Dgpp-2 DGPP-regulated genes: Identification of diacylglycerol pyrophosphate-regulated genes in ABA signaling
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ABSTRACT:
ORGANISM(S): Arabidopsis thaliana
PROVIDER: GSE12938 | GEO | 2008/09/27
SECONDARY ACCESSION(S): PRJNA110863
REPOSITORIES: GEO
Similar Datasets
Project description:rs05-06_dgpp - dgpp - The specific plant phosphorylated form of phosphatidic acid (PA), diacyglycerol pyrophosphate (DGPP) was recently shown to be a second messenger in abscisic acid (ABA) signaling. The aim of the project is to identify among the set of ABA-regulated genes the ones also regulated by DGPP and/or PA. - Five ml of 3 days-old suspension cells was incubated with ABA or lipids for 3 h under the conditions of culture. Lipids were emulsified by sonication for 1 mi, four times, at 4°C, in one ml of culture medium then added to 4 ml suspension cells. Cells were filtrated under vacuum, frozen in liquid nitrogen and RNA extracted. Dioleoyl PA and dioctanoyl PA are from Sigma, dioleoyl DGPP and dioctanoyl DGPP are from Avanti Polar Lipids. Keywords: treated vs untreated comparison 5 dye-swap - CATMA arrays
2010-05-19 | E-GEOD-13019 | biostudies-arrayexpress
Project description:rs05-06_dgpp - dgpp - 2. The specific plant phosphorylated form of phosphatidic acid (PA), diacyglycerol pyrophosphate (DGPP), was recently shown to be a second messenger in abscisic acid (ABA) signaling. The aim of the project is to identify among the set of ABA-regulated genes the ones also regulated by DGPP and/or PA. 4 dye-swap - CATMA arrays 5ml of 3 days-old suspension cells were incubated with ABA or DGPP 18:1 for 3hours under the conditions of culture. DGPP was emulsified by sonication for 1min 4 times at 4°C in 1ml of culture medium then added to 4ml of suspension cells. Cells were filtrated under vacuum, frozen in liquid nitrogen and RNA extracted. DGPP is from Avanti Polar Lipids.
2010-05-19 | E-GEOD-12938 | biostudies-arrayexpress
Project description:rs05-06_dgpp - dgpp - The specific plant phosphorylated form of phosphatidic acid (PA), diacyglycerol pyrophosphate (DGPP) was recently shown to be a second messenger in abscisic acid (ABA) signaling. The aim of the project is to identify among the set of ABA-regulated genes the ones also regulated by DGPP and/or PA. - Five ml of 3 days-old suspension cells was incubated with ABA or lipids for 3 h under the conditions of culture. Lipids were emulsified by sonication for 1 mi, four times, at 4°C, in one ml of culture medium then added to 4 ml suspension cells. Cells were filtrated under vacuum, frozen in liquid nitrogen and RNA extracted. Dioleoyl PA and dioctanoyl PA are from Sigma, dioleoyl DGPP and dioctanoyl DGPP are from Avanti Polar Lipids. Keywords: treated vs untreated comparison
2008-10-08 | GSE13019 | GEO
Project description:Identification of diacylglycerol pyrophosphate regulated genes in ABA signaling.<br><br> The specific plant phosphorylated form of phosphatidic acid (PA), diacylglycerol pyrophosphate (DGPP) was recently shown to be a second messenger in abscisic acid (ABA) signaling. The aim of the project is to identify among the set of ABA-regulated genes the ones also regulated by DGPP and/or PA.<br> Five ml of 3 days-old suspension cells was incubated with ABA or lipids for 3 h under the conditions of culture. Lipids were emulsified by sonication for 1 mi, four times, at 4°C, in one ml of culture medium then added to 4 ml suspension cells. Cells were filtrated under vacuum, frozen in liquid nitrogen and RNA extracted. Dioleoyl PA and dioctanoyl PA are from Sigma, dioleoyl DGPP and dioctanoyl DGPP are from Avanti Polar Lipids.
2006-11-22 | E-MEXP-473 | biostudies-arrayexpress
Project description:phosphatidic acid in gene expression-Phosphatidic acid in gene expression
| PRJNA151927 | ENA
Project description:Diacylglycerol pyrophosphate (DGPP) is an anionic phospholipid formed in plants, yeast, and parasites under multiple stress stimuli. It is synthesized by the phosphorylation action of phosphatidic acid (PA) kinase on phosphatidic acid, a signaling lipid with multifunctional properties. PA functions in the membrane through the interaction of its negatively charged phosphomonoester headgroup with positively charged proteins and ions. DGPP, like PA, can interact electrostatically via the electrostatic-hydrogen bond switch mechanism but differs from PA in its overall charge and shape. The formation of DGPP from PA alters the physicochemical properties as well as the structural dynamics of the membrane. This potentially impacts the molecular and ionic binding of cationic proteins and ions with the DGPP enriched membrane. However, the results of these important interactions in the stress response and in DGPP's overall intracellular function is unknown. Here, using 31P MAS NMR, we analyze the effect of the interaction of low DGPP concentrations in model membranes with the peptides KALP23 and WALP23, which are flanked by positively charged Lysine and neutral Tryptophan residues, respectively. Our results show a significant effect of KALP23 on the charge of DGPP as compared to WALP23. There was, however, no significant effect on the charge of the phosphomonoester of DGPP due to the interaction with positively charged lipids, dioleoyl trimethylammonium propane (DOTAP) and dioleoyl ethyl-phosphatidylcholine (EtPC). Divalent calcium and magnesium cations induce deprotonation of the DGPP headgroup but showed no noticeable differences on DGPP's charge. Our results lead to a novel model for DGPP-protein interaction.
