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LHP1 and INO80 cooperate with ethylene signaling for warm ambient temperature response by activating specific bivalent genes

ABSTRACT: LHP1 and INO80 cooperate with ethylene signaling for warm ambient temperature response by activating specific bivalent genes

PROVIDER: PRJNA1079711 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR28067141_1.fastq.gz	Fastqsanger.gz
	SRR28067141_2.fastq.gz	Fastqsanger.gz
	SRR28067142_1.fastq.gz	Fastqsanger.gz
	SRR28067142_2.fastq.gz	Fastqsanger.gz
	SRR28067143_1.fastq.gz	Fastqsanger.gz

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LHP1 and INO80 cooperate with ethylene signaling for warm ambient temperature response by activating specific bivalent genes

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The Arabidopsis chromodomain-containing LHP1 colocalizes with histone H3 lysine27 trimethylation

Project description:The POLYCOMB proteins are required for maintenance of silent chromatin states mediated by H3K27 trimethylation in animals, but POLYCOMB homologues are not found in plant genomes. Using DamID-chip, we found that the Arabidopsis chromodomain-containing protein LHP1 localizes to chromatin associated with H3K27me3 genome-wide. Furthermore, the LHP1 chromodomain binds H3K27me3 with high affinity. These results suggest that LHP1 shares similar functions with POLYCOMB. Keywords: DamID-Chip

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Knockdown of Ino80 complex subunits Actr5, Ies6, and Ino80 in RD cells

Project description:INO80 complex is an ATPase-dependent chormatin remodeling complex, which regulates various DNA metabolic processes such as DNA replication and repair. Additionally, INO80 complex also contributes to the regulation of gene expression in sterss response and development. In order to investigate the function of INO80 complex in rhabdomyosarcoma, we examined the knockdown of subunits of INO80 complex Actr5, Ies6, and Ino80 in human rhabdomyosarcoma RD cells. As a result, it was found that INO80 complex is involved in the sarcomagenicity and the disregulation of myogenic properties of rhabdomyosarcoma cells.

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The Arabidopsis GAGA-binding factor BPC6 recruits PRC1 component LHP1 to GAGA DNA-motifs

Project description:Plant BBR/BPC transcription factors contain the conserved Basic-Pentacystein (BPC) DNA-binding domain. Arabidopsis group II BBR/BPC proteins interact with PRC1 component LHP1 in vivo. Microarray experiments with Arabidopsis bpc4 bpc6, lhp1-4 and lhp1-4 bpc4 bpc6 suggest an importance of this interaction in the concerted repression of homeotic genes. In this study, we used the ATH1 GeneChip microarray to investigate transcript abundance in different Arabidopsis thaliana genotypes.

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The INO80 chromatin remodeling complex promotes thermomorphogenesis by connecting H2A.Z eviction and active transcription in Arabidopsis[ChIP-seq]

Project description:Global warming imposes a major threat to plant growth and crop production. In some plants including Arabidopsis thaliana, elevated temperatures induce a series of morphological and developmental adjustments, termed thermomorphogenesis to facilitate plant cooling under high-temperature conditions. Plant thermal response is suppressed by histone variant H2A.Z. At warm temperatures, H2A.Z is evicted from nucleosomes at thermo-responsive genes, resulting in their activation. However, the mechanisms that regulate H2A.Z eviction and subsequent transcription activation are largely unknown. Here, we show that the ino80 chromatin-remodeling complex (ino80-C) promotes thermomorphogenesis and activates the expression of thermo-responsive and auxin-related genes. ino80-C associates with PHYTOCHROME-INTERACTING FACTOR 4 (PIF4), a potent regulator in thermomorphogenesis, and mediates temperature-induced H2A.Z eviction at PIF4 targets. Moreover, ino80-C directly interacts with COMPASS-like and transcription elongation factors to promote active histone modification Histone H3 lysine 4 trimethylation (H3K4me3) and RNA Polymerase II (RNA Pol II) elongation, leading to the thermal induction of transcription. Notably, transcription elongation factors are required for the eviction of H2A.Z at PIF4 targets, suggesting the cooperation of ino80-C and transcription elongation in H2A.Z removal. Our results demonstrate that the (PIF4)-(ino80-C)-(COMPASS-like)-(transcription elongator) module controls plant thermal response, and establish a link between H2A.Z eviction and active transcription.

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