Genomic Distribution of Maize Facultative Heterochromatin Marked by Trimethylation of H3K27

ABSTRACT: 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. In contrast, we found the distribution of H3K27me3 among the two genetic backgrounds to be quite similar. The tissue-specific patterns of H3K27me3 are often associated with differences in gene expression among the tissues and most of the imprinted genes that are expressed solely from the paternal allele in endosperm are targets of H3K27me3. Many maize genes with import

ORGANISM(S): Zea mays

SUBMITTER: Steve Eichten 

PROVIDER: E-GEOD-39456 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress