| Literature DB >> 12184986 |
Mario F Fraga1, Roberto Rodríguez, Maria Jesús Cañal.
Abstract
In animals, DNA methylation is related to gene silencing during ontogenic development. Little is known about DNA methylation in plants, although occasional changes in the DNA methylation state of specific gene promoters have been reported in angiosperms during some developmental processes. We found large differences in the extent of DNA methylation between meristematic areas of juvenile and mature Pinus radiata D. Don. trees, whereas differences in the extent of DNA methylation between differentiated tissues of juvenile and mature trees were small. In meristematic areas, there was a gradual decrease in extent of DNA methylation as the degree of reinvigoration increased. The observed changes in extent of DNA methylation during aging and reinvigoration indicate that reinvigoration could be a consequence of epigenetic modifications opposite in direction to those that occur during aging.Entities:
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Year: 2002 PMID： 12184986 DOI： 10.1093/treephys/22.11.813
Source DB: PubMed Journal: Tree Physiol ISSN： 0829-318X Impact factor: 4.196