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E-MEXP-3397

ABSTRACT: Transcription profiling of DEX-inducible SNRK3.15 Arabidopsis seedlings in the presence of ABA

PROVIDER: E-MEXP-3397 | ExpressionAtlas | 2014-07-11

REPOSITORIES: ExpressionAtlas

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			Action	DRS
	E-MEXP-3397-analysis-methods.tsv	Tabular
	E-MEXP-3397-atlasExperimentSummary.Rdata	Rdata
	E-MEXP-3397-configuration.xml	Xml
	E-MEXP-3397-percentile-ranks.tsv	Tabular
	E-MEXP-3397.condensed-sdrf.tsv	Tabular

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Transcriptional profiling of DEX-inducible SNRK3.15 seedlings in the presence of ABA

Project description:Transcriptional profiling of a DEX-inducible SNRK3.15 seedlings in the presence of ABA.

2012-03-01 | E-MEXP-3397 | biostudies-arrayexpress

Identification of target genes of ABI3 [Agilent 44k]

Project description:ABI3 is a key regulator of seed development in Arabidopsis and other plants.To identify genes regulated by ABI3 we performed array based transcriptome analysis of Dexamethasone inducible ABI3 transgenic seedlings. ABI3 mostly in concert with abscisic acid (ABA) was found to activate genes specifically expressed during the maturation phase of seed development. Two weeks old wildtype and 35S::ABI3::GR seedlings were treated with ABA, Dexamethasone (DEX) and ABA plus Dexamethasone for 4 h. Two biological independent experiments were performed. Wildtype was induced to control for DEX-induction of genes.

2012-05-31 | E-GEOD-33951 | biostudies-arrayexpress

A novel NAC transcription factor cooperates with bZIP-type transcription factors in dehydration and osmotic stress responses

Project description:Multiple transcription factors (TFs) play essential roles in plants under abiotic stress, one of the most challenging conditions of plant survival. However, how these multiple TFs cooperate in abiotic stress responses still remains largely unknown. In this study, we provide evidence that a novel NAC (NAM, ATAF1/2, and CUC2) transcription factor (ANAC096) cooperates with bZIP-type TFs [ABRE-binding factor/ABRE-binding protein (ABF/AREB)] in ensuring survival under dehydration and osmotic stress conditions. Intriguingly, ANAC096 directly interacted with ABF2 and ABF4, but not with ABF3, both in vitro and in vivo. ANAC096 and ABF2 synergistically activated RD29A transcription. The genome-wide gene expression analysis revealed that a major proportion of ABA-responsive genes are under the transcriptional regulation of ANAC096.An Arabidopsis mutant, anac096, was hyposensitive to exogenous abscisic acid (ABA), and showed impaired ABA-induced stomatal closure and increased water loss under dehydration stress conditions. Furthermore, the anac096 abf2 abf4 triple mutant was much more sensitive to dehydration and osmotic stresses than the anac096 single mutant or the abf2 abf4 double-mutant. Based on these results, we propose that ANAC096 is involved in a synergistic relationship with a subset of ABFs for the transcriptional activation of ABA-inducible genes in response to dehydration and osmotic stresses. pTA plants (12-day-old) cultured in liquid medium were treated with 30 uM Dex alone for 1 h (Control) or 30 uM Dex alone for 30 min followed by an additional treatment of 30 min with both 30 uM Dex and 2 uM ABA (ABA). For pTA-ANAC096 plants, 12-day-old seedlings were treated with 30 uM Dex for 1 h (ANAC096) or with 30 uM Dex only for 0.5 h followed by additional 0.5 h incubation with both 2 uM ABA and 30 uM Dex (ANAC096+ABA). Total RNAs were isolated from two biological replicates at each condition and used to measure gene expression level.

