GEO DataSets

(Submitter supplied) Arabidopsis thaliana plants were infested i) with sucking insect herbivores (the generalist aphid Myzus persicae and the specialist aphid Brevicoryne brassicae), ii) with chewing insect herbivores (generalist caterpillars of Spodoptera exigua and specialist caterpillars of Pieris rapae) or iii) were treated by wounding. For each treatment, rosette leaves were harvested at two time points (6h and 24h) after removal of insects. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6531

59 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) 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) 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) Myzus persicae (green peach aphid) feeding on Arabidopsis thaliana induces a defense response, quantified as reduced aphid progeny production, in infested leaves but not in other parts of the plant. Similarly, infiltration of aphid saliva into Arabidopsis leaves causes only a local increase in aphid resistance. Further characterization of the defense-eliciting salivary components indicates that Arabidopsis recognizes a proteinaceous elicitor with a size between 3 to 10 kD. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

6 Samples

Download data: CEL, 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) The aim of this study is to identify Arabidopsis genes whose expression is altered by aphid feeding. An understanding of the plant aphid interaction at the level of the plant transcriptome will 1) consolidate current areas of investigation focused on the phloem composition (the aphid diet), 2) open up areas of plant aphid interactions for ourselves and other workers, 3) Contribute to understanding the use of new molecular technologies in an environmental context and 4) contribute to existing and development of novel control strategies.Our Arabidopsis/Myzus persicae system provides a valuable model for the study because of: a) the advantages of using Arabidopsis, b) The ability to use clonal insects, c) phloem feeding aphids facilitate focus on a specific cell type, d) aphid stylectomy allows collection of pure phloem sap to monitor ‘phloem phenotype’ of the plant and the insect diet, e) we have techniques to monitor the reproductive performance and feeding behaviour aphids.Our strategy has been to test the function of selected genes, particularly those regulating phloem composition (the feeding site of the aphid) based on current phloem models of phloem function. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS2523

Platform:

GPL198

6 Samples

Download data: CEL

Analysis of rosette leaves subjected to aphid infestation. To date, little is known about how plants perceive and defend themselves from phloem-feeding aphids. Results provide insight into the molecular basis of phloem-feeding insect-plant interactions and the development of control strategies.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, count, 2 stress sets

Platform:

GPL198

Series:

GSE6823

6 Samples

Download data: CEL

(Submitter supplied) While pathogen-induced immunity is comparatively well characterized, far less is known about plant defense responses to arthropod herbivores. To date, most molecular-genetic studies of plant-arthropod interactions have focused on insects. However, plant-feeding (phytophagous) mites are also pests of diverse plants, and mites induce different patterns of damage to plant tissues than do well-studied insects (e.g., Lepidopteran larvae or aphids). more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL16112

28 Samples

Download data: CEL

(Submitter supplied) Our goal was to investigate the transcriptional response of T. urticae to different Arabidopsis plants with varying levels of indole glucosinolates.

Organism:

Tetranychus urticae

Type:

Expression profiling by array

Platform:

GPL16890

12 Samples

Download data: TXT