Mechanisms of epigenetic regulation of transcription by lncRNAs in plants
- PMID: 36222018
- DOI: 10.1002/iub.2681
Mechanisms of epigenetic regulation of transcription by lncRNAs in plants
Abstract
Long noncoding RNAs (lncRNAs) are an ubiquitous feature of eukaryotic genomes and in recent decades have been shown to be highly abundant and varied. Many prominent examples have been described as having essential roles in regulating the expression of genes in different developmental and environmental contexts. As a result, much work has been done on elucidating the mechanisms by which they modulate the expression of protein coding genes. In this review, we focus on those which have been characterized in plants. We specifically examine common epigenetic mechanisms that regulate gene expression at the level of transcription. In this regard, we focus on the lncRNAs in plants that have primarily been associated with controlling the chromatin environment of genes at the level of modifications, RNA POLYMERASE II (RNAPII) processivity and efficiency of transcription, and mediating the formation of transcriptionally activating and repressive chromatin loops. We discuss open questions in plant lncRNA epigenetic regulation and opportunities for future study of functionally significant lncRNAs with yet-unknown epigenetic mechanisms.
Keywords: Chromatin; RNA polymerase; epigenetics; gene regulation; lncRNAs; plants.
© 2022 International Union of Biochemistry and Molecular Biology.
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