Glia-related circadian plasticity in the visual system of Diptera

The circadian changes in morphology of the first visual neuropil or lamina of Diptera represent an example of the neuronal plasticity controlled by the circadian clock (circadian plasticity). It is observed in terminals of the compound eye photoreceptor cells, the peripheral oscillators expressing t...

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Bibliographic Details
Published inFrontiers in physiology Vol. 4; p. 36
Main Author Górska-Andrzejak, Jolanta
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 01.01.2013
Subjects
circadian plasticity
Drosophila
glia
Musca
Physiology
Visual System
visual system
circadian plasticity
Musca
glia
Drosophila
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Summary:The circadian changes in morphology of the first visual neuropil or lamina of Diptera represent an example of the neuronal plasticity controlled by the circadian clock (circadian plasticity). It is observed in terminals of the compound eye photoreceptor cells, the peripheral oscillators expressing the clock genes. However, it has been found also in their postsynaptic partners, the L1 and L2 monopolar cells, in which the activity of the clock genes have not yet been detected. The circadian input that the L1 and L2 receive seems to originate not only from the retina photoreceptors and from the circadian pacemaker neurons located in the brain, but also from the glial cells that express the clock genes and thus contain circadian oscillators. This paper summarizes the morphological and biochemical rhythms in glia of the optic lobe, shows how they contribute to circadian plasticity, and discusses how glial clocks may modulate circadian rhythms in the lamina.
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Edited by: Elzbieta M. Pyza, Jagiellonian University, Poland
This article was submitted to Invertebrate Physiology, a section of the journal Frontiers in Physiology.
Reviewed by: Åsa M. E. Winther, Karolinska Institutet, Sweden; Ian A. Meinertzhagen, Dalhousie University, Canada
ISSN:1664-042X
1664-042X
DOI:10.3389/fphys.2013.00036