Moonlight detection by Drosophila's endogenous clock depends on multiple photopigments in the compound eyes
Many organisms change their activity on moonlit nights. Even the fruit fly Drosophila melanogaster responds to moonlight with a shift of activity into the night, at least under laboratory conditions. The compound eyes have been shown to be essential for the perception of moonlight, but it is unknown...
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Published in | Journal of biological rhythms Vol. 29; no. 2; p. 75 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
United States
01.04.2014
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Abstract | Many organisms change their activity on moonlit nights. Even the fruit fly Drosophila melanogaster responds to moonlight with a shift of activity into the night, at least under laboratory conditions. The compound eyes have been shown to be essential for the perception of moonlight, but it is unknown which of the 5 rhodopsins in the eyes are responsible for the observed moonlight effects. Here, we show that the outer (R1-R6) and inner (R7 and R8) photoreceptor cells in a fly's ommatidium interact in a complex manner to provoke the moonlight effects on locomotor activity. The shift of the evening activity peak into the night depends on several rhodopsins in the inner and outer photoreceptor cells. The increase in relative nocturnal activity in response to moonlight is mainly mediated by the rhodopsin 6-expressing inner photoreceptor cell R8 together with the rhodopsin 1-expressing outer receptor cells (R1-R6), whereas just rhodopsin 1 of R1 to R6 seems necessary for increasing nocturnal activity in response to increasing daylight intensity. |
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AbstractList | Many organisms change their activity on moonlit nights. Even the fruit fly Drosophila melanogaster responds to moonlight with a shift of activity into the night, at least under laboratory conditions. The compound eyes have been shown to be essential for the perception of moonlight, but it is unknown which of the 5 rhodopsins in the eyes are responsible for the observed moonlight effects. Here, we show that the outer (R1-R6) and inner (R7 and R8) photoreceptor cells in a fly's ommatidium interact in a complex manner to provoke the moonlight effects on locomotor activity. The shift of the evening activity peak into the night depends on several rhodopsins in the inner and outer photoreceptor cells. The increase in relative nocturnal activity in response to moonlight is mainly mediated by the rhodopsin 6-expressing inner photoreceptor cell R8 together with the rhodopsin 1-expressing outer receptor cells (R1-R6), whereas just rhodopsin 1 of R1 to R6 seems necessary for increasing nocturnal activity in response to increasing daylight intensity. |
Author | Grebler, Rudi Peschel, Nicolai Schlichting, Matthias Yoshii, Taishi Helfrich-Förster, Charlotte |
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BackLink | https://www.ncbi.nlm.nih.gov/pubmed/24682202$$D View this record in MEDLINE/PubMed |
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Snippet | Many organisms change their activity on moonlit nights. Even the fruit fly Drosophila melanogaster responds to moonlight with a shift of activity into the... |
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SubjectTerms | Animals Biological Clocks - physiology Drosophila melanogaster - genetics Drosophila melanogaster - metabolism Drosophila melanogaster - physiology Drosophila Proteins - genetics Drosophila Proteins - metabolism Eye - cytology Eye - metabolism Eye - radiation effects Immunohistochemistry Light Microscopy, Confocal Moon Motor Activity - physiology Mutation Ocular Physiological Phenomena - radiation effects Photoreceptor Cells, Invertebrate - metabolism Photoreceptor Cells, Invertebrate - physiology Rhodopsin - genetics Rhodopsin - metabolism |
Title | Moonlight detection by Drosophila's endogenous clock depends on multiple photopigments in the compound eyes |
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