Isfahan University of Technology (IUT) was estimated as ۵.۶۷ mg ai L-۱, while the population of Shahre-e-Abrisham ۱ showed the highest (۲۵-fold) resistance, with an LC۵۰ value of ۱۴۳.۱۸ mg ai L-۱. Pre-treatment of different populations with diethyl maleate (DEM) synergist, an inhibitor of glutathione-S-transferases (GSTs), increased significantly abamectin toxicity. GST activity was also found significantly different between resistant and reference populations. Triphenyl phosphate (TPP), an inhibitor of esterases (ESTs), reduced the LC۵۰ value of abamctin in the populations as much as ۱.۷۳- to ۳.۷۳-fold. The activity of ESTs in these populations was also significantly different. Furthermore, inhibition of cytochrome P۴۵۰ monooxygenases (CYP۴۵۰s) by piperonyl butoxide (PBO) increased abamectin toxicity between ۱.۳- to ۲.۹-fold in tested populations. The highest ratios of synergism for DEM (۵.۸۶), TPP (۳.۷۳-fold), and PBO (۲.۹۱-fold) were observed in Shahre-e-Abrisham ۱. It seems that GSTs and ESTs play a more important role in the resistance development against abamectin in the studied populations. High levels of resistance to abamectin in the collected populations from Isfahan Province shows the importance of insecticide resistance management based on the early detection of resistance and alternative use of insecticides.
کلیدواژه ها:
نویسندگان
M. Azizi
Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Islamic Republic of Iran.
J. Khajehali
Department of Plant Protection, College of Agriculture, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Islamic Republic of Iran.
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