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J Comp Neurol

Title:		Plasticity in central olfactory processing and pheromone blend discrimination following interspecies antennal imaginal disc transplantation
Author(s):		Vickers NJ; Poole K; Linn CE;
Address:		"Department of Biology, University of Utah, Salt Lake City, Utah 84112, USA. vickers@biology.utah.edu"
Journal Title:		J Comp Neurol
Year:		2005
Volume:		491
Issue:		2
Page Number:		141 - 156
DOI:		10.1002/cne.20725
ISSN/ISBN:		0021-9967 (Print) 1096-9861 (Electronic) 0021-9967 (Linking)
Abstract:		"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 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 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"
Keywords:		"Animals Discrimination, Psychological/physiology Evoked Potentials/physiology Ganglia, Invertebrate/cytology/*transplantation Male Moths/*cytology/physiology Neuronal Plasticity/*physiology Olfactory Receptor Neurons/*cytology Pheromones/physiology Smell/;"
Notes:		"MedlineVickers, Neil J Poole, Kathy Linn, Charles E Jr eng R55 DC004443-01/DC/NIDCD NIH HHS/ 1 R55 DC04443-01/DC/NIDCD NIH HHS/ Comparative Study Research Support, N.I.H., Extramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. 2005/08/30 J Comp Neurol. 2005 Oct 17; 491(2):141-56. doi: 10.1002/cne.20725"