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Accession IconGSE17159

Gene expression in pif1pif3pif4pif5 mutant under dark or red light conditions

Organism Icon Arabidopsis thaliana
Sample Icon 29 Downloadable Samples
Technology Badge Icon Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)

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Description
Light initiates the seedling deetiolation transition by promoting major changes in gene expression mainly regulated by phytochrome (phy) photoreceptors. During the initial dark-to-light transition, phy photoactivation induces rapid changes in gene expression that eventually lead to the photomorphogenic development. Recent reports indicate that this process is achieved by phy-induced degradation of Phy-Interacting bHLH transcription Factors (PIFs) PIF1, PIF3 PIF4 and PIF5, which are partly redundant constitutive repressors of photomorphogenesis that accumulate in darkness. In order to test whether light/phy-regulated gene expression occurs through these PIFs, we have performed whole-genome expression analysis in the pif1pif3pif4pif5 quadruple mutant (pifq).
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