Methylome dynamics during Arabidopsis reproduction

Reproduction is a key step in any organism's life cycle and its success relies on complex gene regulation. The fusion of highly specialized cells, the gametes, generate a totipotent embryo. We are studying the molecular mechanisms that regulate epigenetic marks, especially DNA methylation, transmission during sexual reproduction in the model plant Arabidopsis thaliana. As epigenetic marks can be modified by environmental factors, it is important to understand how DNA methylation is stably maintained while still allowing diversity in plants and other sexual organisms.

Recent Publications

  • The Diversity of Plant Small RNAs Silencing Mechanisms
    Schroder, JA; Jullien, PE
    CHIMIA, 73 (5):362-367; 10.2533/chimia.2019.362 MAY 2019
  • A complex of Arabidopsis DRB proteins can impair dsRNA processing 
    Tschopp, Marie-Aude; Iki, Taichiro; Brosnan, Christopher A.; Jullien, PE; Pumplin, N
    RNA 23(5):782-797, 10.1261/rna.059519.116  MAY 2017
  • DNA Methylation Influences the Expression of DICER-LIKE4 Isoforms, Which Encode Proteins of Alternative Localization and Function 
    Pumplin, Nathan; Sarazin, Alexis; Jullien, Pauline E.; et al. 
    PLANT CELL, 28 (11): 2786-2804, https://doi.org/10.1105/tpc.16.00554  NOV 2016
  • DNA Methylation Dynamics during Sexual Reproduction in Arabidopsis thaliana 
    Jullien, Pauline E.; Susaki, Daichi; Yelagandula, Ramesh; et al. 
    CURRENT BIOLOGY 22(19):1825-1830, 10.1016/j.cub.2012.07.061 OCT 9 2012
  • Reprogramming of DNA Methylation in Pollen Guides Epigenetic Inheritance via Small RNA 
    Calarco, Joseph P.; Borges, Filipe; Donoghue, Mark T. A.; et al. 
    CELL 151(1):194-205, 10.1016/j.cell.2012.09.001  SEP 28 2012
  • DNA methylation reprogramming during plant sexual reproduction? 
    Jullien, Pauline E.; Berger, Frederic 
    TRENDS IN GENETICS 26(9):394-399, 10.1016/j.tig.2010.06.001  SEP 2010
Pauline Jullien

Prof. Dr. Pauline Jullien
University of Bern
Institute of Plant Sciences
3013 Bern

Tel: +41 (0)31 631 3842

Research topics

  • DNA methylation
  • Sexual reproduction
  • Seed development
  • Small RNA