کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2010064 1066708 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of fraxinellone on the midgut ultrastructural changes of Mythimna separata Walker
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Effects of fraxinellone on the midgut ultrastructural changes of Mythimna separata Walker
چکیده انگلیسی

Extracted from the dried root bark of Dictamnus dasycarpus Turcz., Family Rutaceae, fraxinellone exhibited multiple bioactivities, e.g. feeding-deterrent, growth-control and toxic activities against insects. We investigated the effect of fraxinellone on fifth instar larvae of eastern armyworm, Mythimna separata Walker. Through traditional stomach-poison method, fraxinellone showed the delayed and strong stomach-poison activity. Light and electron microscope observations revealed, treatment with 20 mg/mL fraxinellone, increasing damages of the larvae midgut epithelium along with time. Fraxinellone destroyed the peritrophic membrane of the midgut of larvae of M. separata. The organelles of treated larvae of M. separata changed obviously, e.g. the rough endoplasmic reticulum dilated, some of mitochondrial cristaes disappeared and got vacuolated, the wall of globet cell invaginated, the inner organelle disordered, the chromatin became concentrated, and the quantities of secondary lysosome increased. Meanwhile, fraxinellone could let microvilli rupture or incline, even partially fall off.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pesticide Biochemistry and Physiology - Volume 98, Issue 2, October 2010, Pages 263–268
نویسندگان
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