THE OPTIC LOBE PROJECTION PATTERN OF POLARIZATION-SENSITIVE PHOTORECEPTOR CELLS IN DROSOPHILA-MELANOGASTER
THE OPTIC LOBE PROJECTION PATTERN OF POLARIZATION-SENSITIVE PHOTORECEPTOR CELLS IN DROSOPHILA-MELANOGASTER
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DOI：
10.1007/bf00318153
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发表时间：
1991-07-01
影响因子：
3.6
通讯作者：
RUBIN, GM
中科院分区：
文献类型：
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作者：
FORTINI, ME;RUBIN, GM
组织学染色野生型和sevenless转基因果蝇携带Rh 3-lacZ融合基因允许选择性可视化的偏振敏感的R7和R8感光细胞位于沿着背前眼缘。 β-半乳糖苷酶在这些细胞中的扩散表明，它们将长轴突投射到背后髓的两个最外周的突触目标行，从而定义了该视叶的专门边缘区。 边缘和非边缘Rh 3-lacZ表达的感光细胞在相同的组织学制剂的染色模式的比较表明，边缘细胞具有形态专门的轴突和突触末梢。 这些研究结果进行了讨论，参考相应的背缘眼和视叶区域的较大的双翅目苍蝇和丽蝇的神经解剖学，并在有关的能力，果蝇定向偏振光。
Histological staining of wild-type and sevenless transgenic Drosophila melanogaster bearing Rh3-lacZ fusion genes permits the selective visualization of polarization-sensitive R7 and R8 photoreceptor cells located along the dorsal anterior eye margin. Diffusion of beta-galactosidase throughout these cells reveals that they project long axons to the two most peripheral synaptic target rows of the dorsal posterior medulla, defining a specialized marginal zone of this optic lobe. Comparison of the staining patterns of marginal and nonmarginal Rh3-lacZ-expressing photoreceptor cells in the same histological preparations suggests that the marginal cells possess morphologically specialized axons and synaptic terminals. These findings are discussed with reference to the neuroanatomy of the corresponding dorsal marginal eye and optic lobe regions of the larger dipterans Musca and Calliphora, and in relation to the ability of Drosophila to orient to polarized light.