GEO DataSets

(Submitter supplied) To investigate the response of Arabidopsis thaliana plants to non-freezing, cool temperatures, we subjected four week old plants to various chilling temperatures at defined times during the diurnal cycle to control for diurnal effects on transcription. From the same plants, metabolites and enzyme activities were measured as well. Interestingly a gradual change could be observed over a wide range of temperatures. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

24 Samples

Download data: CEL

(Submitter supplied) Time course of Arabidopsis seedlings treated with 6-Benzyl adenine dissolved in diluted KOH for 15 min or 2 hours Keywords: other

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

13 Samples

Download data

(Submitter supplied) Selenate is chemically similar to sulfate and can be taken up and assimilated by plants via the same transporters and enzymes. In contrast to many other organisms, selenium (Se) has not been shown to be essential for higher plants. In excess, Se is toxic and restricts development. Both Se deficiency and toxicity pose problems worldwide. To obtain better insight into the effects of Se on plant metabolism and into plant mechanisms involved in Se tolerance, the transcriptome of Arabidopsis plants grown with or without selenate was studied, and Se-responsive genes identified. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Datasets:

GDS3225 GDS3243

Platform:

GPL198

8 Samples

Download data: CEL

Analysis of shoots from 10-day-old plants grown with selenate, the major form of bioavailable selenium (Se) in soil. Plants have the capacity to attenuate the toxic effects of Se. Results provide insight into molecular mechanisms underlying Se-stress responses and Se tolerance mechanisms in plants.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 agent sets

Platform:

GPL198

Series:

GSE9311

4 Samples

Download data: CEL

Analysis of roots from 10-day-old plants grown with selenate, the major form of bioavailable selenium (Se) in soil. Plants have the capacity to attenuate the toxic effects of Se. Results provide insight into molecular mechanisms underlying Se-stress responses and Se tolerance mechanisms in plants.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 agent sets

Platform:

GPL198

Series:

GSE9311

4 Samples

Download data: CEL

(Submitter supplied) The purpose of this experiment was to identify genes responding differently to a 24 h low red to far red ratio (R:FR) treatment in plants grown at 16 and 22 degrees Keywords: Light treatment

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

4 Samples

Download data: CEL

(Submitter supplied) Does the ko of NIN7 leads to a differential expression in comparison to the wildtype and is this dependent on the nitrogen regime? Can we repeat the results from the first experiment, and is there a difference between the two alleles? - Plants were harvested during the first 3 hours of light after 42 growth on 0.2mM and 6mM nitrate in hydroponic condition (short day, 170 uE). 42 DAYS of growth Keywords: gene knock out

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL4346

16 Samples

Download data: GPR

(Submitter supplied) The Atss3 mutant and WT plants were arranged according to a Randomized Complete Block Design. The plants were planted in rows with seven rows in each flat; two plants of the same genotype/pot. Plants were grown under a SD photoperiod (8 h light/16 h dark) in a growth chamber as described. Eight randomly selected rows were harvested for each time point from different flats. Plant material was harvested at five time points in the diurnal cycle (1, 4, 8.5, 12, and 16 h; Time 0 is the beginning of the light period); harvesting was conducted under a green safety light. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

20 Samples

Download data: CEL, CHP

(Submitter supplied) To understand the gene network that controls plant tolerance to cold stress, we carried out a near full genome transcript expression profiling in Arabidopsis using Affymetrix GeneChips that contain approximately 24,000 genes. For microarray analysis, Arabidopsis seedlings were cold treated at 0 C for 0 h, 3 h, 6 h, and 24 h. A total of 939 genes were statistically determined to be cold-regulated with 655 being up-regulated and 284 down-regulated. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS1502

Platform:

GPL198

16 Samples

Download data: CEL, EXP

Analysis of inducer of CBF expression 1 (ICE1) mutant seedlings exposed to 0 C for up to 24 hours. Transcription factor ICE1 is required for chilling/freezing tolerance. Results identify a major role for ICE1 in controlling the expression of many cold-responsive genes during cold stress.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 genotype/variation, 2 protocol, 4 time sets

Platform:

GPL198

Series:

GSE3326

16 Samples

Download data: CEL, EXP

(Submitter supplied) Trancript profiling in arabidopsis gdh mutant. Identification of the function and regulation of the GDH enzyme in plants. Comparison of transcriptome in leaves, stems and roots in wild type versus triple GDH (1, 2, 3)-defficient mutant and in wild type versus GDH3- defficient mutant. Keywords: wt vs mutant comparison

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6403

24 Samples

Download data: GPR

(Submitter supplied) The fermentable carbohydrate composition of wort and the manner in which it is utilised by yeast during brewery fermentation has a direct influence on fermentation efficiency and quality of the finished product. In this study the response of a brewing yeast strain to changes in wort fermentable carbohydrate concentration and composition during full-scale (3275 hL) brewery fermentation was investigated by measuring transcriptome changes with the aid of oligonucleotide based DNA arrays. more...

Organism:

Schizosaccharomyces pombe; Saccharomyces cerevisiae

Type:

Expression profiling by array

Platform:

GPL2529

14 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) In this study, we used GC-MS analysis in combination with flux analysis and the Affymetrix ATH1 GeneChip to survey the metabolome and transcriptome of Arabidopsis leaves in response to manipulation of the thiol-disulfide status. Feeding low concentrations of the sulfhydryl reagent dithiothreitol (DTT) for one hour at the end of the dark period led to post-translational redox-activation of ADP-glucose pyrophosphorylase and major alterations in leaf carbon partitioning, including an increased flux into major respiratory pathways, starch- cell-wall-, and amino-acid synthesis and a reduced flux to sucrose. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS2363

Platform:

GPL198

4 Samples

Download data

Analysis of leaves treated with dithiothreitol (DTT) for 1 hour. DTT is a sulfhydryl reagent that serves as a nonphysiological redox donor and substrate for thioredoxins. Results provide insight into the contribution of changes in transcripts levels to the regulation of metabolism by thioredoxin.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 agent sets

Platform:

GPL198

Series:

GSE4021

4 Samples

Download data

(Submitter supplied) Usually starch is nearly depleted at the end of the night. To induce a gradual depletion of carbon, we have analysed the global response of transcripts during an extension of the night, where carbon becomes severely limiting from about four hours onwards. Keywords: time course

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

14 Samples

Download data: CEL