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Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Identification of CLF-regulated transcripts in embryos at the mature-green stage by strand-specific RNA-sequencing in Arabidopsis

ABSTRACT: 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. Our previous results suggested that CLF may play regulatory roles on seed size and lipid biosynthesis in embryos at the mature-green stages. Here we used strand specific RNA-sequencing to profile Arabidopsis transcriptomes obtained from isolated embryos at the mature-green stage of Col-0 and clf-28 plants. Our analysis identified a large number of CLF-regulatedd transcripts in developmenting embryos in Arabidopsis. Issolated embryos of WT and clf-28 with 2 biological replicates

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Jun Liu

PROVIDER: E-GEOD-68080 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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CURLY LEAF Regulates Gene Sets Coordinating Seed Size and Lipid Biosynthesis.

Liu Jun J Deng Shulin S Deng Shulin S Wang Huan H Ye Jian J Wu Hui-Wen HW Sun Hai-Xi HX Chua Nam-Hai NH

Plant physiology 20160304 1

CURLY LEAF (CLF), a histone methyltransferase of Polycomb Repressive Complex 2 (PRC2) for trimethylation of histone H3 Lys 27 (H3K27me3), has been thought as a negative regulator controlling mainly postgermination growth in Arabidopsis (Arabidopsis thaliana). Approximately 14% to 29% of genic regions are decorated by H3K27me3 in the Arabidopsis genome; however, transcriptional repression activities of PRC2 on a majority of these regions remain unclear. Here, by analysis of transcriptome profiles ...[more]

PMID: 26945048

Similar Datasets

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.

2016-03-28 | E-GEOD-61545 | biostudies-arrayexpress

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 (As described under GEO ID: GSE38612) and clf-28 plants using RNA-seq. Our analysis uncovered 3835 transcription units were up-regulated in clf-28. Compared with ChIP-CHIP data, we found at least 42% of them were associated with H3K27me3. Transcriptom profiling in roots, leaves, flowers and siliques of clf-28 plants.

2015-02-01 | E-GEOD-43983 | biostudies-arrayexpress

Identification of CLF-regulated transcripts in embryos at the mature-green stage by 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. Our previous results suggested that CLF may play regulatory roles on seed size and lipid biosynthesis in embryos at the mature-green stages. Here we used strand specific RNA-sequencing to profile Arabidopsis transcriptomes obtained from isolated embryos at the mature-green stage of Col-0 and clf-28 plants. Our analysis identified a large number of CLF-regulatedd transcripts in developmenting embryos in Arabidopsis.

2016-03-28 | GSE68080 | GEO

Transcriptome profiling of siliques at 4 developmental stages in Arabidopsis

Project description:To search for the differential expressed genes during post-fertilization and embryonic development in Arabidopsis, We profiled transcriptome of siliques at 4 developmental stages using RNA-seq based on poly(A) selection. Each RNA library yielded 100 million 101-bp paired-end reads.Using Tophat and Cufflinks with the Arabidopsis TAIR10 annotation as reference, we identified 33,451 assembled transcripts in 4 samples. Of them, 5,608 were up-regulated genes in at least one sample. A group of them are preferentially expressed at mature green-stage of seeds. Transcriptome profiling in 0-5 day, 6-10 day, 11-15 day and 16-20 day post-anthesis siliques

2016-03-28 | E-GEOD-55866 | biostudies-arrayexpress

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.

