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当前位置: 首页 > 文章 > 苦皮藤素Ⅳ和Ⅴ混合物对果蝇幼虫神经肌肉兴奋性接点电位的影响 昆虫学报 2005,48 (6) 56-60
Position: Home > Articles > Effects of the mixture of celangulin Ⅳ and Ⅴ from Celastrus angulatus Max. on excitatory junction potentials of Drosophila melanogaster larvae Acta Entomologica Sinica 2005,48 (6) 56-60

苦皮藤素Ⅳ和Ⅴ混合物对果蝇幼虫神经肌肉兴奋性接点电位的影响

作  者：
胡兆农;吴文君;贺秉军;刘安西
单  位：
南开大学生物系;西北农林科技大学植物保护学院
关键词：
植物杀虫剂;苦皮藤素;混合物;兴奋性接点电位;细胞内微电极记录
摘  要：
利用细胞内微电极记录技术研究了杀虫植物苦皮藤Celastrus angulatusMax.中麻醉成分苦皮藤素Ⅳ和毒杀成分苦皮藤素Ⅴ混合物对果蝇Drosophila melanogaster3龄幼虫腹纵肌神经肌肉兴奋性接点电位(EJPs)的作用。结果表明,苦皮藤素Ⅳ比例较高(Ⅳ∶Ⅴ=3∶1)时对EJPs的影响与单用苦皮藤素Ⅳ差不多,而苦皮藤素Ⅴ比例较高(Ⅳ∶Ⅴ=1∶1和1∶3)时可使EJPs阻断时间明显延长。根据以上结果初步认为,虽然苦皮藤素Ⅳ和Ⅴ单独对EJPs的阻断作用基本相似,但它们对突触谷氨酸受体通道的影响存在明显差异。
译  名：
Effects of the mixture of celangulin Ⅳ and Ⅴ from Celastrus angulatus Max. on excitatory junction potentials of Drosophila melanogaster larvae
作  者：
HU Zhao-Nong1, WU Wen-Jun1, HE Bing-Jun2, Liu An-Xi 2 (1. College of Plant Protection, Northwest Science and Technology University of Agriculture and Forestry, Yangling, Shaanxi 712100, China; 2. Department of Biology, Nankai University, Tianjin 300071, China)
关键词：
Botanical insecticides; celangulin; mixture; excitatory junction potentials (EJPs); intracellular microelectrode recording
摘  要：
Celangulin Ⅳ and Ⅴ isolated from the root bark of the Chinese bittersweet, Celastrus angulatus Max. are the major active insecticidal ingredients of this plant. The mixed effects of celangulin Ⅳ and Ⅴ on insect neuromuscular excitatory junction potentials (EJPs) were studied by using the intracellular microelectrode recording on the ventral longitudinal body-wall muscle fibers of the 3rd instar larvae of Drosophila melanogaster. The results indicated that the effects of the mixture of celangulin Ⅳ and Ⅴ on EJPs of D. melanogaster larvae, in which celangulin Ⅳ was in higher ratio, were same as that of celangulin Ⅳ. The blocking time of EJPs was delayed by the mixture of celangulin Ⅳ and Ⅴ, in which celangulinⅤ was in higher ratio. In conclusion, celangulin Ⅳ and Ⅴ could have different effects on glutamate potential of insect synapses.

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