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Transposon-Derived Non-coding RNAs and Their Function in Plants.

Jungnam Cho1

  • 1The Sainsbury Laboratory, University of Cambridge, Cambridge, United Kingdom.

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Summary
This summary is machine-generated.

Transposable elements (TEs) generate regulatory RNAs in plants. These TE-derived RNAs, including small interfering RNAs and long non-coding RNAs, create novel gene networks impacting plant evolution and stress resistance.

Keywords:
domesticationlong non-coding RNAmicroRNA target mimicsmall RNAtransposable elements

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Area of Science:

  • Genomics
  • Molecular Biology
  • Plant Science

Background:

  • Transposable elements (TEs) are DNA sequences capable of changing their position within a genome, often suppressed by epigenetic mechanisms.
  • TE mobilization contributes to genomic and transcriptomic variability, crucial for species survival and evolution.
  • While TEs primarily influence neighboring genes in cis, their trans-acting regulatory roles via RNA are increasingly recognized.

Purpose of the Study:

  • To review recent discoveries on the regulatory roles of transposable element-derived RNAs in plants.
  • To highlight the significance of TE-derived small RNAs and long non-coding RNAs in gene regulation.
  • To explore how these RNAs contribute to plant adaptation, stress resistance, and evolution.

Main Methods:

  • Literature review of recent research on TE-derived RNAs in plants.
  • Analysis of studies investigating small interfering RNAs (siRNAs) and microRNAs (miRNAs) from TEs.
  • Examination of research on long non-coding RNAs (lncRNAs) originating from TEs.

Main Results:

  • TEs are a significant source of small RNAs (siRNAs, miRNAs) in plants, capable of regulating non-TE transcripts.
  • TE-derived small RNAs can establish novel gene regulatory networks, influencing stress resistance and hybridization barriers.
  • Long non-coding RNAs (lncRNAs) from TEs, like those in rice roots, can act as decoys or miRNA mimics, impacting gene expression and development.

Conclusions:

  • Transposable element-derived RNAs play crucial regulatory roles in plants, extending beyond their traditional view as genomic parasites.
  • These RNAs contribute to complex gene regulatory networks, influencing essential plant processes and adaptation.
  • Further research into TE-derived RNAs offers insights into plant evolution, development, and responses to environmental challenges.