GEO Logo
   NCBI > GEO > Accession DisplayHelp Not logged in | LoginHelp
GEO help: Mouse over screen elements for information.
Series GSE4 Query DataSets for GSE4
Status Public on Jul 20, 2001
Title Diurnal and Circadian-Regulated Genes in Arabidopsis
Organism Arabidopsis thaliana
Experiment type Expression profiling by array
Summary Plants respond to day/night cycling in a number of physiological ways. At the mRNA level, the expression of some genes changes during the 24-hr period. To identify novel genes regulated in this way, we used microarrays containing 11,521 Arabidopsis expressed sequence tags, representing an estimated 7800 unique genes, to determine gene expression levels at 6-hr intervals throughout the day. Eleven percent of the genes, encompassing genes expressed at both high and low levels, showed a diurnal expression pattern. Approximately 2% cycled with a circadian rhythm. By clustering microarray data from 47 additional, unrelated experiments, we identified groups of genes regulated only by the circadian clock. These groups contained the already characterized clock-associated genes LHY, CCA1, and GI, suggesting that other key circadian clock genes might be found within these clusters.
This research has been described more fully in Schaffer R et al.(2001) Plant Cell 13:113-123
Keywords = circadian rhythm
Keywords: other
Contributor(s) Schaffer R, Landgraf J, Accerbi M, Simon V, Larson M, Wisman E
Citation(s) 11158533
Submission date Jul 20, 2001
Last update date Feb 23, 2012
Organization Stanford Microarray Database (SMD)
Phone 650-498-6012
Department Stanford University, School of Medicine
Street address 300 Pasteur Drive
City Stanford
State/province CA
ZIP/Postal code 94305
Country USA
Platforms (1)
Samples (13)
GSM423 circadian rhythm time at 18,0 biological
GSM424 circadian rhythm time at 0,6 biological
GSM425 circadian rhythm time at 0,12 single
BioProject PRJNA84937

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary data files not provided

| NLM | NIH | GEO Help | Disclaimer | Accessibility |
NCBI Home NCBI Search NCBI SiteMap