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Expression data from Arabidopsis plants misexpressing AtMYB30 after Xanthomonas inoculation at early timepoints

ABSTRACT: Plant immune responses to pathogen attack involve various defense mechanisms and among them, the Hypersensitive Response (HR), a form of programmed cell death occurring at invasion sites. AtMYB30, a transcription factor acts as a positive regulator of a cell death pathway conditioning the HR. We show by microarray analyses of Arabidopsis plants misexpressing AtMYB30 that the genes encoding the four enzymes forming the acyl-coA elongase complex, responsible for very long chain fatty acids (VLCFA) biosynthesis, are putative targets. Keywords: Time course after inoculation with a Xanthomonas strain, Xcc147, in Arabidopsis wild-type plants and transgenic plants (AtMYB30 overexpressor (ox) and antisense (as) lines

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE9674 | GEO | 2008/02/29

SECONDARY ACCESSION(S): PRJNA103561

REPOSITORIES: GEO

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Transcription profiling of Arabidopsis plants mis-expressing AtMYB30 AFTER Xanthomonas inoculation AT early timepoints

Project description:Plant immune responses to pathogen attack involve various defense mechanisms and among them, the Hypersensitive Response (HR), a form of programmed cell death occurring at invasion sites. AtMYB30, a transcription factor acts as a positive regulator of a cell death pathway conditioning the HR. We show by microarray analyses of Arabidopsis plants misexpressing AtMYB30 that the genes encoding the four enzymes forming the acyl-coA elongase complex, responsible for very long chain fatty acids (VLCFA) biosynthesis, are putative targets. Experiment Overall Design: 18 samples are analyzed : Leaves of 4 week-old plants syringe-infiltrated with the Xcc147 strain (or not) were harvested. In experiment 1, we selected 4 timepoints : T0 (not inoculated), 90-105 min, 2-4 h and 6 h post inoculation in the wild-type line, and in a transgenic line overexpressing AtMYB30. Experiment 2 is a biological replicate of experiment 1 (except for 6 hpi). In experiment 3, we focused on the early timepoint 90-105 min to compare the wild-type line and an AtMYB30 antisense line. Experiment 4 is a biological replicate of experiment 3. Plant material was pooled when necessary, and frozen before RNA extraction and hybridization on Affymetrix ATH1 microarrays. As a screen for candidate target genes, we looked for genes, i) up-regulated in the wild-type line after inoculation with Xcc147 as compared to time T0 (not inoculated) , ii) over-expressed in the AtMYB30 overexpressor line compared to the wild-type, and iii) down-regulated in the AtMYB30 antisense line compared to the wild-type.

2008-04-07 | E-GEOD-9674 | biostudies-arrayexpress

Arabidopsis thaliana

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Project description:T2 progenies of two transgenic lines overexpressing ERF transcription factor WIN1 were grown on soil in parallel under identical conditions. mRNA was extracted from pooled leaves from multiple plants of each line for the microarray experiement. Plants derived from two lines were used in this experiment: line 13, a "medium" overexpressor, and line 22, a strong overexpressor. Control mRNA was obtained from pooled control plants transformed using an empty binary vector. All plants were first selected on medium containing kanamycin before being transferred to soil. Keywords = wax epidermis transcription factor Arabidopsis Keywords: parallel sample

2004-02-28 | GSE1071 | GEO

Genome-wide analysis of TOC1-ox transcriptional networks

Project description:To gain insights into the mechanisms of TOC1 function in the Arabidopsis circadian clock we performed transcriptional profiling of Wild-Type (WT) and and TOC1 overexpressor plants (TOC1-ox).

2009-09-09 | GSE18007 | GEO

Transcriptional profiling of arabidopsis plants

Project description:au13-08_atpplaii-alpha - transcriptional profilling of arabidopsis plants. Understanding the physiological role of pPLAIIα; under control and drought stress conditions. Study on empty vector, overexpressor and antisense A. thaliana lines.

2016-06-01 | GSE58219 | GEO

Transcription profiling of GA5/DREB1A double-overexpressing Arabidopsis lines.

Project description:To improve both drought stress tolerance and growth of plants, we generated transgenic Arabidopsis plants that overexpress DREB1A and GA5. It was reported that DREB1A improves drought stress tolerance in various crops but causes dwarfism, and GA5 encodes a GA synthetic enzyme which enhances plant growth. We performed microarray experiments using a single overexpressor of GA5 and the double overexpressor of DREB1A and GA5 to study the potential interactions of the gene networks regulated by the two factors in the double overexpressor.

2020-02-29 | E-MTAB-6550 | biostudies-arrayexpress

Transcription profiling of PIF4/DREB1A double-overexpressing Arabidopsis lines.

Project description:To improve both drought stress tolerance and growth of plants, we generated transgenic Arabidopsis plants that overexpress two transcription factors: DREB1A and PIF4. It was reported that DREB1A improves drought stress tolerance in various crops but causes dwarfism, and PIF4 enhances cell elongation through activation of cell wall synthesis. We performed microarray experiments using a single overexpressor of PIF4 and the double overexpressor of DREB1A and PIF4 to study the potential interactions of the gene networks regulated by the two transcription factors in the double overexpressor.

2019-01-07 | E-MTAB-6549 | biostudies-arrayexpress

Transcriptome analysis of Arabidopsis VIRE2-INTERACTING PROTEIN2 Overexpressor in Agrobacterium-mediated plant transformation and abiotic stresses

Project description:VIP2 is a transcription regulator and the C-terminal NOT2 domain of VIP2 interacts with VirE2. However, AtVIP2 overexpressor lines in Arabidopsis did not show an improvement in Agrobacterium-mediated stable root transformation. To investigate the role of VIP2 in Agrobacterium-plant interaction, we carried out transcriptome profiling by comparing a homozygous Arabidopsis AtVIP2 overexpressor line with wild-type Col-0 plants following Agrobacterium infection.

2019-09-26 | E-MTAB-8326 | biostudies-arrayexpress

Transcription profiling of OsPIL1/DREB1A double-overexpressing Arabidopsis lines.

Project description:To improve both drought stress tolerance and growth of plants, we generated transgenic Arabidopsis plants that overexpress two transcription factors: DREB1A and OsPIL1. It was reported that DREB1A improves drought stress tolerance in various crops but causes dwarfism, and OsPIL1 enhances cell elongation through activation of cell wall synthesis in rice. We performed microarray experiments using a single overexpressor of OsPIL1 and the double overexpressor of DREB1A and OsPIL1 to study the potential interactions of the gene networks regulated by the two transcription factors in the double overexpressor.

2016-12-06 | E-MTAB-4073 | biostudies-arrayexpress

Gene expression in leaf blades of the rice Os-LBD37 overexpressor line RK16331-13

Project description:The 5th and 6th leaf blades of the rice Os-LBD37 overexpressor line RK16331-13 and the empty vector control line FOX3 were examined. LBD37 belongs to the plant- specific LOB- (Lateral Organ Boundary) domain family proteins first characterized in Arabidopsis. Results point towards an involvement of the rice LBD37 (OsLBD37) ortholog of Arabidopsis in nitrogen metabolism- and senescence- related processes. Hygromycin- resistant rice Os-LBD37 overexpressor and empty vector control plants were grown in hydroponic culture system. The sampling date of the leaf blades of RK16331-13 LBD37 overexpressor plants and the empty vector control was determined according to the emergence of the 8th leaf blade. Three independent hybridizations were performed for line RK16331-13 and the empty vector control line.

2009-12-27 | E-GEOD-14647 | biostudies-arrayexpress

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