GEO DataSets

(Submitter supplied) This study focuses on responses of the host plant to infection and transformation with Agrobacterium tumefaciens. Genome wide changes in gene expression were integrated with the alterations in metabolite levels six days after inoculation of agrobacteria. Plants were infected with the virulent strain C58, harboring a T-DNA, or with strain GV3101, containing a disarmed Ti-plasmid. This allows discrimination between signals which derive from the bacterial pathogen and the T-DNA encoded genes.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

9 Samples

Download data: CEL

(Submitter supplied) The intention of these gene expression analysis was to study host responses to an infection with Agrobacterium tumefaciens at different stages of crown gall development. Therefore the transcriptome of infected inflorescence stalk tissue and mature crown galls of Arabidopsis thaliana (WS-2) was determined of three different time points. These were compared with the transcriptome of mock-infected inflorescence stalk tissue (reference) of the same age. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

32 Samples

Download data: CEL

(Submitter supplied) This study focuses on responses of the host plant to infection with Agrobacterium tumefaciens. Genome wide changes in gene expression were integrated with the alterations in metabolite levels three hours after inoculation of agrobacteria. Plants were infected with the virulent strain C58, harboring a T-DNA, or with strain GV3101, containing a disarmed Ti-plasmid. This allows discrimination between signals which derive from the bacterial pathogen and the T-DNA encoded genes.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

15 Samples

Download data: CEL

(Submitter supplied) This study describes physiological changes, morphological adaptations and the regulation of pathogen defense responses in Arabidopsis crown galls. Crown gall development was induced on intact plants under most natural conditions with Agrobacterium tumefaciens. Differential gene expression and the metabolite pattern was determined by comparing crown galls with mock-inoculated inflorescence stalk segments of the same age.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

8 Samples

Download data: CEL

(Submitter supplied) To reveal the underlying molecular mechanism of GH3.5 action in modulating the SA and auxin pathways, we performed transcriptional profiling of gh3.5-1D plants after infection with or without Pst DC3000(avrRpt2) on a global scale using the Affymetrix Arabidopsis ATH1 GeneChip Keywords: Pathogen-response

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

12 Samples

Download data: CEL

(Submitter supplied) Here, we sought to describe qualitative and quantitative changes in the global gene expression profiles of susceptible Arabidopsis plants supporting the development of G. cichoracearum haustoria. We analyzed the features of compatibility at this infection stage, and further evaluated the contribution of the SA- and JA/ET-dependent defense signaling pathways in the pathogen-induced responses by comparing responses in infected wild-type, npr1-1, and jar1-1 plants. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platforms:

GPL7487 GPL7488

24 Samples

Download data

(Submitter supplied) au08-05_p25ind - comparison between constitutive and inducible p25 plants - Are there some genes deregulated by the p25 viral protein. - Comparison between constitutive and inducible p25 plants. Keywords: gene knock in (transgenic)

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL4346

20 Samples

Download data: GPR

(Submitter supplied) Phytophthora cinnamomi Rands (Pc) is a hemibiotrophic oomycete and the causal agent of Phytophthora root rot (PRR) of the commercially important fruit crop avocado (Persea americana Mill.). Plant defense against pathogens is modulated by phytohormone signaling pathways such as salicylic acid (SA), jasmonic acid (JA), ethylene (ET), auxin and abscisic acid. The role of specific signaling pathways induced and regulated during hemibiotroph-plant interactions has been widely debated. more...

Organism:

Persea americana

Type:

Expression profiling by array

Platform:

GPL21856

39 Samples

Download data: GPR

(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 defense responses to biotic stresses are complex biological processes, all governed by sophisticated molecular regulations. Induced systemic resistance (ISR) is one of these defense mechanisms where beneficial bacteria or fungi prime plants to resist pathogen or pest attacks. In ISR the defense arsenal in plants remains dormant and it is only triggered by the infection, allowing a rapid response and a better allocation of plant resources. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

18 Samples

Download data: CEL, XLSX

(Submitter supplied) Purpose: The goals of this study is to compare the reponse of Agrobacterium tumefaciens C58 in the presence and absence of the two opines nopaline and agrocinopine (more precisely agrocinopine A) to delineated the key-genes associated to opines-response in A. tumefaciens C58.

