PTGS is dispensable for the initiation of epigenetic silencing of an active transposon inArabidopsis
Marieke Trasser,
Grégoire Bohl-Viallefond,
Verónica Barragán-Borrero
et al.
Abstract:Transposable elements (TEs) are largely repressed in plants through transcriptional gene silencing (TGS), which is maintained by heritable epigenetic silencing marks such as DNA methylation. However, the mechanisms by which silencing is installed in the first place remains poorly understood in plants. Small interfering (si)RNAs and post-transcriptional gene silencing (PTGS) play a role in the initial response by reducing mRNA and protein levels of active TEs and are believed to mediate the initiation of TGS by… Show more
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