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Epigenetic regulation and reprogramming during gamete formation in plants


Baroux, C; Raissig, M T; Grossniklaus, U (2011). Epigenetic regulation and reprogramming during gamete formation in plants. Current Opinion in Genetics & Development, 21(2):124-133.

Abstract

Plants and animals reproduce sexually via specialized, highly differentiated gametes. Yet, gamete formation drastically differs between the two kingdoms. In flowering plants, the specification of cells destined to enter meiosis occurs late in development, gametic and accessory cells are usually derived from the same meiotic product, and two distinct female gametes involved in double fertilization differentiate. This poses fascinating questions in terms of gamete development and the associated epigenetic processes. Although studies in this area remain at their infancy, it becomes clear that large-scale epigenetic reprogramming, involving RNA-directed DNA methylation, chromatin modifications, and nucleosome remodeling, contributes to the establishment of transcriptionally repressive or permissive epigenetic landscapes. Furthermore, a role for small RNAs in the regulation of transposable elements during gametogenesis is emerging.

Abstract

Plants and animals reproduce sexually via specialized, highly differentiated gametes. Yet, gamete formation drastically differs between the two kingdoms. In flowering plants, the specification of cells destined to enter meiosis occurs late in development, gametic and accessory cells are usually derived from the same meiotic product, and two distinct female gametes involved in double fertilization differentiate. This poses fascinating questions in terms of gamete development and the associated epigenetic processes. Although studies in this area remain at their infancy, it becomes clear that large-scale epigenetic reprogramming, involving RNA-directed DNA methylation, chromatin modifications, and nucleosome remodeling, contributes to the establishment of transcriptionally repressive or permissive epigenetic landscapes. Furthermore, a role for small RNAs in the regulation of transposable elements during gametogenesis is emerging.

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Additional indexing

Item Type:Journal Article, not_refereed, further contribution
Communities & Collections:07 Faculty of Science > Department of Plant and Microbial Biology
Dewey Decimal Classification:580 Plants (Botany)
Scopus Subject Areas:Life Sciences > Genetics
Life Sciences > Developmental Biology
Language:English
Date:2011
Deposited On:27 Jan 2012 15:44
Last Modified:30 Jul 2020 02:51
Publisher:Elsevier
ISSN:0959-437X
OA Status:Closed
Publisher DOI:https://doi.org/10.1016/j.gde.2011.01.017
PubMed ID:21324672

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