2015-02-01 | GSE43983 | GEO

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

2016-03-28 | GSE61545 | GEO

Arabidopsis thaliana treatments to trigger somatic embryo formation under RNAseq

Project description:Arabidopsis clf/swn mutant is able to form somatic embryos under the proper treatment conditions. In order to get more information about the process, we compared the expression profiles of wt and clf/swn in absence of treatment, Injury, Auxin, and Auxin+Injury treatments

2017-01-10 | GSE81166 | GEO

Transcriptomics analysis of developing wild type and val1 mutant Arabidopsis embryos

Project description:Developing Arabidopsis seeds accumulate oils and seed storage proteins synthesized by the pathways of primary metabolism. Seed development and metabolism are positively regulated by transcription factors belonging to the LAFL regulatory network. The VAL gene family encodes repressors of the seed maturation program in germinating seeds, although they are also expressed during seed maturation. VAL1 functions as a repressor of seed metabolism, as val1 mutant seeds accumulated elevated levels of storage proteins compared to the wild type. Two VAL1 splice variants were identified through RNA sequencing analysis: a full-length and a truncated form lacking the plant-homeodomain-like domain associated with epigenetic repression. None of the transcripts encoding the core LAFL network transcription factors were affected in val1 embryos. Instead, activation of VAL1 by FUSCA3 appears to result in repression of a subset of seed maturation genes downstream of core LAFL regulators as 39% of transcripts in the FUSCA3 regulon were de-repressed in the val1 mutant. The LEC1 and LEC2 regulons also responded but to a lesser extent. Additional 832 transcripts that were not LAFL targets were de-repressed in val1 mutant embryos. These transcripts are candidate targets of VAL1, acting through epigenetic and/or transcriptional repression. 2 genotypes, 7 time points, 3 biological and 4 technical replicates

2016-02-19 | E-GEOD-74692 | biostudies-arrayexpress

Characterization of stress-responsive lncRNAs in Arabidopsis thaliana

Project description:We sequenced the total RNA from a tissues mixed sample (inflorescences, rosette leaves, cauline leaves and stems) of Arabidopsis thaliana. After total RNA extraction, the same amount of tissue RNA were mixed. Ribosomal RNAs were deleted from the mixed tissue total RNAs using RiboMinus™ Plant Kit repeated three times. We also sequenced 9 poly(A)- RNAs from seedlings treated with different stress conditions at different times. The poly(A)- RNAs were collected by removing poly(A)+ RNAs four times . Then rRNAs were removed from poly(A)- RNAs three times. Sequencing of total RNAs from the mixed tissues sample is taken as an example of collecting novel transcripts from high-throughput data, which could be clarified by noncoding scores derived from our integrative models. Sequencing of nonpolyA RNAs are used for identifing stress-responsive nonpolyA lncRNAs and for validation of predicted lncRNAs.

2014-09-18 | E-GEOD-49325 | biostudies-arrayexpress

Genome-wide occupancy of histone H3K27 methyltransferases CURLY LEAF and SWINGER in Arabidopsis seedlings

Project description:The Polycomb Group (PcG) proteins form two protein complexes, PcG Repressive Complex 1 (PRC1) and PRC2, which are key epigenetic regulators in eukaryotes. PRC2 represses gene expression by catalyzing the trimethylation of histone H3 lysine 27 (H3K27me3). In Arabidopsis (Arabidopsis thaliana), CURLY LEAF (CLF) and SWINGER (SWN) are two major H3K27 methyltransferases and core components of PRC2, playing essential roles in plant growth and development. Despite their importance, genome-wide binding profiles of CLF and SWN have not been determined and compared yet. In this study, we generated transgenic lines expressing GFP-tagged CLF/SWN under their respective native promoters and used them for ChIP-seq analyses to profile the genome-wide distributions of CLF and SWN in Arabidopsis seedlings. We also profiled and compared the global H3K27me3 levels in wild-type (WT) and PcG mutants (clf, swn, and clf swn). Our data show that CLF and SWN bind to almost the same set of genes, except that SWN has a few hundred more targets. Two short DNA sequences, the GAGA-like and Telo-box-like motifs, were found enriched in the CLF and SWN binding regions. The H3K27me3 levels in clf, but not in swn, were markedly reduced compared with WT; and the mark was undetectable in the clf swn double mutant. Further, we profiled the transcriptomes in clf, swn, and clf swn, and compared with that in WT. Thus this work provides a useful resource for the plant epigenetics community for dissecting the functions of PRC2 in plant growth and development.

2019-01-28 | GSE108960 | GEO

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