IDENTIFICATION OF UV, GREEN AND RED RECEPTORS, AND THEIR PROJECTION TO LAMINA IN THE CABBAGE BUTTERFLY, PIERIS-RAPAE
IDENTIFICATION OF UV, GREEN AND RED RECEPTORS, AND THEIR PROJECTION TO LAMINA IN THE CABBAGE BUTTERFLY, PIERIS-RAPAE
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DOI：
10.1007/bf00318399
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发表时间：
1991-01-01
影响因子：
3.6
通讯作者：
TOMINAGA, Y
中科院分区：
文献类型：
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作者：
SHIMOHIGASHI, M;TOMINAGA, Y
使用钴（III）-赖氨酸复合物作为电离标记物，通过常规和细胞内标记电子显微镜检查菜粉蝶（Pieris rapae）复眼中的光感受器。 在电生理实验中记录了细胞内五种类型的光谱敏感性。 它们的峰值分别约为 340、380、480、560 和 620 nm。 其中一个远端视网膜细胞 (R2) 是紫外线受体，而 R4 远端视网膜细胞是绿色受体。 基底视网膜细胞 R9 被发现是红色受体；它位于基底膜附近，具有双叶细胞体，每个叶中都有一个单独的细胞核。 连接两个叶的狭窄细胞质桥中存在少量横纹肌微绒毛。 每个小眼中六个视网膜细胞（R3-R8）的轴突终止于椎板（短视觉纤维）中的盒，而其他三个视网膜细胞（R1、R2和R9）的轴突延伸至髓质（长视觉纤维）。 因此，来自紫外线和红色受体的信息可能直接传递到髓质神经元，独立于其他光谱受体类型的信息。
The photoreceptors in the compound eye of a cabbage butterfly, Pieris rapae, were examined by conventional and intracellular-labeling electron microscopy by the use of the cobalt(III)-lysine complex as an ionized marker. Five types of spectral sensitivity were recorded intracellularly in electrophysiological experiments. They peaked at about 340, 380, 480, 560 and 620 nm, respectively. One of the distal retinula cells (R2) was a UV receptor, whereas the R4 distal retinula cell was a green receptor. The basal retinula cell, R9, was found to be a red receptor; it was localized near the basement membrane, having a bilobed cell body with an individual nucleus in each lobe. A small number of rhabdomere microvilli were present in a narrow cytoplasmic bridge connecting the two lobes. The axons of six retinula cells (R3-R8) in each ommatidium terminated at the cartridge in the lamina (short visual fiber), whereas those of the other three retinula cells, R1, R2 and R9, extended to the medulla (long visual fiber). The information from the UV and red receptors is therefore probably delivered directly to the medulla neurons, independent of that from the other spectral receptor types.