KANADI1-regulated genes in shade
Ontology highlight
ABSTRACT:
ORGANISM(S): Arabidopsis thaliana
PROVIDER: GSE68684 | GEO | 2015/08/11
SECONDARY ACCESSION(S): PRJNA283396
REPOSITORIES: GEO
Similar Datasets
Project description:RNA-Seq of Arabidopsis thaliana Col-0 and 35S::FLAG-GR-KAN1 plants grown in ambient light or shade. 8 samples (Col-0 wildtype, 35S::FLAG-GR-KAN1 each in shade or ambient light, each with mock or Dexamethasone treatment) with two technical replicates were sequenced.
2015-08-11 | E-GEOD-68684 | biostudies-arrayexpress
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2014-01-29 | GSE54469 | GEO
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. 10-day-old 35S::FLAG-GR-rREV plants were treated with 6-benzylaminopurine (6-BA), dexamethasone (DEX), or 6-BA+DEX for 2 hours. DEX treatment induced activation of REV by translocation of FLAG-GR-rREV fusion protein from cytoplasm to the nucleus. Total RNA was extracted with RNeasy Mini Kit and hybridized to Agilent Arabidopsis Gene Expression Microarray. Differentially expressed genes were defined by a 1.5-fold expression difference with a P value<0.05. Biological replicates were performed.
2014-01-29 | E-GEOD-54469 | biostudies-arrayexpress
Project description:Shade can trigger the shade avoidance syndrome (SAS) in shade-intolerant species,which cause exaggerated growth and affect crop yield.We report that Arabidopsis transcription factors bZIP59 negatively regulate SAS. To investigate the function of bZIP59 during SAS, we performed RNA-Seq of wild type Col-0 and a T-DNA insertion line bzip59 (SALK_024459) in while light and shade.
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Project description:A high-depth strand-specific RNA sequencing (ssRNA-seq) using 5-day-old white-light grown Col-0 and pif7-1 seedlings with additional 1 hr shade or white light treatment.
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Project description:For shade-intolerant species, shade light indicates the close proximity of neighboring plants and triggers the shade avoidance syndrome (SAS), which causes exaggerated growth and reduced crop yield. We report that nonsecreted ROT FOUR LIKE (RTFL)/DEVIL (DVL) peptides negatively regulate the SAS by repressing the activities of BRASSINOSTEROID SIGNALING KINASEs (BSKs) and PHYTOCHROME INTERACTING FACTOR 4 (PIF4) in Arabidopsis. To identify RTFL function during SAS, we performed RNA-seq to search for differentially expressed genes (DEGs) by comparing transcript levels between Col-0 and dvl1-1D, bsk36, or pif47 seedlings during white light and shade conditions.
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Project description:The Arabidopsis thaliana transcription factor LATERAL ORGAN BOUNDARIES (LOB) is expressed in the boundary between the shoot apical meristem and initiating lateral organs. To identify genes regulated by LOB activity, we used an inducible 35S:LOB-GR line. This analysis identified genes that are differentially expressed in response to ectopic LOB activity. 35S:LOB-GR and Col wild-type seedlings were treated with dexamethasone (DEX) or mock-treated. Three biological replicates were conducted for each treatment.
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Project description:For shade-intolerant plants, changes in light quality indicative of competition from neighboring plants trigger shade avoidance syndrome (SAS). PYHTOCHROME-INTERACTING FACTOR 7 is the major transcriptional regulator of SAS in Arabidopsis. However, the epigenetic reprogramming under shade is poorly understood. To identify the histone chaperone ASF1 and HIRA function during SAS, we performed transcriptome deep sequencing (RNA-seq) to search for differentially expressed genes (DEGs) by comparing transcript levels between Col-0 and pif7-1, asf1ab, or hira-1 seedlings during white light and shade conditions. Our data shown that histone chaperone ASF1, through interacting with PIF7 and helping of HIRA, positively regulates shade-induced genes expression.
2023-01-30 | GSE189669 | GEO
Project description:One of the key innovations of the flowering plants is their female reproductive organ, the carpel. Here we show that a mechanism controlling carpel margin development in the model flowering plant Arabidopsis thaliana was recruited from light-regulated processes. This recruitment followed the loss from the basic Helix-Loop-Helix transcription factor SPATULA (SPT) of a domain previously responsible for its negative regulation by phytochrome. We propose that the loss of this domain was a prerequisite for the light-independent expression in female reproductive tissues of a genetic module that also promotes shade avoidance responses in vegetative organs. Striking evidence for this proposition is provided by the restoration of wild type carpel development to spt mutants by low red/far-red light ratios, simulating vegetation shade, which we show to occur via PHYB, PIF4 and PIF5. Our data illustrate the potential of modular evolutionary events to generate rapid morphological change, and thereby provide a molecular basis for neo-Darwinian theories that describe this non-gradualist phenomenon. Furthermore, the effects shown here of light quality perception on carpel development lead us to speculate on the potential role of light-regulated mechanisms in plant organs that, like the carpel, form within the shade of surrounding tissues. The SPATULA (SPT) coding sequence was fused to the 5M-bM-^@M-^Y-extremity of a sequence encoding the 75 C-terminal residues of the viral VP16 transcriptional activator and inserted into the pG0229-35S:GR plant transformation vector between the CaMV-35S promoter and sequences encoding the rat glucocorticoid receptor (GR), so as to conserve the entire reading frame. The resulting plasmid was transferred to Agrobacterium tumefaciens C58/pMP90 cells and used to transform A. thaliana Col-0 plants by standard methods. A homozygous, single-copy transformant was identified, from which two populations of ten T3 descendents were grown and treated by dipping of inflorescences for 2 min in cycloheximide (CHX; 10 M-BM-5g/ml) containing Silwet L-77 surfactant (0.01% v/v). This treatment reduced translation to approximately 5% of its native level in inflorescence tissues, as measured by the in vivo incorporation of [35S]-methionine into proteins. One hour later, inflorescence tissues of the two plant populations were dipped for 2 min in CHX solution, as described above, with and without dexamethasone (DEX; 10 M-BM-5M). After a further 2h, treated inflorescences, excluding open flowers, were harvested and pooled prior to RNA extraction for global gene expression analyses. Microarray analyses were performed using CATMA microarrays each containing 31776 gene-specific tags corresponding to 22089 A. thaliana genes. Three biological replicates were performed, based on three entirely separate induction experiments involving T3 plants from the same T2 parent. A transformed line containing a construction in which SPT had been replaced by an initiation codon and nuclear localization signal (NLS) was used to verify that the targets identified did not respond to the nuclear translocation of VP16-GR protein alone (35S:NLS-VP16-GR plants). In this NLS control experiment, two biological replicates were performed. One technical replicate with fluorochrome reversal was performed for each biological replicate. The labeling of cRNAs with Cy3-dUTP or Cy5-dUTP (Perkin-Elmer-NEN Life Science Products), the hybridization of these cRNAs to microarrays, and the subsequent scanning of microarrays, was performed as described by Lurin et al. (2004) Plant Cell 16, 2089-2103.
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Project description:The goal of this study was to compare the transcriptional profile (RNA-seq) of Arabidopsis thaliana Columbia-0 ecotype seedlings that were treated with two different light (white light or shade) and temperature (20ºC or 28ºC) conditions.
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