| Literature DB >> 11238379 |
T Singer1, C Yordan, R A Martienssen.
Abstract
Robertson's Mutator transposable elements in maize undergo cycles of activity and then inactivity that correlate with changes in cytosine methylation. Mutator-like elements are present in the Arabidopsis genome but are heavily methylated and inactive. These elements become demethylated and active in the chromatin-remodeling mutant ddm1 (Decrease in DNA Methylation), which leads to loss of heterochromatic DNA methylation. Thus, DNA transposons in plants appear to be regulated by chromatin remodeling. In inbred ddm1 strains, transposed elements may account, in part, for mutant phenotypes unlinked to ddm1. Gene silencing and paramutation are also regulated by DDM1, providing support for the proposition that epigenetic silencing is related to transposon regulation.Entities:
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Year: 2001 PMID: 11238379 PMCID: PMC312647 DOI: 10.1101/gad.193701
Source DB: PubMed Journal: Genes Dev ISSN: 0890-9369 Impact factor: 11.361