3BAMBOO - An algorithmic view on genomes, cells, and environments (Laboratoire de Biométrie et Biologie Évolutive. UMR CNRS 5558 Campus de La Doua - Université Claude Bernard - Lyon 1 Bâtiment Grégoire Mendel - 16 rue Raphael Dubois 69 100 Villeurbanne -- INRIA Grenoble - Rhône-Alpes Inovallée 655 avenue de l'Europe -Montbonnot 38 334 Saint Ismier Cedex France - France)
Abstract : Transposable elements (TEs), whose propagation can result in severe damage to the host genome, are silenced in the animal gonad by Piwi-interacting RNAs (piRNAs). piRNAs produced in the ovaries are deposited in the embryonic germline and initiate TE repression in the germline progeny. Whether the maternally transmitted piRNAs play a role in the silencing of somatic TEs is however unknown. Here we show that maternally transmitted piRNAs from the tirant retrotransposon in Drosophila are required for the somatic silencing of the TE and correlate with an increase in histone H3K9 trimethylation an active tirant copy.
https://hal.inria.fr/hal-00850319
Contributeur : Marie-France Sagot
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Soumis le : mardi 6 août 2013 - 10:43:22
Dernière modification le : vendredi 20 avril 2018 - 01:27:42