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LEC1::GR induction: Establishing the network of seed gene expression and analysis of its biodiversity

Project description:lec1::gr induction - Identification of LEC1 target genes - Induction of 14 days old LEC1::GR seedlings , different treatments (EtOH, DEX, DEX+ABA, induction) for 8 hours

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Transcriptional profiles between mp mutant seedlings and transgenics carrying the dexamethasone-inducible GR-bdl protein

Project description:In order to identify targets of the transcription factor AUXIN RESPONSE FACTOR5 / MONOPTEROS (ARF5/MP), we compared transcriptomes of mp-B4149 mutant seedlings (9 day-old) and seedlings carrying the dexamethasone-inducible version of the MP inhibitor protein BODENLOS (GR-bdl). Without dexamethasone (DEX) treatment, this line is identical to the wild-type, while DEX treatment leads to strong inhibition of ARF-dependent transcription. To remove all endogenous MP-inhibiting Aux/IAA proteins, we treated mp or GR-bdl seedlings during 1 hour with auxin (50 micromolar Indole-3-Acetic Acid), either with or without a pretreatment with 10 micromolar DEX for 1 hour. Genes that are activated by MP are expected to br downregulated in mp seedlings and in the GR-bdl line afer DEX treatment. We used biological duplicates for each of the three treatments. Keywords: Transcriptional profiling of transcription factor targets

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Project description:Liquid grown, seven day old wild type Arabidopsis seedlings and seedlings carrying a cDNA encoding the ABA INSENSITIVE GROWTH 1 (ABIG1) gene under the control of an estrogen inducible promoter were treated with estrogen for 0, 60 and 120 minutes at which point seedlings were flash frozen and mRNA was extracted.

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Project description:Transgenic Arabidopsis seedlings RV86-5 (contains a dexamethasone-inducible ubiquitin variant that contains Arg instead of Lys at position 48; ̈Schlögelhofer et al., 2005) were surface-sterilized and sown on Uhelon 120T (Silk & Progress, Czech Republic) mesh placed on 1% (w/v) agar containing a half-strength Murashige and Skoog medium (pH 5.7), stratified at 4 °C for 3 d, and cultivated at 21 °C/19 °C day/night temperatures, with a 16 h photoperiod (90 μmol m−2 s−1 light intensity) for 14 d. On the fourteenth day (after the first 2 h of the day period), the Uhelon mesh with the seedlings was transferred onto a new solid medium supplemented with (i) 5×10−4% (v/v) DMSO (mock); (ii) 0.7 or 7.0 μM dexamethasone (DEX) and rinsed with DMSO or DEX-supplemented water for mock and DEX-treated seedlings, respectively, and incubated for 24 hours.

2022-05-04 | PXD012815 | Pride

Transcriptome analysis of genes regulated by INDEHISCENT (IND) transcription factor under the control of the 35S promoter after treatment with auxin

Project description:IND is a regulator of fruit development in Arabidopsis thaliana. To identify genes regulated by IND we performed array based transcriptome analysis of Dexamethasone (DEX) inducible IND transgenic seedlings. One week old 35S::IND:GR seedlings were treated with DMSO, Auxin, DEX and Auxin plus DEX for 6 h. Three biological independent experiments were performed.

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Transcription Factor-Mediated Control of Anthocyanin Biosynthesis in Vegetative Tissues of Tomato

Project description:DEX inducible expression system for Rosea1 and Delila transcription factors was introduced in tomato. Seedlings and callus tissues were induced by DEX. RNA of induced and uniniduced roots and calli was isolated after 3 and 24h.

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Project description:In Arabidopsis thaliana, cytokinin responsive B-type ARR transcription factors and HD-ZIP III transcription factors such as REVOLUTA (REV), act cooperatively as master regulators of shoot regeneration. To identify the downstream targets of ARR-HD-ZIP III transcriptional complex, we used an inducible line of REV, 35S::FLAG-GR-rREV, in which FLAG-tagged miR165/6-non-targetable form of REV (rREV)-GR fusion protein was expressed from 35S promoter. DEX treatment induced activation of REV by translocation of FLAG-GR-rREV fusion protein from cytoplasm to the nucleus. We treated 35S::FLAG-GR-rREV seedlings with 6-benzylaminopurine (6-BA, a cytokinin), dexamethasone (DEX), or 6-BA+DEX for 2 hours. Total RNAs were extracted and subjected to Agilent Arabidopsis Gene Expression Microarray analyses. The differentially expressed genes (>1.5-fold, p<0.05) were identified.

2014-01-29 | GSE54469 | GEO

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