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An integrative analysis of different histone acetylation in ethylene response in Arabidopsis

ABSTRACT: We reported that ethylene specifically elevated acetylation of histone H3 at K14 and the non-canonical acetylation of histone H3 at K23,but not H3K9ac.Thus, we further performed Chip-sequencing of H3K9Ac, using chromatins isolated from 3-day old etiolated ein2-5 seedlings treated with ethylene or air gas.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE93875 | GEO | 2017/08/11

SECONDARY ACCESSION(S): PRJNA362641

REPOSITORIES: GEO

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EIN2 mediates histone H3K14 and non-canonical histone H3K23 acetylation in the nucleus in ethylene response [ChIP-seq]

Project description:We report that ethylene specifically elevated acetylation of histone H3 at K14 and the non-canonical acetylation of histone H3 at K23. We perform Chip-sequencing of H3K14Ac, H3K23Ac and H3K9Ac using chromatins isolated from 3-day old etiolated Col-0 seedlings treated with ethylene or air gas. Results show that ethylene specifically elevates H3K14Ac and non-canonical H3K23Ac in EIN3 targeted genes that are regulated at the transcriptional level by ethylene.

2016-10-05 | GSE77394 | GEO

ENAP1 is involved in ethylene response

Project description:We report that ethylene regulate the ENAP1 binding. We perform a dual cross-linking procedure using the additional cross-linker ethylene glycol bis-succinimidylsuccinate (EGS; Thermo Scientific) along with formaldehyde according to (Pedmale et al. 2016) for Chip-sequencing (ChIPseq) of ENAP1, as well as ENAP1 ChIP- EIN2 reChIPseq (ChIP-reChIPseq), which were used chromatins isolated from 3-day old etiolated Col-0 seedlings treated with ethylene or air gas. Results show that ENAP1 is involved in the EIN2 dependent ethylene response.

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ENAP1 is involoved in the Histone H3K23 acetylation- and EIN3- mediated ethylene response

Project description:We report that ethylene reduce the ENAP1 binding. We perform Chip-sequencing of ENAP1 using chromatins isolated from 3-day old etiolated Col-0/ein2/ein3eil1 seedlings treated with ethylene or air gas. Results show that ethylene reduce ENAP1 binding in TSS region of EIN3 targeted genes that are regulated at the transcriptional level by ethylene.

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TREE1-EIN3 mediated transcriptional repression inhibits shoot growth in the response to ethylene in the Histone H3K23 acetylation- and EIN3- mediated ethylene response

Project description:We report that ethylene enhances the TREE1 binding. We perform ChIP-sequencing of TREE1 using chromatins isolated from 3-day old etiolated pTREE1:TREE1-GFP seedlings treated with ethylene or air gas. Results show that ethylene enhances TREE1 binding in ethylene down regulated genes.

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ENAP1 is involoved in the EIN3- mediated ethylene response

Project description:We report that ethylene reduce the ENAP1 binding. We perform Chip-sequencing of ENAP1 using chromatins isolated from 3-day old etiolated ein3eil1 seedlings treated with ethylene or air gas. Results show that ethylene reduce ENAP1 binding in TSS region of EIN3 targeted genes that are regulated at the transcriptional level by ethylene.

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Nuclear Pyruvate Dehydrogenase Complex regulates EIN2-directed Histone Acetylation and Transcriptional Regulation in the Ethylene Response.[ChIP-Seq]

Project description:Next-generation sequencing (NGS) has been used to study the histone acetylation in Arabidopsis etiolated seedlings under air and ethylene treatment. The goal of this study is to investigate how pyruvate dehydrogenase complex is involved in histone acetylation changes in response to ethylene.

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Nuclear Pyruvate Dehydrogenase Complex regulates EIN2-directed Histone Acetylation and Transcriptional Regulation in the Ethylene Response.

