Plasticity in central olfactory processing and pheromone blend discrimination following interspecies antennal imaginal disc transplantation.
Plasticity in central olfactory processing and pheromone blend discrimination following interspecies antennal imaginal disc transplantation.
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种间触角成虫盘移植后中枢嗅觉处理和信息素混合辨别的可塑性。
DOI：
10.1002/cne.20725
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
LinnJr,CharlesE
中科院分区：
文献类型：
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作者：
Vickers,NeilJ;Poole,Kathy;LinnJr,CharlesE
将触角成虫盘移植到两种不同鳞翅目蛾的前变态雄性幼虫之间。在成虫羽化后，对棉铃虫（Helicoverpazeadonor）触角叶的33个中枢嗅觉神经元进行了电生理记录，并将其移植到烟夜蛾受体（Z-V）和相互（V-Z）。在来自移植的触角成虫盘的感觉神经元输入的影响下，大多数触角叶投射神经元（29/33）被归类为属于以前在供体物种雄性中遇到的生理类别。此外，当染色时，这些神经元中的许多神经元的树突乔木仅限于其生理学预测的供体诱导的肾小球位置。然而，也发现了一些具有意外生理特征的神经元（4/33），但仅在V-Z移植中。这些配置文件有助于解释为什么一些V-Z双边移植能够在飞行隧道生物测定中对两种信息素混合物做出反应，这是一个不可预见的结果，与供体天线开发正常供体天线嗅觉受体神经元互补的假设相反。在V-Z移植雄性中的几个神经元的培养也显示出不寻常的形态学特征，包括多肾小球树突状乔木和“不正确的”肾小球位置。这些结果表明，中央嗅觉神经元的最终树突状分支模式的发育可塑性，包括能够殖民和整合输入地形新颖的供体肾小球，从正常受体触角叶中发现的不同。神经学比较杂志491：141-156，2005.© 2005 Wiley利斯公司
The antennal imaginal disc was transplanted between premetamorphic male larvae of two different Lepidopteran moth species. Following adult eclosion, electrophysiological recordings were made from 33 central olfactory neurons in the antennal lobes of bothHelicoverpa zeadonor toHeliothis virescensrecipient (Z‐V) and reciprocal (V‐Z) transplants. Under the influence of sensory neuron input derived from the transplanted antennal imaginal disc, most antennal lobe projection neurons (29/33) were classified as belonging to physiological categories encountered previously in donor species males. Furthermore, when stained many of these neurons had dendritic arbors restricted to donor‐induced glomerular locations predicted by their physiology. However, some neurons with unexpected physiological profiles were also identified (4/33), but only in V‐Z transplants. These profiles help to explain why some V‐Z bilateral transplants were able to respond to both pheromone blends in flight tunnel bioassays, an unforeseen result counter to the assumption that a donor antenna develops a normal donor antennal olfactory receptor neuron complement. Stainings of several neurons in V‐Z transplant males also revealed unusual morphological features including multiglomerular dendritic arbors and “incorrect” glomerular locations. These results indicate a developmental plasticity in the final dendritic arborization pattern of central olfactory neurons, including an ability to colonize and integrate inputs across topographically novel donor glomeruli, different from those found in the normal recipient antennal lobe. J. Comp. Neurol. 491:141–156, 2005. © 2005 Wiley‐Liss, Inc.