# Meltzerlab GEO Microarray Tool - View GSE Details
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ID: 4
Geo Accession: GSE4 (GEO Site)
Title: Diurnal and Circadian-Regulated Genes in Arabidopsis
Platform id: GPL13
Sample id:
Total 13 GSM
Status: Public on Jul 20 2001
Submission date: 2001-07-20
Last update date: 2012-02-23
Pubmed id: 11158533  
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
Type: Expression profiling by array
Contributor: R,,Schaffer; J Landgraf; M Accerbi; V Simon; M Larson; E Wisman
Contact: Name: Stanford Microarray Database; Email: array@genome.stanford.edu; Phone: 650-498-6012; Department: Stanford University, School of Medicine; Institute: Stanford Microarray Database (SMD); Address: 300 Pasteur Drive; City: Stanford; State: CA; Zip/postal_code: 94305; Country: USA; Web_link: http://genome-www5.stanford.ed ..
Ftp sMatrix: GSE4 sMatrix
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