Double‐segment defining role of even‐skipped homologs along the evolution of insect pattern formation
Double‐segment defining role of even‐skipped homologs along the evolution of insect pattern formation
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偶数跳跃同源物在昆虫模式形成进化过程中的双段定义作用
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
Yoshiaki Suzuki
中科院分区：
文献类型：
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作者：
Xin Xu;P. Xu;K. Amanai;Yoshiaki Suzuki
最近对昆虫模式的研究表明，在系统发育不同的物种中，遗传等级可能大致保守，但成对规则基因在所有昆虫中的功能可能并不相同。为了了解配对规则基因作用的潜在进化变化，克隆了家蚕偶跳同源物，并研究了其在早期胚胎发生过程中的表达模式。家蚕的八条条纹以前后顺序逐渐表达。后来，这些条纹在前面消失了。在这个检测系统下，家蚕的偶跳条纹显然没有分解成相应的次级条纹，这与果蝇和谷盗有明显的区别。这些结果表明，家蚕偶数跳跃可能起到双节定义作用，并可能决定奇数的刻痕条纹。
Recent studies on insect patterning suggest that the genetic hierarchy may be roughly conserved in phylogenetically divergent species, but pair‐rule genes may not function identically in all insects. In order to understand potential evolutionary changes in the role of the pair‐rule genes, a Bombyx even‐skipped homolog was cloned and its expression pattern during early embryogenesis studied. Eight stripes of Bombyx even‐skipped were progressively expressed in an antero–posterior order. Later, these stripes disappeared anteriorly. Under this detection system, Bombyx even‐skipped stripes clearly do not resolve into the corre sponding secondary stripes, an obvious difference from Drosophila and Tribolium. These results suggest that Bombyx even‐skipped may serve a double‐segment defining role and may determine the odd‐numbered engrailed stripes.
蛾胚胎原肠胚形成过程中细胞表面分子的配对规则表达。
DOI：
10.1242/dev.107.1.143
发表时间：
1989
期刊：
Development (Cambridge, England)
影响因子：
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作者：
Carr,JN;Taghert,PH
通讯作者：
Taghert,PH