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Time series study of ABA-treated Arabidopsis thaliana rosettes [Illumina TruSeq mRNA Stranded Sample Prep Kit]

ABSTRACT: The hormone abscisic acid (ABA) regulates many plant stress responses and plant development by activating a complex gene regulatory network. This time series experiment was designed to unravel the architecture and dynamics of the ABA gene regulatory network.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE267648 | GEO | 2024/06/24

REPOSITORIES: GEO

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Time series study of ABA-treated Arabidopsis thaliana rosettes [Illumina TruSeq mRNA Sample Prep Kit]

Project description:The hormone abscisic acid (ABA) regulates many plant stress responses and plant development by activating a complex gene regulatory network. This time series experiment was designed to unravel the architecture and dynamics of the ABA gene regulatory network.

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Transcriptional profiling by array of Arabidopsis ABA auxotroph to identify early downstream targets of transcription in response to a small dose of abscisic acid (ABA)

Project description:Abscisic acid (ABA) is a plant hormone that is important in responding to various environmental stresses. Using an ABA auxotroph in Arabidopsis (aba2-2) as the plant material, we would like to identify early downstream targets of transcription in response to a small dose of ABA, 1 uM. We also added cycloheximide to preferentially obtain immediate targets of ABA addition. We believe that using a sensitized background of an ABA auxotroph would yield a set of genes that are very closely regulated by ABA at the transcriptional level. This data set will be used for network analysis of ABA signaling.

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Expression data of T87 Arabidopsis cultured cells in the presence of ABA, SA, JA, ABA+SA, or ABA+JA for 3hr or 24hr

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2011-12-01 | GSE28600 | GEO

Expression data of T87 Arabidopsis cultured cells in the presence of ABA, SA, JA, ABA+SA, or ABA+JA for 3hr or 24hr

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Reciprocal regulation of the TOR kinase and ABA receptor balances plant growth and stress response

Project description:We found that TOR kinase regulates the plant environmental stress responses through phosphorylation at a conserved serine residue of Abscisic acid receptor PYR1/PYLs/RCARs. The phosphorylation inhibits the function of PYLs and prevents the binding of PYLs to abscisic acid and its downstream substrates of PP2C, which blocks the ABA and stress signaling. Our results suggest that plant utilizes this mechanism as a hub to regulate the ABA-mediate stress responses and growth recovery

2017-12-01 | PXD003746 | Pride

dgpp-2 DGPP-regulated genes: Identification of diacylglycerol pyrophosphate-regulated genes in ABA signaling

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.

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Transcriptome analysis of Arabidopsis thaliana G protein subunit mutants in response to abscisic acid (ABA)

Project description:Heterotrimeric G proteins mediate crucial and diverse signaling pathways in eukaryotes. To gain insights into the regulatory modes of the G protein and the co-regulatory modes of the G protein and the stress hormone abscisic acid (ABA), we generated and analyzed gene expression in G protein subunit single and double mutants of the model plant Arabidopsis thaliana. Through a Boolean modeling approach, our analysis reveals novel modes of heterotrimeric G protein action. Keywords: transcriptome analysis; G protein subunit mutants; abscisic acid (ABA)

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AELs suppress ABA signaling and responses by phosphorylating and destabilizing ABA receptors PYR/PYLs

Project description:Unveiling the signal transduction of phytohormone abscisic acid (ABA) will be greatly helpful to improve plant responses to stressful environment. ABA signaling is perceived and mediated by multi-member receptor PYR/PYLs, while whose post-translational modification, especially phosphorylation, is largely unknown. Here we demonstrated that Arabidopsis EL1-like (AEL), a casein kinase that regulates various physiological processes, phosphorylates PYR/PYLs and stimulates whose ubiquitination and degradation, leading to the suppressed ABA responses. Arabidopsis ael triple mutants display hypersensitive responses to ABA treatment, which is consistent with the suppressed degradation of PYR/PYL proteins. PYR/PYLs are phosphorylated in vivo and mutation of the conserved AEL-phosphorylation sites results in the reduced phosphorylation, ubiquitination, and degradation of PYR/PYLs, and hence the enhanced ABA responses. Our studies demonstrate the crucial roles of AEL-mediated phosphorylation in regulating the stability and function of PYR/PYLs and provide informative clues for elucidating the functional mechanism of ABA through regulating PYR/PYL receptors.

2022-02-23 | PXD008565 | Pride

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