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Series GSE51304 Query DataSets for GSE51304
Status Public on Dec 15, 2013
Title Non-CG methylation patterns shape the epigenetic landscape in Arabidopsis
Organism Arabidopsis thaliana
Experiment type Expression profiling by high throughput sequencing
Genome binding/occupancy profiling by high throughput sequencing
Methylation profiling by high throughput sequencing
Non-coding RNA profiling by high throughput sequencing
Summary DNA methylation occurs in both CG and non-CG sequence contexts. Non-CG methylation is abundant in plants, and is mediated by CHROMOMETHYLASE (CMT) and DOMAINS REARRANGED METHYLTRANSFERASE (DRM) proteins; however its roles remain poorly understood. Here we characterize the roles of non-CG methylation in Arabidopsis thaliana. We show that a poorly characterized methyltransferase, CMT2, is a functional methyltransferase in vitro and in vivo. CMT2 specifically binds histone H3 lysine 9 (H3K9) dimethylation and methylates non-CG cytosines at sites that are also regulated by H3K9 dimethylation. By generating different combinations of non-CG methylation mutants, we reveal the contributions and redundancies between each methyltransferase in DNA methylation patterning and in regulating transposable elements (TEs) and protein-coding genes. We also demonstrate extensive dependencies of small RNA accumulation and H3K9 methylation patterning on non-CG methylation, suggesting self-reinforcing mechanisms between these epigenetic factors. The results suggest that non-CG methylation patterns are critical in shaping the histone modification and small non-coding RNA landscapes.
 
Overall design Eighteen mRNA-seq samples, five smRNA-seq samples, five bisulfite-seq samples, twenty ChIP-seq samples. Bisulfite-seq data for cmt2-7 single mutants, cmt3 single mutants, drm1/2 double mutants, drm1/2 cmt3 triple mutants are deposited in GSE39901. Processed wiggle format files for all datasets can be downloaded at http://genomes.mcdb.ucla.edu/AthBSseq/
 
Contributor(s) Stroud H
Citation(s) 24336224
Submission date Sep 30, 2013
Last update date May 15, 2019
Contact name Hume Stroud
Organization name UT Southwestern
Street address 5323 Harry Hines Blvd
City Dallas
State/province TX
ZIP/Postal code 75390
Country USA
 
Platforms (1)
GPL13222 Illumina HiSeq 2000 (Arabidopsis thaliana)
Samples (48)
GSM1242374 WT_mRNA_rep1
GSM1242375 WT_mRNA_rep2
GSM1242376 drm12_mRNA_rep1
Relations
BioProject PRJNA222364
SRA SRP030646

Download family Format
SOFT formatted family file(s) SOFTHelp
MINiML formatted family file(s) MINiMLHelp
Series Matrix File(s) TXTHelp

Supplementary file Size Download File type/resource
GSE51304_RAW.tar 2.2 Gb (http)(custom) TAR (of TXT, WIG)
SRA Run SelectorHelp
Raw data are available in SRA
Processed data provided as supplementary file

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