NDLI: Putative circadian pacemaker cells in the antenna of the hawkmoth Manduca sexta

Content Provider	Springer Nature Link
Author	Schuckel, Julia Siwicki, Kathleen K. Stengl, Monika
Copyright Year	2007
Abstract	Antennal sensory neurons in the fruit fly Drosophila melanogaster express circadian rhythms in the clock gene PERIOD (PER) and appear to be sufficient and necessary for circadian rhythms in olfactory responses. Given recent evidence for daily rhythms of pheromone responses in the antenna of the hawkmoth Manduca sexta, we examined whether a peripheral PER-based circadian clock might be present in this species. Several different cell types in the moth antenna were recognized by monoclonal antibodies against Manduca sexta PER. In addition to PER-like staining of pheromone-sensitive olfactory receptor neurons and supporting cells, immunoreactivity was detected in beaded branches contacting the pheromone-sensitive sensilla. The nuclei of apparently all sensory receptor neurons, of sensilla supporting cells, of epithelial cells, and of antennal nerve glial cells were PER-immunoreactive. Expression of per mRNA in antennae was confirmed by the polymerase chain reaction, which showed stronger expression at Zeitgeber-time 15 compared with Zeitgeber-time 3. This evidence for the expression of per gene products suggests that the antenna of the hawkmoth contains endogenous circadian clocks.
Starting Page	271
Ending Page	278
Page Count	8
File Format	PDF
ISSN	0302766X
Journal	Cell and Tissue Research
Volume Number	330
Issue Number	2
e-ISSN	14320878
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-09-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Circadian rhythms Olfaction Pheromone transduction Glia PERIOD Insect Hawkmoth Molecular Medicine Proteomics Human Genetics
Content Type	Text
Resource Type	Article
Subject	Cell Biology Histology Pathology and Forensic Medicine

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