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Research article - Peer-reviewed, 2020

Nyctinastic thallus movement in the liverwort Marchantia polymorpha is regulated by a circadian clock

Lagercrantz, Ulf; Billhardt, Anja; Rousku, Sabine N.; Ljung, Karin; Eklund, D. Magnus


The circadian clock coordinates an organism's growth, development and physiology with environmental factors. One illuminating example is the rhythmic growth of hypocotyls and cotyledons in Arabidopsis thaliana. Such daily oscillations in leaf position are often referred to as sleep movements or nyctinasty. Here, we report that plantlets of the liverwort Marchantia polymorpha show analogous rhythmic movements of thallus lobes, and that the circadian clock controls this rhythm, with auxin a likely output pathway affecting these movements. The mechanisms of this circadian clock are partly conserved as compared to angiosperms, with homologs to the core clock genes PRR, RVE and TOC1 forming a core transcriptional feedback loop also in M. polymorpha.

Published in

Scientific Reports
2020, volume: 10, number: 1, article number: 8658

Authors' information

Lagercrantz, Ulf
Uppsala Univ
Billhardt, Anja
Uppsala Univ
Rousku, Sabine N.
Uppsala Univ
Swedish University of Agricultural Sciences, Department of Forest Genetics and Plant Physiology
Eklund, D. Magnus
Uppsala Univ

UKÄ Subject classification

Developmental Biology

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