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. 2020 Mar 9;11:262. doi: 10.3389/fpls.2020.00262

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Copyright © 2020 Hugues, Jacobs and Roudier.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Chromatin replication can potentiate cell fate transitions. During chromatin replication, asymmetric inheritance of parental H3K27me3 can lead to transcriptional reactivation in only one daughter cell (Middle, Top, Bottom). In case of symmetric inheritance of parental H3K27me3, repressive chromatin is switched from a stable repressive state to a metastable state that is permissive for epigenetic reprogramming (Middle). By default, H3K27me3 landscapes are restored such that repressive chromatin remains silent (Right, Bottom). Nevertheless, local disruption of the restoration of repressive chromatin can trigger specific changes in gene expression (Right, Top).