Embryonic origin of the imaginal discs of the head of Drosophila melanogaster
Embryonic origin of the imaginal discs of the head of Drosophila melanogaster
复制标题
果蝇头部成虫盘的胚胎起源
DOI：
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
V. Hartenstein
中科院分区：
文献类型：
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作者：
A. Younossi‐Hartenstein;U. Tepass;V. Hartenstein
利用果蝇头原基的增强子诱捕线，研究了果蝇头原基在胚胎13期以后的胚胎发育。特别注意到成虫头部原基如何与幼虫头部节段相关的问题。第13期胚胎的唇唇芽位于唇唇的外侧位置，靠近唇唇感觉复合体（“骨骺”）。唇唇唇芽和感觉复合体均位于唇纹表达区前部。在整个胚胎发育晚期和幼虫期，舌唇芽形成心房顶部上皮的组成部分。唇盘起源于毗邻唇感觉复合体的外侧唇节（“唇下垂体”）。它部分与唇域重叠。头复归后，唇盘在心房腹外侧壁形成一个小袋。眼天线盘由占据头叶背后部分以及部分颌背节的相对较大的区域发育而来。在12-14阶段，由于细胞死亡，这一区域的细胞数量大大减少。头部复归后，假定的眼天线盘位于背囊外侧后部。这种组织外翻发生在孵化后的最初几个小时。在胚胎中，在假定的眼天线盘中没有en-表达。在三龄幼虫的三个不同区域开始表达。
The embryonic development of the primordia of the Drosophila head was studied by using an enhancer trap line expressed in these structures from embryonic stage 13 onward. Particular attention was given to the question of how the adult head primordia relate to the larval head segments. The clypeo-labral bud to the stage 13 embryo is located at a lateral position in the labrum adjacent to the labral sensory complex (“epiphysis”). Both clypeo-labral bud and sensory complex are located anterior to the engrailed-expression domain of the labrum. Throughout late embryogenesis and the larval period, the clypeo-labral bud forms integral part of the epithelium lining the roof of the atrium. The labial disc originates from the lateral labial segment adjacent to the labial sensory complex (“hypophysis”). It partially overlaps with the labial en-domain. After head involution, the labial disc forms a small pocket in the ventro-lateral wall of the atrium. The eye-antenna disc develops from a relatively large territory occupying the dorso-posterior part of the procephalic lobe, as well as parts of the dorsal gnathal segments. Cells in this territory are greatly reduced in number by cell death during stages 12–14. After head involution, the presumptive eye-antenna disc occupies a position in the lateral-posterior part of the dorsal pouch. Evagination of this tissue occurs during the first hours after hatching. In the embryo, no en-expression is present in the presumptive eye-antenna disc. en-expression starts in three separate regions in the third instar larva.
影响因子：
4.6
作者：
T. Wolff;D. Ready
通讯作者：
T. Wolff;D. Ready
果蝇头部唇形、变形和刻痕表达的发育和进化意义。
DOI：
10.1242/dev.113.1.273
发表时间：
1991
期刊：
Development (Cambridge, England)
影响因子：
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作者：
Diederich,RJ;Pattatucci,AM;Kaufman,TC
通讯作者：
Kaufman,TC