Plasticity in central olfactory processing and pheromone blend discrimination following interspecies antennal imaginal disc transplantation
| Autor: | Neil J. Vickers, Kathy Poole, Charles E. Linn |
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| Rok vydání: | 2005 |
| Předmět: |
Male
Olfactory receptor neuron Transplantation Heterologous Olfaction Moths Biology Article Olfactory Receptor Neurons Pheromones Discrimination Psychological Species Specificity medicine Animals Evoked Potentials Glomerulus (olfaction) Neuronal Plasticity General Neuroscience fungi Anatomy Sensory neuron Ganglia Invertebrate Smell Transplantation Imaginal disc medicine.anatomical_structure nervous system Developmental plasticity Antennal lobe Neuroscience |
| Zdroj: | The Journal of Comparative Neurology. 491:141-156 |
| ISSN: | 1096-9861 0021-9967 |
| DOI: | 10.1002/cne.20725 |
| Popis: | The antennal imaginal disc was transplanted between pre-metamorphic 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 both Helicoverpa zea donor to Heliothis virescens recipient (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 compliment. 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. |
| Databáze: | OpenAIRE |
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