ArticleEMBO reports2024
PTGS is dispensable for the initiation of epigenetic silencing of an active transposon in Arabidopsis.
Article in EMBO reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed.
- Transposon expansion is associated with reorganization of small RNA and DNA methylation landscapes in the morphologically minimal angiosperm Wolffia brasiliensis.The Plant journal : for cell and molecular biology · 2026Article
- Cross-kingdom RNAi: a universal mechanism of inter-organismal communication with many unknowns.Journal of experimental botany · 2026Review
- The nuclear cap-binding complex regulates subcellular RNA processing and surveillance of coding and noncoding RNAs.Nucleic acids research · 2026Article
- Positive-Strand RNA Viruses Induce LTR Retrotransposon Transcription and Extrachromosomal Circular DNA Generation in Plants.International journal of molecular sciences · 2025Article
- Identification of Proteins Associated with Stably Integrated MaizePlants (Basel, Switzerland) · 2025Article
- Genomics in plant pathogen identification and control.Frontiers in plant science · 2025Review
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Authors and funding
7 authors.
Funding
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Abstract
Transposable elements (TEs) are repressed in plants through transcriptional gene silencing (TGS), maintained epigenetic silencing marks such as DNA methylation. However, the mechanisms by which silencing is first installed remain poorly understood in plants. Small interfering (si)RNAs and post-transcriptional gene silencing (PTGS) are believed to mediate the initiation of TGS by guiding the first deposition of DNA methylation. To determine how this silencing installation works, we took advantage of ÉVADÉ (EVD), an endogenous retroelement in Arabidopsis, able to recapitulate true de novo silencing with a sequence of PTGS followed by a TGS. To test whether PTGS is required for TGS, we introduce active EVD into RNA-DEPENDENT-RNA-POLYMERASE-6 (RDR6) mutants, an essential PTGS component. EVD activity and silencing are monitored across several generations. In the absence of PTGS, silencing of EVD is still achieved through installation of RNA-directed DNA methylation (RdDM). Our study shows that PTGS is dispensable for de novo EVD silencing. Although we cannot rule out that PTGS might facilitate TGS, or control TE activity, initiation of epigenetic silencing can take place in its absence.
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