Organism:

Agrobacterium tumefaciens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL24197

6 Samples

Download data: TXT

(Submitter supplied) Heterosis, or hybrid vigor, has been exploited in agriculture to deliver increases in crop yields for over a century, yet the molecular basis is not well understood We have studied the transcriptomes of 15 day old seedlings from intraspecific Arabidopsis hybrids with varying levels of heterosis and their parental lines in order to identify drivers of heterosis. The patterns of altered gene expression in the hybrids point to a reduction in basal defense levels that could reflect the antagonism between plant immunity and plant growth. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing

Platform:

GPL13222

34 Samples

Download data: TXT

(Submitter supplied) Integration of the bacterial T-DNA into the plant genome by virulent agrobacteria causes crown gall development on many plant species. Plant tumor development shares fundamental similarities with mammalian cancer progression despite obvious differences in initiation of tumor development. For neoplastic growth in mammals, DNA methylation changes are known to be essential. The role of epigenetic modifications for plant tumor development is addressed here. more...

Organism:

Arabidopsis thaliana

Type:

Methylation profiling by genome tiling array

Platform:

GPL10977

6 Samples

Download data: BED, BEDGRAPH, CEL

(Submitter supplied) rs11-03_agro transcriptomic comparison of tumoric tissues induced by different c58 agrobacterium lines What are the functions and the regulatory pathways of the bacterial quorum-sensing system in the context of Agrobacterium/Arabidopsis interactions?

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL9553

42 Samples

Download data: GPR

(Submitter supplied) Effect of chitin on rre-1 and rre-2 seedlings. Keywords: other

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL198

24 Samples

Download data: CEL, CHP, EXP

(Submitter supplied) Macrophomina phaseolina (Mp) is a soil-borne pathogenic fungus known to infect more than 500 plants species including important crops. Here we report the use of a novel agar plate-based pathosystem using the model plant Arabidopsis thaliana (Arabidopsis) to study plant defense reponses to Mp, specifically a comparison between wild type Col-0 and double mutant ein2/jar1 roots with and without Mp infection, at two time points, by RNA-seq.

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing

Platform:

GPL19580

16 Samples

Download data: TXT

(Submitter supplied) Agrobacterium tumefaciens is a special plant pathogen causing crown gall disease. This pathogen is well known for the technology Agrobacterium-mediated transformation. As a pathogen, Agrobacterium triggers plant immunity, and this affects transformation. But the signaling components and pathways in plant immunity to Agrobacterium remain elusive. We demonstrate two Arabidopsis MAPKKs MKK4/MKK5 and their downstream MAPKs MPK3/MPK6 play a major role in both Agrobacterium-triggered immunity and Agrobacterium-mediated transformation. more...

Organism:

Arabidopsis thaliana

Type:

Expression profiling by high throughput sequencing

Platform:

GPL21785

12 Samples

Download data: GTF, XLSX

(Submitter supplied) Transcriptional profiling of Arabidopsis transgenic plants overexpresing PpDof5, a transcription factor of Pinus pinaster. Plants were grown with nitrate or ammonium as unique source of nitrogen

Organism:

Arabidopsis thaliana

Type:

Expression profiling by array

Platform:

GPL9020

8 Samples

Download data: GPR

(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) Seed germination is a critical developmental process in plant propagation. Knowledge of the gene expression patterns in this critical process is important in order to understand the main biochemical reactions involved in successful germination, specially for economically relevant plants such as Maize. The purpose of this study is the gene expression analysis of quiescent and germinated maize embryonic axes to determine the regulatory mechanism for (r)-protein expression during the maize development process.

Organism:

Zea mays

Type:

Expression profiling by array

Platform:

GPL4032

14 Samples

Download data: CEL