CELL CLONES AND PATTERN FORMATION - LINEAGE OF PHOTORECEPTOR CELLS IN COMPOUND EYE OF DROSOPHILA
CELL CLONES AND PATTERN FORMATION - LINEAGE OF PHOTORECEPTOR CELLS IN COMPOUND EYE OF DROSOPHILA
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DOI：
10.1007/bf00848423
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发表时间：
1977-01-01
期刊：
影响因子：
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通讯作者：
HOFBAUER, A
中科院分区：
文献类型：
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作者：
CAMPOSORTEGA, JA;HOFBAUER, A
采用细胞标记法研究了果蝇复眼内3h -胸腺嘧啶和隐性突变的光感受器细胞在第三幼虫期的谱系关系。感光细胞和次生色素细胞来源于不同的前体细胞。在这些实验条件下，受体细胞的前体产生。apprx。8个元素分化为2组不同的R细胞。其中1个细胞分化为R7，其余细胞分化为R1-R6中的任意1个。最后的细胞最初表现为相等，并且可以在相同或不同但相邻的小纲内分化。在R1-R6细胞类别中，每个元素的分化似乎取决于其起源的时间。本文还讨论了这些发现对基本模式形成的影响。
The genealogical relationships of photoreceptor cells within the compound eye of Drosophila were studied using cell labeling, with either 3H-thymidine or recessive mutations, during the 3rd larval stage. Photoreceptor and secondary pigment cells arose from different precursor cells. Under these experimental conditions, precursors of receptor cells gave rise to .apprx. 8 elements which differentiated as R cells of 2 different groups. Of the cells 1 differentiated as R7 and the remaining as any 1 of R1-R6. The last cells behaved initially as equivalent, and could differentiate within the same or within different, but neighboring ommatidia. The R1-R6 cell class in which each element differentiated, seemed to depend on the time of its origin. The implications of these findings for the formation of the ommatidial pattern are discussed.