Bedoukian   RussellIPM   RussellIPM   Piezoelectric Micro-Sprayer


Home
Animal Taxa
Plant Taxa
Semiochemicals
Floral Compounds
Semiochemical Detail
Semiochemicals & Taxa
Synthesis
Control
Invasive spp.
References

Abstract

Guide

Alphascents
Pherobio
InsectScience
E-Econex
Counterpart-Semiochemicals
Print
Email to a Friend
Kindly Donate for The Pherobase

« Previous AbstractEarly formation of sexually dimorphic glomeruli in the developing olfactory lobe of the brain of the moth Manduca sexta    Next AbstractImportance of timing of olfactory receptor-axon outgrowth for glomerulus development in Manduca sexta »

J Neurobiol


Title:Axons of olfactory receptor cells of transsexually grafted antennae induce development of sexually dimorphic glomeruli in Manduca sexta
Author(s):Rossler W; Randolph PW; Tolbert LP; Hildebrand JG;
Address:"ARL Division of Neurobiology, University of Arizona, Tucson 85721-0077, USA"
Journal Title:J Neurobiol
Year:1999
Volume:38
Issue:4
Page Number:521 - 541
DOI: 10.1002/(sici)1097-4695(199903)38:4<521::aid-neu8>3.0.co;2-9
ISSN/ISBN:0022-3034 (Print) 0022-3034 (Linking)
Abstract:"The influence of olfactory receptor cell (ORC) axons from transsexually grafted antennae on the development of glomeruli in the antennal lobes (ALs), the primary olfactory centers, was studied in the moth Manduca sexta. Normally during metamorphic adult development, the pheromone-specific macroglomerular complex (MGC) forms only in the ALs of males, whereas two lateral female-specific glomeruli (LFGs) develop exclusively in females. A female AL innervated by ORC axons from a grafted male antenna developed an MGC with three glomeruli, like the MGC of a normal male AL. Conversely, a male AL innervated by ORC axons from a grafted female antenna lacked the MGC but exhibited LFGs. ORC axons from grafted male antenna terminated in the MGC-specific target area, even in cases when the antennal nerve (AN) entered the AL via an abnormal route. Within ectopic neuromas formed by ANs that had become misrouted and failed to enter the brain, male-specific axons were not organized and formed terminal branches in many areas. The results suggest the presence of guidance cues within the AL for male-specific ORC axons. Depending on the sex of the antennal innervation, glial borders formed in a pattern characteristic of the MGC or LFGs. The sex-specific number of projection neurons (PNs) in the medial group of AL neurons remained unaffected by the antennal graft, but significant changes occurred in the organization of PN arborizations. In gynandromorphic females, LFG-specific PNs extended processes into the induced MGC, whereas in gynandromorphic males, PNs became restricted to the LFGs. The results indicate that male-and female-specific ORC axons play important roles in determining the position, anatomical features, and innervation of sexually dimorphic glomeruli"
Keywords:"Animals Axons/*physiology/*transplantation Cell Adhesion Molecules, Neuronal/biosynthesis/chemistry/*genetics Cell Transplantation Female Male Manduca/*growth & development Metamorphosis, Biological Neuroglia/physiology Olfactory Receptor Neurons/*physiol;"
Notes:"MedlineRossler, W Randolph, P W Tolbert, L P Hildebrand, J G eng P01-NS28495/NS/NINDS NIH HHS/ Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. 1999/03/20 J Neurobiol. 1999 Mar; 38(4):521-41. doi: 10.1002/(sici)1097-4695(199903)38:4<521::aid-neu8>3.0.co; 2-9"

 
Back to top
 
Citation: El-Sayed AM 2024. The Pherobase: Database of Pheromones and Semiochemicals. <http://www.pherobase.com>.
© 2003-2024 The Pherobase - Extensive Database of Pheromones and Semiochemicals. Ashraf M. El-Sayed.
Page created on 22-11-2024