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Genome-wide profiling of trimethylated histone H3 lysine 27 (H3K27me3) in wide-type, brm, clf, and brm clf mutant seedlings

ABSTRACT: By using ChIP-seq, we found that loss of BRM activity in developing seedlings leads to ectopic and increased H3K27me3 deposition at several hundred genes, indicating the critical role of BRM in preventing the inappropriate deposition of this histone mark. Removal of CLF in brm mutant could partcially suppress the increased H3K27me3.

ORGANISM(S): Arabidopsis thaliana

PROVIDER: GSE53620 | GEO | 2015/03/09

SECONDARY ACCESSION(S): PRJNA232493

REPOSITORIES: GEO

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Genome-wide profiling of trimethylated histone H3 lysine 27 (H3K27me3) in wide-type, brm, clf, and brm clf mutant seedlings

Project description:By using ChIP-seq, we found that loss of BRM activity in developing seedlings leads to ectopic and increased H3K27me3 deposition at several hundred genes, indicating the critical role of BRM in preventing the inappropriate deposition of this histone mark. Removal of CLF in brm mutant could partcially suppress the increased H3K27me3. Examination of H3K27me3 in 14-day-old wt, brm, clf, and brm clf seedlings. Two biological replicates for each one.

2015-03-09 | E-GEOD-53620 | biostudies-arrayexpress

Expression data from Col, brm-1, clf-29 and brm-1 clf-29 14-d-old seedlings

Project description:To understand how actions of the chromatin-remodeler BRAHMA (BRM) and Polycomb Group (PcG) proteins are coordinated during plant development, we performed a genome-wide profiling of trimethylated histone H3 lysine 27 (H3K27me3) in brm mutant seedlings by chromatin immunoprecipitation followed by next generation sequencing (ChIP-seq). Increased H3K27me3 deposition at several hundred genes was observed in brm mutants and this increase was partially supressed upon removal of the CURLING LEAF (CLF) H3K27me3 methyltransferase. ChIP experiments demonstrated that BRM directly binds to a subset of genes and prevents the inappropriate association of PcG proteins at some of the loci. Together, these results indicate a crucial role of BRM in restricting the inappropriate activity of PcG protein complexes during plant development.

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Genome-wide profiling of trimethylated histone H3 lysine 27 (H3K27me3) in brm mutant seedlings and in wt seedlings

Project description:By using ChIP-seq, we found that loss of BRM activity in developing seedlings leads to ectopic and increased H3K27me3 deposition at several hundred genes, indicating the critical role of BRM in preventing the inappropriate deposition of this histone mark. Unexpectedly, BRM also facilitates PcG function at some PcG targets, suggesting the requirement for BRM in the deposition of this mark at certain PcG target genes. Examination of H3K27me3 in 14-day-old wt and brm seedlings. Two biological replicates for each one.

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Wide-type, brm, clf, and brm clf mutant seedlings

Project description:Wide-type, brm, clf, and brm clf mutant seedlings

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Genome-wide profiling of trimethylated histone H3 lysine 27 (H3K27me3) in brm mutant seedlings and in wt seedlings

Project description:By using ChIP-seq, we found that loss of BRM activity in developing seedlings leads to ectopic and increased H3K27me3 deposition at several hundred genes, indicating the critical role of BRM in preventing the inappropriate deposition of this histone mark. Unexpectedly, BRM also facilitates PcG function at some PcG targets, suggesting the requirement for BRM in the deposition of this mark at certain PcG target genes.

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Genome-wide analysis reveals CLF-regulated transcripts in Arabidopsis

Project description:CURLY LEAF (CLF), the major histone methyltransferase of Polycomb Repressive Complex 2 (PRC2), modifies trimethylation of histone H3 lysine 27 (H3K27me3) and mediates dynamical chromatin repression in Arabidopsis. Here we profiled Arabidopsis transcriptomes obtained from roots, leaves, flowers and siliques of Col-0 and clf-28 plants using RNA-seq. Our analysis uncovered 3835 transcription units were up-regulated in clf-28. Compared with H3K27me3 ChIP-CHIP data, we found at least 42% of them were associated with H3K27me3.

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Wide-type, brm, clf, and brm clf mutant seedlings

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Identification of CLF-regulated transcripts using strand-specific RNA-sequencing in Arabidopsis

Project description:CURLY LEAF (CLF), the major histone methyltransferase of Polycomb Repressive Complex 2 (PRC2), modifies trimethylation of histone H3 lysine 27 (H3K27me3) and mediates dynamical chromatin repression in Arabidopsis. Here we used strand specific RNA-sequencing to profile Arabidopsis transcriptomes obtained from roots, shoots, flowers and siliques of Col-0 and clf-28 plants. Our analysis identified a large number of CLF-regulatedd transcripts in Arabidopsis. Transcriptome profiling in roots, shoots, inflorescences and siliques of WT and clf-28 plants with 3 biological replicates.

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