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Published on: November 23, 2011
[Epigenetic control, development and natural genetic variation in plants]
Manoël Prouteau1, Vincent Colot
1Unité de Recherche en Génomique végétale, UMR INRA 1165-CNRS 8114-UEVE, 2, rue Gaston-Crémieux, 91057 Evry Cedex, France.
Plants exhibit unique life strategies, differing from animals in development and stress response. Epigenetic regulation, particularly "epimutations," may significantly contribute to plant genetic variation, unlike in mammals.
Area of Science:
- Plant biology
- Epigenetics
- Comparative genomics
Context:
- Plants and animals share fundamental genetic and nuclear organization.
- Distinct life strategies necessitate different mechanisms for development and stress response.
- Germline formation differs significantly, with plants utilizing vegetative stem cells for gamete production.
Purpose:
- To review current knowledge on chromatin-mediated epigenetic processes in plants.
- To compare the role of epigenetics in plants versus mammals.
- To investigate the significance of epimutations in plant genetic variation.
Summary:
- Epigenetic regulation of gene expression appears less prominent in plants compared to mammals.
- Plants show a higher propensity for inducing heritable, chromatin-based gene activity states (epimutations).
- Epimutations may constitute a substantial portion of natural genetic variation in plants.
Impact:
- Epimutations could be a major source of genetic diversity in plants.
- Understanding plant epimutations offers insights into evolutionary adaptation.
- Epimutations in humans are linked to cancers and non-Mendelian inherited disorders, highlighting their broader biological relevance.
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