GEO DataSets

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) 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

(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) The pathogen Agrobacterium tumefaciens infects a broad range of plants, introducing the T-DNA into their genome. Contrary to all known bacterial phyto-pathogens, Agrobacterium lacks the hypersensitive response-inducing HRP genes although it introduces numerous proteins into the plant cell through a type IV secretion system. To understand the timing and extent of the plant transcriptional response to this unusual pathogen, we used an Arabidopsis 26-thousand gene oligonucleotide microarray. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Dataset:

GDS1692

Platform:

GPL1911

32 Samples

Download data

Analysis of LER cells up to 48 hours after infection with oncogenic Agrobacterium tumefaciens (A.t.). Unlike all known bacterial phytopathogens, broadly-infectious A.t. lacks the hypersensitive response-inducing HRP genes. Results identify the host transcriptional response to this unusual pathogen.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array, log2 ratio, 2 infection, 4 time sets

Platform:

GPL1911

Series:

GSE4116

32 Samples

Download data

(Submitter supplied) Testing the consequences of the absence of the chromatin-associated HMGB1 protein on the transcriptome in Arabidopsis. Keywords: Comparison of mutant and wildtype samples.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL6177

1 Sample

Download data: TXT

(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) d-serine is naturally present throughout the human body. It is also used as add-on therapy for treatment-refractory schizophrenia. d-Serine interacts with the strychnine-insensitive glycine binding site of NMDA receptor, and this interaction could lead to potentially toxic activity (i.e., excitotoxicity) in brain tissue. The transcriptomic changes that occur in the brain after d-serine exposure have not been fully explored. more...

Organism:

Rattus norvegicus

Type:

Expression profiling by array

Dataset:

GDS3643

Platform:

GPL1355

24 Samples

Download data: CEL

Analysis of forebrains of animals treated with up to 500 mg/kg D-serine for 96 hours. D-serine is involved in many physiological processes through its interaction with the glycine binding site of the NMDA receptor. Results provide insight into the impact of D-serine exposure on neuronal functions.

Organism:

Rattus norvegicus

Type:

Expression profiling by array, count, 2 agent, 6 dose sets

Platform:

GPL1355

Series:

GSE10748

24 Samples

Download data: CEL

(Submitter supplied) Phloem-feeding pests cause extensive crop damage throughout the world yet little is understood about how plants perceive and defend themselves from these threats. The silverleaf whitefly (SLWF; Bemisia tabaci type B) is a good model for studying phloem-feeding insect-plant interactions as SLWF nymphs cause little wounding and have a long, continuous interaction with the plant. Using the Arabidopsis ATH1 GeneChip, the global responses to Silverleaf Whitefly 2nd instar feeding were examined. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

4 Samples

Download data: CEL

(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) Environmentally induced changes in the epigenome help individuals to quickly adapt to fluctuations in the conditions of their habitats. Here we explored those changes in Arabidopsis thaliana plants subjected to multiple biotic and abiotic stresses, and identified transposable element (TE) activation in plants infested with the green peach aphid, Myzus persicae. We performed a genome-wide analysis of DNA methylation, mRNA expression, mRNA degradation and small RNAs accumulation. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing; Non-coding RNA profiling by high throughput sequencing; Other; Methylation profiling by high throughput sequencing

Platforms:

GPL17639 GPL26208

14 Samples

Download data: BEDGRAPH, BIGWIG, 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 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