家蚕胚胎滞育的分子机理研究  

Molecular Research Progress on Embryonic Diapause of the Silkworm,Bombyx mori

作　　者：顾燕燕[1] 华荣胜[1] 时连根[1] 

机构地区：[1]浙江大学动物科学学院,杭州310029

出　　处：《科技通报》2008年第6期842-846,共5页Bulletin of Science and Technology

基　　金：国家自然科学基金项目(30571406)

摘　　要：家蚕滞育发生于胚胎发育早期,为卵滞育型,由遗传和环境条件支配。在蛹期由咽下神经节合成和分泌的滞育激素,在其滞育过程中起到了决定性作用。滞育激素编码基因的表达,引发咽下神经节的12个细胞合成与分泌滞育激素,滞育激素通过卵巢细胞上滞育激素受体的介导而进入卵内,调节卵内一系列物质代谢,从而实现滞育发动或滞育解除等生理过程。本文简述了滞育激素的结构与功能、滞育激素的编码基因与表达、滞育激素受体基因及其表达等研究成果。Diapause of the silkworm,Bombyx mori,a kind of egg diapause, happens in the early stages of embryonic development,decided by both inheritance and environment. Diapause hormone （DH）,which is secreted by the suboesophageal ganglion of the silkworm in pupae period,plays a key role in the process of the embryo diapause. The expression of DH gene arose the secretion of DH in 12 cells of suboesophageal ganglion,then the peptide goes into the eggs through the DH receptor on the surface of ovarian cells,regulating the material metabolism,ultimately deciding on the start or the end of diapause. The function and structure of DH peptide,the character and expression of DH gene as well as DH receptor gene are discussed here.

关 键 词：家蚕 滞育激素 滞育激素受体 G蛋白偶联受体 

分 类 号：S881.2[农业科学—特种经济动物饲养]