Document Detail

Morning and Evening Oscillators Cooperate to Reset Circadian Behavior in Response to Light Input.
MedLine Citation:
PMID:  24746814     Owner:  NLM     Status:  Publisher    
Light is a crucial input for circadian clocks. In Drosophila, short light exposure can robustly shift the phase of circadian behavior. The model for this resetting posits that circadian photoreception is cell autonomous: CRYPTOCHROME senses light, binds to TIMELESS (TIM), and promotes its degradation, which is mediated by JETLAG (JET). However, it was recently proposed that interactions between circadian neurons are also required for phase resetting. We identify two groups of neurons critical for circadian photoreception: the morning (M) and the evening (E) oscillators. These neurons work synergistically to reset rhythmic behavior. JET promotes acute TIM degradation cell autonomously in M and E oscillators but also nonautonomously in E oscillators when expressed in M oscillators. Thus, upon light exposure, the M oscillators communicate with the E oscillators. Because the M oscillators drive circadian behavior, they must also receive inputs from the E oscillators. Hence, although photic TIM degradation is largely cell autonomous, neural cooperation between M and E oscillators is critical for circadian behavioral photoresponses.
Pallavi Lamba; Diana Bilodeau-Wentworth; Patrick Emery; Yong Zhang
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-4-15
Journal Detail:
Title:  Cell reports     Volume:  -     ISSN:  2211-1247     ISO Abbreviation:  Cell Rep     Publication Date:  2014 Apr 
Date Detail:
Created Date:  2014-4-21     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101573691     Medline TA:  Cell Rep     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2014 The Authors. Published by Elsevier Inc. All rights reserved.
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