苦皮藤素Ⅳ对粘虫中肠组织影响的超微结构观察  

Ultrastructural effect of Celangulin Ⅳ on the midgut tissue of Mythimna separata larvae

作　　者：廉喜红[1] 刘惠霞[1] 吴文君[1] 

机构地区：[1]西北农林科技大学植保学院,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2005年第2期83-85,共3页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家自然科学基金重点项目(30130130)

摘　　要：　采用电子显微镜技术研究了苦皮藤素 对粘虫(Mythimnaseparata(Walker))中肠组织的影响。电镜观察结果表明,苦皮藤素 对粘虫中肠肠壁细胞的质膜和内膜系统有一定影响。在苦皮藤素 作用下,试虫的柱状细胞顶膜微绒毛扩张;线粒体肿胀;粗面内质网扩张,囊泡化;杯状细胞与柱状细胞之间间隙增大。这表明苦皮藤素 破坏了中肠细胞的结构,使中肠肠壁细胞损伤及细胞间隙增大,导致毒物易于穿过肠壁细胞间隙进入血淋巴,进而到达作用部位。Studies have been conducted with electric microscope on the ultrastructure of midgut on the armyworm larvae (Mythimna separata).The main results are as the followings:Celangulin Ⅳ had some effect on the plasmalemma and internal membrane system of the midgut cell of the armyworm larvae.It was characterized by the increases of the intercellular space between columnar cells and goblet cells with the microvilli of goblet cells dilatated.Endoplasmic reticulum (ER) was expanded with vesiculations appeared.Mitochondria of columnar cells were swollen.It indicated that celangulin Ⅳ had disruptive function on the structure of midgut cells.The increased space of intercellular and the lesion of midgut cells made the toxin easily come through the midgut cell and enter the hemocoel and finally come to the target.

关 键 词：苦皮藤素Ⅳ 粘虫 中肠肠壁细胞 

分 类 号：S482.39[农业科学—农药学]