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MicroRNAs in Plants Development and Stress Resistance.

Xi Zhao1, Jia Yang1, Haiyan Wang1

  • 1State Key Laboratory of Plant Environmental Resilience, Engineering Research Center of Plant Growth Regulator, Ministry of Education & College of Agronomy and Biotechnology, China Agricultural University, Beijing, China.

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|April 21, 2025
PubMed
Summary
This summary is machine-generated.

MicroRNAs (miRNAs) are key regulators of plant development and stress responses. Further research using artificial miRNAs and mimics can enhance crop yield and sustainability.

Keywords:
abiotic stressbiotic stressmiRNAsplant architecture

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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Genetics

Background:

  • Plant growth and development follow timed ontogenetic programs.
  • MicroRNAs (miRNAs) are short noncoding RNAs regulating gene expression post-transcriptionally.
  • miRNAs are crucial for plant agronomic traits and stress adaptation.

Purpose of the Study:

  • To review the regulatory roles of miRNAs in plant development and stress resistance.
  • To explore novel miRNA applications for crop improvement.

Main Methods:

  • Literature review of miRNA functions in plants.
  • Analysis of miRNA targeting of transcription factors (TFs).
  • Discussion of artificial miRNA (amiRNA) and short tandem target mimics (STTM) applications.

Main Results:

  • miRNAs regulate plant structure (root, stem, leaf, sex determination, nutrient transition).
  • miRNAs mediate adaptation to various biotic and abiotic stresses (fungi, drought, salinity, temperature extremes, heavy metals).

Conclusions:

  • miRNAs are essential regulators of plant development and stress tolerance.
  • Novel miRNAs can be studied using amiRNA or STTM technologies.
  • In vitro miRNA delivery holds potential for improving crop yield and agricultural sustainability.