Evolution of Polycomb-group function in the green lineage
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Updated: Jan 27, 2026

Cell Lineage Analyses and Gene Function Studies Using Twin-spot MARCM
Published on: March 2, 2017
1Department of Biology, Epigenetics of Plants, Freie Universität Berlin, Berlin, Germany.
Abstract:
Epigenetic gene regulation ensures the mitotically or meiotically stable heritability (or both) of gene expression or protein activity states and maintains repetitive element repression and cellular identities. The repressive Polycomb-group (PcG) proteins consist of several large complexes that control cellular memory by acting on chromatin and are antagonized by the Trithorax-group proteins. Especially, Polycomb repressive complex 2 (PRC2) is highly conserved in plants and animals but its function in unicellular eukaryotes and during land plant evolution is less understood. Additional PcG complexes and associated proteins are only partially conserved and have evolved in a lineage-specific manner. In this review, I will focus on recent advances in the understanding of PcG function in the green lineage and its contribution to land plant evolution.
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