Comprehensive analysis of circadian periodic pattern in plant transcriptome.
BACKGROUND
Circadian rhythm is a crucial factor in orchestration of plant physiology, keeping it in synchrony with the daylight cycle. Previous studies have reported that up to 16% of plant transcriptome are circadially expressed.


RESULTS
Our studies of mammalian gene expression revealed circadian baseline oscillation in nearly 100% of genes. Here we present a comprehensive analysis of periodicity in two independent data sets. Application of the advanced algorithms and analytic approached already tested on animal data reveals oscillation in almost every gene of Arabidopsis thaliana.


CONCLUSIONS
This study indicates an even more pervasive role of oscillation in molecular physiology of plants than previously believed. Earlier studies have dramatically underestimated the prevalence of circadian oscillation in plant gene expression.
Ptitsyn
Andrey
A
Center for Bioinformatics, Department of Microbiology, Immunology and Pathology, Colorado State University, Campus delivery 1682 Fort Collins, CO 80523, USA. Andrey.Ptitsyn@colostate.edu
D017360:Arabidopsis / Q000502:physiology*; D029681:Arabidopsis Proteins / Q000378:metabolism*; D001683:Biological Clocks / Q000502:physiology; D002940:Circadian Rhythm / Q000502:physiology*; D020869:Gene Expression Profiling / Q000379:methods*; D018506:Gene Expression Regulation, Plant / Q000502:physiology*; D020543:Proteome / Q000378:metabolism*; D014157:Transcription Factors / Q000378:metabolism*
D029681:Arabidopsis Proteins; D020543:Proteome; D014157:Transcription Factors
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