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Arabidopsis thaliana seedlings:early light regulated gene expression in Ler wildtype versus eid3 mutant

ABSTRACT: Transcriptional profiling of Arabidopsis thaliana Ler wildtype and eid3 (empfindlicher im dunkelroten Licht 3) mutant seedlings in darkness and 45 min after a red-light pulse.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE33856 | GEO | 2012/01/01

SECONDARY ACCESSION(S): PRJNA148165

REPOSITORIES: GEO

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Arabidopsis thaliana seedlings:early light regulated gene expression in Ler wildtype versus eid3 mutant

Project description:Transcriptional profiling of Arabidopsis thaliana Ler wildtype and eid3 (empfindlicher im dunkelroten Licht 3) mutant seedlings in darkness and 45 min after a red-light pulse. Arabidopsis thaliana Ler wildtype and eid3 mutant seedlings were grown on 1/2 MS Agar plates covered with filter paper for 4 days in darkness after induction of germination with 2 h red light. Samples were either treated with 2 min red light (30 µmol/m2s) or kept in darkness and harvested after additional 45 min in darkness. 3 biological replicas were used for each of the 4 experimental conditions.

2012-01-01 | E-GEOD-33856 | biostudies-arrayexpress

Transcriptional response of Arabidopsis seedlings to light

Project description:We report the transcriptomic response of Arabidopsis thaliana seedlings grown in continuous white light, darkness or darkness and 1 hour of red light

2022-03-09 | GSE181167 | GEO

Changs in Histone 3 Lysine 9 Acetylation (H3K9ac) in Arabidopsis seedlings in response to light

Project description:We report the changes in H3K9ac in Arabidopsis thaliana seedlings grown in continuous white light, darkness or darkness and 1 hour of red light

2022-03-09 | GSE181432 | GEO

Gene expression in pif1pif3pif4pif5 mutant under dark or red light conditions

Project 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). Wild-type and pifq mutant seeds were plated on GM medium without sucrose at room temperature. During this procedure the seeds were routinely exposed to white light (WL) for a total of 1.5 hours after imbibition. Seeds were then stratified for 5 days at 4ºC in darkness, induced to germinate with a 5-min red pulse (Rp) (46 μmol/m2/s) and then incubated in the dark for 3h at 21°C before exposure to a terminal 5-min far red pulse (FRp) (58 μmol/m2/s) to suppress pseudo-dark effects. Seeds were then placed in either dark (D) or constant red light (Rc) (6.7 μmol/ m2/s) at 21°C for 45h (2d-old seedlings). Alternatively, 2d-old dark-grown seedlings were treated with 1h of red light (R1) (7.5 μmol/m2/s). Seed samples were harvested after stratification (5d stratified seeds).

2009-10-31 | E-GEOD-17159 | biostudies-arrayexpress

Transcriptional characterization of Arabidopsis thaliana seeds treated with a red- or far red-light pulse

Project description:The goal of this study was to compare the transcriptional profile (RNA-seq) of imbibed Arabidopsis thaliana Columbia-0 ecotype seeds that were treated with a 20 min red or far red pulse. The red-light pulse induces germination.

2019-07-10 | GSE134019 | GEO

small RNA-seq of Ler. WT and Ler; 35S-HA-RICE1 D52A transgenic plant

Project description:We examined global miRNA profiles of 3-weeks old 35S-HA-RICE1 D52A transgeneic plants compared to Ler wild-type using illumina sequencing. We conclude that, in general, both miRNA and miRNA* expression levels are downregulated in catalytically-defective RICE1 transgenic plants compared to Ler wild type.

2017-05-02 | GSE96951 | GEO

Expression profiles of dark or red-light treated WT and phytochrome mutants

Project description:The mRNA expression profiles of the wild type, phyB and phyAB mutants were analyzed with darkness or 1 hour red light treatment. Results provide insight into the role of red-light and phytochromes in gene expression.

2019-08-21 | GSE118824 | GEO

Characterization of differential gene expression profiles between wild-type Ler and proatcape1 mutant seedlings upon salt stress.

Project description:To gain insight into how AtCAPE1 regulates salt response, we investigated the gene expression profiles of wild-type (Ler) and proatcape1 mutant seedlings in the presence and absence of 125 mM NaCl by microarray analysis.

2015-07-01 | GSE66946 | GEO

Ler regulation in EPEC

Project description:Transcriptional profiling of wt and ler- EPEC and O157 E. coli strains at mid log and early stationary growth phases

2013-03-31 | GSE38876 | GEO

Expression data of Arabidopsis thaliana (Ler accession) phytochrome phyABCDE quintuple mutant and phyABDE quadruple mutant in response to red light, and their comparison to WT expression data

Project description:Phytochromes are red/far-red light photoreceptors. We sought to test at the transcriptomic level if Arabidopsis mutants lacking all phytochromes (from phyA to phyE), or just retaining trace levels of phyC, had transcriptional response to red light exposure. phyABCDE and phyABDE mutants were grown for 4 days in darkness (D), or under continuous red light at 50 µmol m-2 s-1 (R50), or in darkness followed by 2 hr of red light exposure on day 4 (DR2h). Differentially expressed genes of the mutants in response to red light were compared to those of wild type obtained previously {Hu et al. (2009) Molecular Plant, 2: 166-182}. Three biological replicates were employed for dark and Rc-grown samples, and 2 biological replicates for DR2h samples, thus 8 samples were used for each mutant genotype. It needs to be pointed out that 5 of the 6 WT samples (from WT-D-2 to WT-R50-2) had previously been deposited with GEO accessions GSM226267, GSM226268, GSM226269, GSM226278 and GSM226279. Their cRNA samples were synthesized and labeled with the Affymetrix GeneChip® Expression Analysis kits (One-cycle target labeling and control reagents). They are included in this series of study for convenient comparison, with newly assigned accessions from GSM784837 to GSM784841. The more recent GeneChip 3' IVT Express Kit (Affymetrix) was used to synthesize and label aRNA for one new WT sample (WT-D-1)(GSM784836) and all mutant samples.

2012-03-31 | E-GEOD-31587 | biostudies-arrayexpress

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