FT and GT soi and plant
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA611868 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR11285796.fastq.gz | Fastqsanger.gz | |||
| SRR11285797.fastq.gz | Fastqsanger.gz |
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Project description:Flowering of Arabidopsis thaliana is accelerated by several environmental cues, including exposure to long days. The photoperiod-dependent promotion of flowering involves the transcriptional induction of FLOWERING LOCUS T (FT) in the phloem of the leaf. FT encodes a mobile protein that is transported from the leaves to the shoot apical meristem, where it forms part of a regulatory complex that induces flowering. Whether FT also has biological functions in leaves of wild-type plants remains unclear. In order to address this issue, we first studied the leaf transcriptomic changes associated with its over expression in the companion cells of the phloem. To this end, transgenic A. thaliana plants that misexpress FT from the pGAS1 promoter in a ft-10 tsf-1 double mutant background were employed (pGAS1:FT ft-10 tsf-1). In these transgenic plants, the use of the pGAS1 promoter ensures that the FT transgene is expressed in phloem companion cells of the minor veins, recreating the spatial pattern of expression described for the native gene. In this studuy, the transcriptome of leaves of pGAS1:FT ft-10 tsf-1 transgenic plants was compared to that of ft-10 tsf-1 and Col-0 plants using Tiling Arrays.
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Project description:Background: It has been shown previously that administration of Francisella tularensis (Ft) LVS lipopolysaccharide (LPS) protects mice against subsequent challenge with Ft LVS and blunts the pro-inflammatory cytokine response. Methods: To investigate further the molecular mechanisms that underlie Ft LVS LPS-mediated protection, we profiled global hepatic gene expression following Ft LVS LPS or saline pretreatment and subsequent Ft LVS challenge using Affymetrix arrays. Results: A large number of genes (> 3000) were differentially expressed at 48 hours post-infection. The degree of modulation of inflammatory genes by infection was clearly attenuated by LPS-pretreatment in the surviving mice. However, LPS alone had a subtle but significant effect on the gene expression profile of the uninfected mice. By employing gene set enrichment analysis, we discovered significant up-regulation of peroxisome proliferator activated receptors (PPARs) and their target genes in LPS-treated liver. Conclusions: We hypothesize that the LPS-induced blunting of pro-inflammatory response in mouse is, in part, mediated by PPARs (alpha and gamma).
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