GEO DataSets

(Submitter supplied) Plants have developed a complicated resistance system, and they exhibit various defense patterns in response to different attackers. However, the determine factors of plant defense patterns are still not clear. Here, we hypothesized that damage patterns of plant attackers play an important role in determining the plant defense patterns. To test this hypothesis, we selected leafminer, which has a special feeding pattern more similar to pathogen damage than chewing insects, as our model insect, and Arabidopsis thaliana as the response plants. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

9 Samples

Download data: CEL, CHP

(Submitter supplied) Arabidopsis thaliana plants (ecotype Landsberg erecta) were grown at 20˚C constant temperature, 8 hr/16 hr Light/Dark photoperiod at 50-60% ambient humidity, for 8 to 9 weeks. Short day conditions prevented the onset of flowering and the plants were thus maintained in growth stage 1 (leaf production) with 13 to 15 rosette leaves larger than 1mm (stage 1.13 to 1.14). Diamondback moth (DBM, Plutella xylostella) larvae were maintained on cabbage (Brassica oleracea) plants in a climate-controlled room at 25ºC, 12 hr photoperiod with 50%-60% relative humidity. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6531

16 Samples

Download data: TXT

(Submitter supplied) Plant volatiles can mediate plant-plant communication in the sense that plants attacked by herbivores can signal their unattacked neighbors of danger by emitting HIPVs. We call this the priming effect. Since the plant defense response is a systematic process involving numerous pathways and genes,to characterize the priming process, a time course study using a genome-wide microarray may provide more accurate information about the priming process. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

16 Samples

Download data: CEL, CHP

(Submitter supplied) To investigate the impact of a plant´s response to abiotic stress on plant defense against subsequent biotic stress, we determined the transcriptional response of Arabidopsis thaliana to low temperature stress (4°C) and subsequent mechanical wounding or larval feeding damage by the herbivores Mamestra brassicae (generalist) and Pieris brassicae (specialist). In total, 21%, 4% and 14% of all genes responsive to M. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL19779

30 Samples

Download data: TXT

(Submitter supplied) Plant defenses against pathogens and insects are regulated differentially by cross-communicating signaling pathways in which salicylic acid (SA), jasmonic acid (JA) and ethylene (ET) play key roles. To understand how plants integrate pathogen- and insect-induced signals into specific defense responses, we monitored the dynamics of SA, JA, and ET signaling in Arabidopsis after attack by a set of microbial pathogens and herbivorous insects with different modes of attack. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

14 Samples

Download data: CEL

(Submitter supplied) Plant defence against insects is well known to be affected by previous exposure to cues warning of herbivory. Using Arabidopsis thaliana and the herbivore Pieris brassicae, we addressed the question whether the maintenance of the effects of the warning cue depends on its reliability. We determined the transcriptomes of Arabidopsis leaves that were treated by P. brassicae egg deposition (i) five days after oviposition, (ii) one day after removal of the eggs following the egg treatment, (iii) three days after removal of the eggs, (iv) after two days of herbivory that started one day after removal of the eggs; or that were treated by chilling (v) five days after transfer to 4°C, (vi) one day after transfering the plants to 20°C following the chilling treatment, (vii) three days after transfering the plants to 20°C, (viii) after two days of herbivory that started one day after transfering the plants to 20°C.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL19779

37 Samples

Download data: TXT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6177

12 Samples

Download data: TXT

(Submitter supplied) Transcriptional profiling of Arabidopsis thaliana wild type (WT) comparing mechanical damage (MD) and Myzus persicae feeding (Myz). The differences in the biochemical responses to insect feeding seen when compared to the control sample prompted us to search for less obvious differences between the treatments using gene expression profiling. Biological replicates: 4 biological replicates

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6177

4 Samples

Download data: TXT

(Submitter supplied) Transcriptional profiling of Arabidopsis thaliana wild type (WT) comparing MD (mechanical damage) and HW (herbivore wounding). The differences in the biochemical responses to herbivory seen prompted us to search for less obvious differences between treatments using gene expression profiling. Biological replicates: 4

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6177

4 Samples

Download data: TXT

(Submitter supplied) Transcriptional profiling of Arabidopsis thaliana wild type (WT) comparing Mg chloride infiltration (C) and Pseu infection (Pseu). The differences in the biochemical responses to bacterial infection seen when compared to the control sample prompted us to search for less obvious differences between the treatments using gene expression profiling.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6177

