Paternal imprinting in Marchantia polymorpha

Montgomery, Sean A.; Berger, Frédéric

doi:http://dx.doi.org/10.1111/nph.19377

Paternal imprinting in Marchantia polymorpha

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Montgomery SA, Berger F. Paternal imprinting in Marchantia polymorpha. New Phytol. 2024 Feb;241(3):1000-6. DOI: 10.1111/nph.19377

Abstract

We are becoming aware of a growing number of organisms that do not express genetic information equally from both parents as a result of an epigenetic phenomenon called genomic imprinting. Recently, it was shown that the entire paternal genome is repressed during the diploid phase of the life cycle of the liverwort Marchantia polymorpha. The deposition of the repressive epigenetic mark H3K27me3 on the male pronucleus is responsible for the imprinted state, which is reset by the end of meiosis. Here, we put these recent reports in perspective of other forms of imprinting and discuss the potential mechanisms of imprinting in bryophytes and the causes of its evolution.