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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [RNA-seq 1]

ABSTRACT: We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. To confirm that the temperature and timing used for the heat stress are relevant, we generated RNA-seq data and analyzed changes in gene expression induced by the heat stress treatment.

ORGANISM(S): Solanum lycopersicum

PROVIDER: GSE206362 | GEO | 2023/01/03

REPOSITORIES: GEO

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [DAP-seq]

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [Hi-C]

Project description:We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. To map the three-dimensional chromatin interactions we performed in situ Hi-C, a genome-wide method that detects DNA-DNA physical interactions.

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [HiChIP]

Project description:We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. To validate the presence of transcription factories we performed a HiChIP experiment, which is a sensitive and efficient method to analyze protein-centric chromosome conformation, using an anti-RNA polymerase II antibody.

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [ATAC-seq]

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HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [RNA-seq 2]

Project description:We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. We performed gene expression profiling analysis using data obtained from RNA-seq of 4 weeks old tomato (Solanum lycopersicum cv. Moneymaker background ) plants (wild type and RNAi knock-down lines) which were treated at 45°C for 0h, 1h and 6h.

2023-01-03 | GSE206363 | GEO

HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [Capture Hi-C]

Project description:We investigated the role of HSFA1a, a master regulator of heat stress response, in this reorganization through promotion of the formation of promoter/enhancer chromatin loops. To determine whether distal REs come into contact with promoters, instead of using a classical Hi-C, we further combined Hi-C with a capture enrichment step. We generated a biotinylated RNA bait library specifically targeting 212,735 promoter regions and performed a capture Hi-C after 0h, 1h and 6h after stress.

2023-01-03 | GSE206356 | GEO

HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions [ChIP-seq]

Project description:To investigate the HSFA1a, a master regulator of heat stress response, plays a key role in this reorganization by promoting the formation of promoter/enhancer chromatin loops. To determine if a typical chromatin signature could differentiate distal and proximal REs, we performed ChIP-seq experiments and analyzed the levels of four histone covalent modifications that are permissive for transcription: H3K4me3, H3K9ac, H3K18ac and H3K27ac at 0, 1 and 6 hours after heat stress on both proximal and distal REs specifically active at 1 hour after HS. In addition, To assess if RNAPII could also by recruited at distal active enhancers in plants, we performed an RNAPII ChIP-seq on plant subjected to 0, 1 and 6 hours of heat stress and analyzed its accumulation on distal REs specifically active at 1 hour after HS. Moreover, we did ChIP-seq of H3K27me1 associated constitutive heterochromatin at normal condition.

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Differential regulation of HSFA1s and HSFA2 after heat shock in Arabidopsis

Project description:HSFA1s are a gene family of HSFA1 with four members, HSFA1a, HSFA1b, HSFA1d, and HSFA1e. HSFA1s are the master regulators of heat shock response. As a part of the heat shock response, HSFA2 can prolong the heat shock response and amplify the heat shock response in response to repeat heat shock. To identify the heat-shock-responsive genes differentially regulated by HSFA1s and HSFA2, we compared the transcriptomic differences of plants containing only constitutively expressed HSFA1s or HSFA2 after heat stress. hsfa2 (the KO mutant of HSFA2, Col-0 background) and A2QK-10 (CaMV 35S:HSFA2 in QK mutant; QK is HSFA1a/b/d/e quadruple KO mutant) were used to compare the difference of heat shock response when plants lack HSFA1s or HSFA2. The aim is to find the HSFA1s- and HSFA2-preferred regulating genes after heat stress. As the control samples, wild type is the plant with normal heat shock response, and QK (HSFA1s KO mutant, Col-0 and Ws mixed background) is the plant that lost the heat shock response controlled by HSFA1s.

2013-04-09 | E-GEOD-44655 | biostudies-arrayexpress

HSFA1a controls plant heat stress response through its action on the 3D chromatin reorganization of enhancer-promoter interactions.

Project description:This SuperSeries is composed of the SubSeries listed below.

2023-01-03 | GSE206365 | GEO

Differential regulation of HSFA1s and HSFA2 after heat shock in Arabidopsis

2013-04-09 | GSE44655 | GEO