GEO DataSets

(Submitter supplied) DNA methylation is a chromatin modification that is sometimes associated with epigenetic regulation of gene expression. As DNA methylation can be reversible at some loci, it is possible that methylation patterns may change within an organism that is subjected to environmental stress. In order to assess the effects of abiotic stress on DNA methylation patterns in maize (Zea mays), we subjected seedlings to heat, cold and UV stress treatments. more...

Organism:

Zea mays

Type:

Methylation profiling by genome tiling array

Platform:

GPL15621

18 Samples

Download data: IGV, PAIR

(Submitter supplied) Plants regenerated from tissue culture and their progenies are expected to be identical clones, but often display heritable molecular and phenotypic variation. We characterized DNA methylation patterns in callus, primary regenerants, and regenerant-derived progenies using immunoprecipitation of methylated DNA (meDIP) to assess the genome-wide frequency, pattern, and heritability of DNA methylation changes. more...

Organism:

Zea mays

Type:

Methylation profiling by genome tiling array

Platform:

GPL15621

25 Samples

Download data: PAIR

(Submitter supplied) DNA methylation is a chromatin modification that is frequently associated with epigenetic regulation in plants and mammals. However, other genetic changes such as transposon insertions also can lead to changes in DNA methylation levels. Genome-wide profiles of DNA methylation levels for 20 maize inbreds were used to discover differentially methylated regions (DMRs). The methylation level for each of these DMRs was also assayed in 31 additional maize genotypes resulting in the discovery of 1,966 common DMRs and 1,754 rare DMRs. more...

Organism:

Zea mays

Type:

Methylation profiling by genome tiling array

Platforms:

GPL15621 GPL17181 GPL13499

86 Samples

Download data: PAIR

(Submitter supplied) Trimethylation of histone H3 lysine 27 (H3K27me3) plays a critical role in regulating gene expression during plant and animal development. We characterized the genome-wide distribution of H3K27me3 in five developmentally distinct tissues in maize plants of two genetic backgrounds, B73 and Mo17, representatives of two distinct heterotic groups. There are numerous differences in the distribution of H3K27me3 among tissues. more...

Organism:

Zea mays

Type:

Genome binding/occupancy profiling by genome tiling array

Platforms:

GPL15621 GPL13499

13 Samples

Download data: PAIR

(Submitter supplied) Transposable elements have the potential to act as controlling elements to influence the expression of genes. The current paradigm suggests that heterochromatic silencing can spread beyond the borders of the transposable element and influence the chromatin state of neighboring low-copy sequences. This would allow transposable elements to condition obligatory or facilitated epialleles and act as controlling elements. more...

Organism:

Zea mays

Type:

Methylation profiling by genome tiling array

Platforms:

GPL13499 GPL15621

5 Samples

Download data: PAIR

(Submitter supplied) Epigenetic marks such as DNA methylation can act as heritable marks on a genome leading to unique regulation of genomic sequences. As a transient mark, DNA methylation has been identified as a possible mechanism for reversible genetic regulation of cells derived through either mitotic or meiotic cellular division. Although variation between epigenetic states is known to exist between individuals, there is little known about the variability of DNA methylation patterns between different developmental stages of an individual. more...

Organism:

Zea mays

Type:

Methylation profiling by genome tiling array

Platforms:

GPL13499 GPL15621

8 Samples

Download data: PAIR