摘要
生物测时是昆虫的基本生理功能。昆虫测时功能及作用机制的研究是时间生物学前沿研究内容之—。光感应型昆虫生物钟 ,光信号由眼、脑—眼两种感知类型 ,驱动部位也有视叶边缘腹侧部分的细胞体和脑两类 ;遗传控制基因是per,不同突变体perDNA之间仅有 1个碱基的差异。家蚕卵内的酯酶A4(EA4)是一种时间间隔测定酶 ,感知低温、盐酸刺激等信息 ,启动倒计时型滞育生物钟 ,EA4的测时功能与自身的结构有关 ,受蚕卵内的多肽抑制因子 (PIN)
Biological clock was the primary physiological function for insect.Study on function and mechanism of biological clock was one of time_biology frontiers.For the light_sensed biological clock,there were eye and eye_brain,two kinds of sensibility to light,and brain and cells on the flank of optic lobes'edge,two kinds of driving parts,and the hereditary gene was p er ,there was only a base different among different mutants of p er DNA.The esterase A4(EA 4) was a kind of time_interval determining enzyme in silkworm eggs,which could sense low temperature and hydrochloric acid stimilus and switch on biological clock.The time_interval determining function of EA4 had relations with it structure and was controlled by Peptide Inhibitory Needle(PIN) in silkworm eggs.
出处
《常熟高专学报》
2000年第4期56-61,共6页
Journal of Changshu College
关键词
昆虫
生物钟
测时机构
insect,biological clock,structure,time determining,mechanism
