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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Microarray analysis of Atelp2, npr1 and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

ABSTRACT: The goal of the microarray experiment was to determine the induction kinetics of transcriptome changes in the Arabidopsis mutant Atelp2, npr1 and wild type in response to infection of the avirulent bacterial pathogen Pst DC3000/avrRpt2. Results indicated that Atelp2 exhibited slower kinetcis of transcriptional changes than the wild type after Pst DC3000/avrRpt2 infection, whereas npr1 did not show significant alteration in the induction kinetics. Three biological replicates with leaves from 8 plants per sample were collected at 0, 4, 8, and 12 hours after inoculation with the avirulent bacterial pathogen Pst DC3000/avrRpt2. After extraction, RNA concentration was determined on a NanoDrop Spectrophotometer (Thermofisher Scientific, Waltham, MA) and sample quality was assessed using the 2100 Bioanalyzer (Agilent Technologies, Santa Clara, CA). Each replicate was used as one sample for microarray analysis.

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Jin Yao

PROVIDER: E-GEOD-38986 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Microarray analysis of Atelp2, npr1 and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

Project description:The goal of the microarray experiment was to determine the induction kinetics of transcriptome changes in the Arabidopsis mutant Atelp2, npr1 and wild type in response to infection of the avirulent bacterial pathogen Pst DC3000/avrRpt2. Results indicated that Atelp2 exhibited slower kinetcis of transcriptional changes than the wild type after Pst DC3000/avrRpt2 infection, whereas npr1 did not show significant alteration in the induction kinetics.

2012-06-30 | GSE38986 | GEO

Microarray analysis of At-med16-1 and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

Project description:The goal of the microarray experiment was to identify defense genes that were differentially expressed in the Arabidopsis mutant At-med16-1 and wild type in response to infection of the avirulent bacterial pathogen Pst DC3000/avrRpt2. Results indicated that, compared with the wild type, several positive regulators of SAR (systemic acquired resistance) were downregulated and a group of SAR negative regulators were upregulated in At-med16-1. Three biological replicates with leaves from 8 plants per sample were collected at 0, 4, 8, and 24 hours after inoculation with the avirulent bacterial pathogen Pst DC3000/avrRpt2. After extraction, RNA concentration was determined on a NanoDrop Spectrophotometer (Thermofisher Scientific, Waltham, MA) and sample quality was assessed using the 2100 Bioanalyzer (Agilent Technologies, Santa Clara, CA). Equal amount of RNA from the 3 biological replicates were pooled as one sample for microarray analysis.

2012-06-29 | E-GEOD-38999 | biostudies-arrayexpress

Microarray analysis of med14 and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

Project description:The goal of the microarray experiment was to determine the induction kinetics of transcriptome changes and to identify differentially expressed genes in the Arabidopsis mutant med14 and wild type in response to infection of the avirulent bacterial pathogen Pst DC3000/avrRpt2. Results indicated that med14 exhibited slower kinetcis of transcriptional changes than the wild type after Pst DC3000/avrRpt2 infection, and the induction of a large group of defense genes was suppressed in the med14 mutant. Three biological replicates with leaves from 8 plants per sample were collected at 0, 4, 8, and 12 hours after inoculation with the avirulent bacterial pathogen Pst DC3000/avrRpt2. After extraction, RNA concentration was determined on a NanoDrop Spectrophotometer (Thermofisher Scientific, Waltham, MA) and sample quality was assessed using the 2100 Bioanalyzer (Agilent Technologies, Santa Clara, CA). Each replicate was used as one sample for microarray analysis.

2013-05-18 | E-GEOD-45212 | biostudies-arrayexpress

Microarray analysis of med14, med16, npr1, and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

Project description:The goal of the microarray experiment was to identify genes that are differentially expressed among the Arabidopsis mutant med14, med16, npr1, and wild type in response to infection of the avirulent bacterial pathogen Pst DC3000/avrRpt2. Results indicated that the induction of a large group of defense genes was suppressed in the med14 mutant compared with both med16 and the wild type. Three biological replicates with leaves from 8 plants per sample were collected at 0 and 4 hours after inoculation with the avirulent bacterial pathogen Pst DC3000/avrRpt2. After extraction, RNA concentration was determined on a NanoDrop Spectrophotometer (Thermofisher Scientific, Waltham, MA) and sample quality was assessed using the 2100 Bioanalyzer (Agilent Technologies, Santa Clara, CA). Each replicate was used as one sample for microarray analysis.

2013-05-18 | E-GEOD-45214 | biostudies-arrayexpress

Microarray analysis of med14 and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

2013-05-18 | GSE45212 | GEO

Microarray analysis of med14, med16, npr1, and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

2013-05-18 | GSE45214 | GEO

Transcription profiling of Arabidopsis wild type Columbia-0 and mutant gh3.5-1D in response to pathogen Pst DC3000(avrRpt2)

Project description: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 Experiment Overall Design: Each 3 leaves of plants of 5-week-old wild type Columbia-0 and mutant gh3.5-1D (heterozygous) were inoculated with Pst DC3000(avrRpt2)at 105 cfu mL-1. Leaves were harvested at 0 h (uninoculated) and 48 hours after inoculation. Three biological repeats were performed on Columbia-0 (wild-type, Col-0) and gh3.5-1D (mutant) after infection with or without Pst DC3000(avrRpt2), respectively.

2008-06-14 | E-GEOD-6556 | biostudies-arrayexpress

Microarray analysis of At-med16-1 and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

2012-06-30 | GSE38999 | GEO

Arabidopsis thaliana

Project description:Microarray analysis of Atelp2, npr1 and wild type (Col-0) infected with the avirulent bacterial pathogen Pst DC3000/avrRpt2

| PRJNA169569 | ENA

Natural variation in RPS2-mediated resistance: correlating gene-expression profiles to phenotypic responses.

Project description:Natural variation within plant species is an important resource for discovery of genes controlling biological traits. Gene-expression profiling of natural variation is increasingly used to identify genes affecting a trait. Here, we explored variation among Arabidopsis thaliana accessions with respect to defense against Pseudomonas syringae pv. tomato DC3000 (Pst), with a focus on R-gene mediated resistance triggered by the Pst type III effector protein AvrRpt2. We explored variation at two phenotypic levels: growth of the bacteria and hypersensitive response (HR) measured by electrolyte leakage. Considerable variation among accessions was found at both phenotypic levels. The genetic variation among accessions affected both growth of Pst with (Pst avrRpt2) and without (Pst) the AvrRpt2 effector, with some variation being specific for the bacterial strains, and other variation affecting both strains in a similar manner. Variation in HR was not correlated with variation in bacterial growth. Additionally we examine variation in gene-expression profiles after mock- and Pst avrRpt2-inoculated plants, obtained using a dedicated microarray Gene-expression profiling at 6 h post inoculation identified clusters of genes from which expression levels are correlated with bacterial growth and electrolyte leakage. The expression levels of some of these clusters correlate with more than one phenotypic characteristic, such as growth of both Pst and Pst avrRpt2, whereas other clusters were correlated with just one biological parameter. Thus we demonstrate that variation in gene-expression profiles among Arabidopsis accessions is correlated with variation in phenotypic responses. Keywords: Comparisons of Arabidopsis thaliana accessions with respect to inoculation with Pseudomonas syringae pv tomato avrRpt2.

2007-08-09 | GSE8298 | GEO

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