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Circadian rhythms in microorganisms: New complexities

Recent advances in understanding circadian (daily) rhythms in the genera Neurospora, Gonyaulax, and Synechococcus are reviewed and new complexities in their circadian systems are described. The previous model, consisting of a unidirectional flow of information from input to oscillator to output, has...

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Bibliographic Details
Published in:Annual review of microbiology 2004-01, Vol.58 (1), p.489-519
Main Authors: LAKIN-THOMAS, Patricia L, BRODY, Stuart
Format: Article
Language:English
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Summary:Recent advances in understanding circadian (daily) rhythms in the genera Neurospora, Gonyaulax, and Synechococcus are reviewed and new complexities in their circadian systems are described. The previous model, consisting of a unidirectional flow of information from input to oscillator to output, has now expanded to include multiple input pathways, multiple oscillators, multiple outputs; and feedback from oscillator to input and output to oscillator. New posttranscriptional features of the frq/white-collar oscillator (FWC) of Neurospora are described, including protein phosphorylation and degradation, dimerization, and complex formation. Experimental evidence is presented for frq-less oscillator(s) (FLO) downstream of the FWC. Mathematical models of the Neurospora system are also discussed.
ISSN:0066-4227
1545-3251
DOI:10.1146/annurev.micro.58.030603.123744