Project description:Histone acetylation is important for the transcriptional regulation in the ethylene response and the nuclear metabolic production of acetyl coenzyme A (acetyl-CoA) plays key roles in histone acetylation. But how the nucleus produces acetyl-CoA for histone acetylation and transcription regulation in the ethylene response is completely unknown. Here we show that functional pyruvate dehydrogenase complex (PDC) translocates from the mitochondria to the nucleus in response to ethylene, generating nuclear acetyl CoA from pyruvate to regulate EIN2-directed histone acetylation and transcription in the target genes. It has been reported that the dephosphorylated E1 subunit of the PDC complex is required for the PDC activity, we examined the phosphorylation status change of E1 in the nucleus in response to ethylene. The MS data shows quantitative phosphorylation differences between cytosolic and nuclear fraction supporting the dephosphorylation of E1 upon ethylene treatment.

2024-06-25 | PXD040689 | Pride

Interplay between ethylene, ETP1/ETP2 F-box proteins, and degradation of EIN2 triggers ethylene responses in Arabidopsis

Project description:A complex interplay between ethylene, ETP1/ETP2 F-box proteins, and degradation of EIN2 is essential for triggering ethylene responses in plants. The gaseous plant hormone ethylene can trigger myriad physiological and morphological responses in plants. While many ethylene signaling pathway components have been identified and characterized, little is known about the function of the integral membrane protein EIN2, a central regulator of all ethylene responses. Here, we demonstrate that Arabidopsis thaliana EIN2 is a protein with a short half-life that undergoes rapid proteasome-mediated protein turnover. Moreover, EIN2 protein accumulation is positively regulated by ethylene. We identified two F-box proteins, EIN2 TARGETING PROTEIN and 2 (ETP1 and ETP2), that interact with the EIN2 carboxyl-terminal domain (CEND), which is highly conserved and sufficient to activate most ethylene responses. Overexpression of ETP1 or ETP2 disrupts EIN2 protein accumulation, and these plants manifest a strong ethylene insensitive phenotype. Furthermore, knocking down the levels of both ETP1 and ETP2 mRNAs using an artificial microRNA (amiRNA) leads to accumulation of EIN2 protein, resulting in plants that display constitutive ethylene response phenotypes. Finally, ethylene down-regulates ETP1 and ETP2 proteins, impairing their ability to interact with EIN2. Thus, these studies reveal that a complex interplay between ethylene, the regulation of ETP1/ETP2 F-box proteins, and subsequent targeting and degradation of EIN2 is essential for triggering ethylene responses in plants. Keywords: ethylene treatment, genetic modification

2009-12-01 | GSE14247 | GEO

RNAi profiling of Arabidopsis Col-0 plants (air control), 8 week old Col-0 plants treated for 24 hours with ethylene gas (10 ppm), and artificial microRNA knockdown mutants, amiR-ETP1/2 - interplay between ethylene, ETP1/ETP2 F-box proteins, and degradation of EIN2 triggers ethylene responses in Arabidopsis

2009-12-05 | E-GEOD-14247 | biostudies-arrayexpress

Phosphorylation-Regulated Cleavage of ETHYLENE INSENSITIVE2 Mediates Hormone Signaling from the Endoplasmic Reticulum to the Nucleus

Project description:Ethylene gas is essential for many developmental processes and stress responses in plants. ETHYLENE INSENSITIVE2 (EIN2), an NRAMP-homologous integral membrane protein, plays an essential role in ethylene signaling but its function remains enigmatic. Here we report that phosphorylation-regulated proteolytic processing of EIN2 triggers its endoplasmic reticulum (ER)-nucleus translocation, which is essential for hormone signaling and response in Arabidopsis. Without ethylene, or in hormone receptors mutants, ER-tethered EIN2 shows CTR1 kinase-dependent phosphorylation. Ethylene exposure triggers dephosphorylation and proteolytic cleavage, resulting in rapid nuclear translocation of a carboxyl-terminal EIN2 fragment (C’). Plants containing mutations that mimic EIN2 dephosphorylation, or inactivate CTR1, show constitutive cleavage and nuclear localization of EIN2-C’, and EIN3/EIL1-dependent activation of ethylene responses. These findings uncover a mechanism of subcellular communication whereby ethylene gas stimulates rapid phosphorylation-dependent cleavage and nuclear movement of the EIN2-C’ peptide, thus linking hormone perception and signaling components located in the ER with nuclear-localized transcriptional regulators.

2012-10-22 | E-MTAB-4360 | biostudies-arrayexpress

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