| S-EPMC8774204 | biostudies-literature
Project description:Abiotic stress and more specifically drought is the major limiting factor for sunflower production. ABA is a key hormone for drought stress response in plants and sunflower. This experiment aims at identifying ABA responsive pathways in order to better understand sunflower responses to drought. We studied in parallel microRNA profiles on the same samples and we will try to identify sunflower microRNA regulated genes in response to ABA. The ultimate goal will be improve sunflower breeding through selection of key drought response genes.-The experiment consisted of 3 repeats of four 12-day-old-plantlets of sunflower genotype SF193 (INRA code: XRQ) grown in growth chamber conditions and submitted to a 6-hour-treatment of 10 µM absissic acid or not. Growth conditions were 14h light at 23°C and 10h night at 20°C under fluorescent bulbs. Plants were grown in 6 hydroponic boxes containing 20 litres of aerated liquid culture medium (as described in Massonneau et al., 2001 Planta). Leaves (not cotyledons) 1 to 4 were harvested 4 hours after light onset and frozen immediately in liquid nitrogen.
2012-12-09 | GSE22519 | GEO
Project description:Abiotic stress and more specifically drought is the major limiting factor for sunflower production. ABA is a key hormone for drought stress response in plants and sunflower. This experiment aims at identifying ABA responsive pathways in order to better understand sunflower responses to drought. We studied in parallel microRNA profiles on the same samples and we will try to identify sunflower microRNA regulated genes in response to ABA. The ultimate goal will be improve sunflower breeding through selection of key drought response genes.-The experiment consisted of 3 repeats of four 12-day-old-plantlets of sunflower genotype SF193 (INRA code: XRQ) grown in growth chamber conditions and submitted to a 6-hour-treatment of 10 µM absissic acid or not. Growth conditions were 14h light at 23°C and 10h night at 20°C under fluorescent bulbs. Plants were grown in 6 hydroponic boxes containing 20 litres of aerated liquid culture medium (as described in Massonneau et al., 2001 Planta). Leaves (not cotyledons) 1 to 4 were harvested 4 hours after light onset and frozen immediately in liquid nitrogen. 6 arrays - SUNFLOWER; treated vs untreated comparison
2012-12-09 | E-GEOD-22519 | biostudies-arrayexpress
Project description:Background and aim: Diacylglycerol kinase (DGK) isoforms catalyze an enzymatic reaction that removes diacylglycerol (DAG) and thereby terminates protein kinase C (PKC) signaling by converting DAG to phosphatidic acid (PA). We have reported that downregulation of DGKδ (type II isozyme) causes peripheral insulin resistance, metabolic inflexibility, and obesity. Our aim was to determine whether overexpression of DGKδ protects against the development of metabolic impairments and obesity. Methods: We generated a transgenic mouse model overexpressing the human DGKδ2 isoform under the myosin light change promoter (DGKδ TG). We performed deep metabolic phenotyping of DGKδ TG and wild-type mice fed chow or high-fat diet. Mice were also given free access to running wheels to examine the effects of DGKδ overexpression on exercise-induced metabolic outcomes. Results: DGKδ TG mice were leaner than wild-type littermates, with improved glucose tolerance, increased glycogen storage in skeletal muscle, and enhanced glucose uptake in white adipose tissue. Moreover, DGKδ TG mice were protected against high fat diet (HFD)-induced glucose intolerance and obesity. DGKδ TG mice had reduced epididymal fat pad weight, and enhanced lipolysis. Strikingly, DGKδ overexpression recapitulates the beneficial effects exercise on metabolic outcomes. DGKδ overexpression and exercise have a synergistic effect on body weight reduction. Microarray analysis of skeletal muscle confirmed an overlap between genes associated with exercise and DGKδ overexpression. Gene ontology signatures of exercise and DGKδ overexpression were related to lipid storage, extracellular matrix, and glycogen biosynthesis pathways. Conclusion: We identify a role for DGKδ in glucose and energy homeostasis. Overexpression of DGKδ induces adaptive changes in both skeletal muscle and adipose tissue, resulting in protection against high fat diet-induced obesity. DGKδ overexpression recapitulates exercise-induced adaptations on energy homeostasis and skeletal muscle gene expression profiles.
2024-06-14 | GSE255247 | GEO
Project description:This RNA-Seq analysis compares gene expression of the Inositol pyrophosphate phosphatase mutant aps1∆ and Inositol pyrophsophate kinase mutant asp1-D333A contrasting to the WT in the fission yeast S. pombe
2019-06-16 | GSE131237 | GEO