Arabidopsis proteins with a transposon-related domain act in gene silencing

Yoko Ikeda, Thierry Pélissier, Pierre Bourguet, Claude Becker, Marie Noëlle Pouch-Pélissier, Romain Pogorelcnik, Magdalena Weingartner, Detlef Weigel, Jean Marc Deragon, Olivier Mathieu

    Research output: Contribution to journalArticlepeer-review

    11 Citations (Scopus)

    Abstract

    Transposable elements (TEs) are prevalent in most eukaryotes, and host genomes have devised silencing strategies to rein in TE activity. One of these, transcriptional silencing, is generally associated with DNA methylation and short interfering RNAs. Here we show that the Arabidopsis genes MAIL1 and MAIN define an alternative silencing pathway independent of DNA methylation and short interfering RNAs. Mutants for MAIL1 or MAIN exhibit release of silencing and appear to show impaired condensation of pericentromeric heterochromatin. Phylogenetic analysis suggests not only that MAIL1 and MAIN encode a retrotransposonrelated plant mobile domain, but also that host plant mobile domains were captured by DNA transposons during plant evolution. Our results reveal a role for Arabidopsis proteins with a transposon-related domain in gene silencing.

    Original languageEnglish
    Article number15122
    JournalNature communications
    Volume8
    DOIs
    Publication statusPublished - 2017

    ASJC Scopus subject areas

    • Chemistry(all)
    • Biochemistry, Genetics and Molecular Biology(all)
    • Physics and Astronomy(all)

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