Transcriptomics,Genomics

Dataset Information

158

Diurnal and Circadian-Regulated Genes in Arabidopsis


ABSTRACT: 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

INSTRUMENT(S): MSU-1

SUBMITTER: Stanford Microarray Database  

PROVIDER: GSE4 | GEO | 2001-07-20

SECONDARY ACCESSION(S): PRJNA84937

REPOSITORIES: GEO

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Microarray analysis of diurnal and circadian-regulated genes in Arabidopsis.

Schaffer R R   Landgraf J J   Accerbi M M   Simon V V   Larson M M   Wisman E E  

The Plant cell 20010101 1


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 exp  ...[more]

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