4 Samples

Download data: TXT

(Submitter supplied) Plant reproduction depends on the concerted activation of many genes to assure the correct communication between pollen and pistil. Here we queried the whole transcriptome of Arabidopsis thaliana in order to identify genes with specific reproductive functions. We used the ATH1 whole genome array to profile wild-type unpollinated pistils and unfertilized ovules in comparison with the expression profile of pistils 0.5, 3.5 and 8.0 hours after pollination KEYWORDS: time course

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS3905

Platform:

GPL198

10 Samples

Download data: CEL

Analysis of pistils up to 8.0 hours after pollination. Unfertilized ovules were also examined. An intense pollen-pistil interaction precedes fertilization. Results provide insight into the molecular mechanisms underlying sexual plant reproduction.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 3 protocol, 4 time, 2 tissue sets

Platform:

GPL198

Series:

GSE27281

10 Samples

Download data: CEL

(Submitter supplied) Essential metals such as iron are required for healthy plant growth. Fe is an important cofactor and catalytic element in many biological processes. Fe and other metals can also be toxic when present in excess. Therefore plants have mechanisms of metal homeostasis which involve coordination of metal ion transporters for uptake, translocation and compartmentalisation. The NAS genes are supposed to play an important role in Fe homeostasis. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

24 Samples

Download data: CEL, CHP

(Submitter supplied) Fe deficiency stimulates a coordinated response involving reduction, transport and redistribution of Fe in the roots. The expression of genes regulated by Fe deficiency in the two contrasting Arabidopsis thaliana ecotypes, Tsu-1 and Kas-1, shows that different ecotypes can respond in diverse ways, with different Fe regulated overrepresented categories. We use microarrays to analyze the Fe deficiency responses of contrasting Arabidopsis thaliana ecotypes (Tsu-1 and Kas-1).

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

18 Samples

Download data: CEL

(Submitter supplied) Plants received oviposition by S. exigua (1-2 egg clutches). After 1 day, tissue from the next younger (systemic) leaf, or from the respective leaf position of a control plant without eggs, was harvested for RNA extraction.

Organism:

Nicotiana attenuata

Type:

Expression profiling by array

Platform:

GPL25245

6 Samples

Download data: TXT

(Submitter supplied) ra04-07_pgpr - profiling of the root architecture response to phyllobacterium - Experiment 1 : Which genes are up- or down-regulated in Arabidopsis thaliana cultivated in vitro with increased lateral root development in response to Phyllobacterium STM196 inoculation. Experiment 2 : Which genes are up- or down-regulated during the ISR triggered by a rhizobacteria, in comparison with those affected by a pathogenic interaction. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL5337

4 Samples

Download data: GPR

(Submitter supplied) ra04-07_pgpr - profiling of the pgpr induced systemic resistance (isr) - Experiment 1 : Which genes are up- or down-regulated in Arabidopsis thaliana cultivated in vitro with increased lateral root development in response to Phyllobacterium STM196 inoculation. Experiment 2 : Which genes are up- or down-regulated during the ISR triggered by a rhizobacteria, in comparison with those affected by a pathogenic interaction. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL5337

10 Samples

Download data: GPR

(Submitter supplied) Five members of the Arabidopsis thaliana NF-YA gene family are strongly induced by several stress conditions via transcriptional and miR169-related posttranscriptional mechanisms. These transcription factors participate in gene regulation via two different mechanisms, one depending on binding to the CCAAT-box in the promoter of regulated genes and the other, independent of the CCAAT-box, in which NF-YA prevents the interaction of the NF-YB/YC heterodimer with transcription factors.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL7725

24 Samples

Download data: GPR

(Submitter supplied) Plant responses to abiotic stresses are accompanied by massive changes in transcriptome composition. To provide a comprehensive view of stress-induced changes in the Arabidopsis thaliana transcriptome, we have used whole-genome tiling arrays to analyze the effects of salt, osmotic, cold and heat stress as well as application of the hormone abscisic acid (ABA), an important mediator of stress responses.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by genome tiling array

Platform:

GPL1980

39 Samples

Download data: CEL