The PRR family of transcriptional regulators reflects the complexity and evolution of plant circadian clocks

•PSEUDO-RESPONSE REGULATORS (PRRs) are conserved among plants.•PRRs are key components of circadian clocks in green alga and plants.•In Arabidopsis most PRRs are transcriptional repressors.•Transcription/translation circadian oscillators are not conserved among different taxa. Circadian clocks are i...

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Bibliographic Details
Published in:Current opinion in plant biology 2013-10, Vol.16 (5), p.621-629
Main Authors: Farré, Eva M, Liu, Tiffany
Format: Article
Language:English
Subjects:
Amino Acid Motifs
Amino Acid Sequence
Arabidopsis - genetics
Arabidopsis - physiology
Arabidopsis - radiation effects
Arabidopsis Proteins - genetics
Arabidopsis Proteins - metabolism
Arabidopsis thaliana
Biological Evolution
Chlorophycota
Circadian Clocks
circadian rhythm
Gene Expression Regulation, Plant
genes
Light
Models, Biological
Molecular Sequence Data
Multigene Family
Photoperiod
Phylogeny
Sequence Alignment
transcription (genetics)
Transcription Factors - genetics
Transcription Factors - metabolism
translation (genetics)
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Summary:•PSEUDO-RESPONSE REGULATORS (PRRs) are conserved among plants.•PRRs are key components of circadian clocks in green alga and plants.•In Arabidopsis most PRRs are transcriptional repressors.•Transcription/translation circadian oscillators are not conserved among different taxa. Circadian clocks are internal time-keeping mechanisms that provide an adaptive advantage by enabling organisms to anticipate daily changes and orchestrate biological processes accordingly. Circadian regulated pseudo-response regulators are key components of transcription/translation circadian networks in green alga and plants. Recent studies in Arabidopsis thaliana have shown that most of them act as transcriptional repressors and directly regulate output pathways suggesting a close relationship between the central oscillator and circadian regulated processes. Moreover, phylogenetic studies on this small gene family have shed light on the evolution of circadian clocks in the green lineage.
ISSN:1369-5266
1879-0356
DOI:10.1016/j.pbi.2013.06.015