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Accession IconGSE19271

Identification of circadian transcripts that are co-regulated with [Ca2+]cyt

Organism Icon Arabidopsis thaliana
Sample Icon 70 Downloadable Samples
Technology Badge Icon Affymetrix Arabidopsis ATH1 Genome Array (ath1121501)

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Description
Our aim is to identify circadian transcripts that are co-regulated with [Ca2+]cyt, with the eventual goal of identifying genetic regulators and targets for circadian oscillations of [Ca2+]cyt. We have identified two conditions in which [Ca2+]cyt behaves differently to other circadian outputs. 1. Treatment of plants with nicotinamide, a metabolic inhibitor of ADPR cyclase, abolishes the circadian oscillations of [Ca 2+]cyt. However, leaf movement, CCA1, LHY, TOC1 and CAB transcript abundance and CAB promoter activity are all rhythmic albeit with a longer period (Dodd et al., 2007). 2. The toc1-1 mutant, which shortens the circadian period of all other rhythms tested, has no effect on the period of [Ca2+]cyt oscillations (Xu et al., 2007). We will measure the circadian regulation of transcript abundance in wild type (C24), toc1-1 and nicotinamide (C24)-treated plants.
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