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Related Concept Videos

MicroRNAs01:22

MicroRNAs

21.1K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
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MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
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piRNA - Piwi-interacting RNAs02:57

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PIWI-interacting RNAs, or piRNAs, are the most abundant short non-coding RNAs. More than 20,000 genes have been found in humans that code for piRNAs while only 2000 genes have been found for miRNAs. piRNAs can act at the transcriptional and post-transcriptional levels and have a vital role in silencing transposable elements present in germ cells. They are also involved in epigenetic silencing and activation. Previously, they were thought to function only in germ cells but new evidence suggests...
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Microbe-Plant Interactions01:09

Microbe-Plant Interactions

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Microbe-plant interactions represent a dynamic spectrum of associations shaped by intricate chemical signaling. These interactions can be neutral, beneficial, or detrimental, and profoundly influence plant physiology, growth, and ecosystem function. The plant microbiome, comprising bacteria, fungi, archaea, protists, and viruses, plays a pivotal role in mediating these effects through surface colonization, internal colonization, or systemic symbiosis.Mutualistic associations, particularly with...
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RNA Interference01:23

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RNA interference (RNAi) is a process in which a small non-coding RNA molecule blocks the post-transcriptional expression of a gene by binding to its messenger RNA (mRNA) and preventing the protein from being translated.
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Related Experiment Video

Updated: May 2, 2026

mirMachine: A One-Stop Shop for Plant miRNA Annotation
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mirMachine: A One-Stop Shop for Plant miRNA Annotation

Published on: May 1, 2021

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MicroRNA functions in plant embryos.

Divya Vashisht1, Michael D Nodine1

  • 1*Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, 1030 Vienna, Austria.

Biochemical Society Transactions
|March 21, 2014
PubMed
Summary

Plant microRNAs (miRNAs) are key regulators of gene expression. These small RNAs influence early plant development by repressing transcription factors, impacting gene networks and cellular differentiation.

Area of Science:

  • Molecular Biology
  • Developmental Biology
  • Genetics

Background:

  • Plant microRNAs (miRNAs) are crucial regulators of gene expression.
  • They are short, non-coding RNA molecules.
  • miRNAs mediate the repression of numerous target genes within plant cells.

Purpose of the Study:

  • To investigate the role of plant miRNAs in early embryogenesis.
  • To understand how miRNAs influence the establishment of the basic plant body plan.
  • To explore the impact of miRNAs on developmental timing and cellular differentiation.

Main Methods:

  • Analysis of gene expression data related to miRNAs.
  • Identification of miRNA targets, specifically transcription factor families.
  • Bioinformatic approaches to study gene regulatory networks.

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RNA Blot Analysis for the Detection and Quantification of Plant MicroRNAs
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RNA Blot Analysis for the Detection and Quantification of Plant MicroRNAs

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A Bioinformatics Pipeline to Accurately and Efficiently Analyze the MicroRNA Transcriptomes in Plants
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A Bioinformatics Pipeline to Accurately and Efficiently Analyze the MicroRNA Transcriptomes in Plants

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Related Experiment Videos

Last Updated: May 2, 2026

mirMachine: A One-Stop Shop for Plant miRNA Annotation
06:16

mirMachine: A One-Stop Shop for Plant miRNA Annotation

Published on: May 1, 2021

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RNA Blot Analysis for the Detection and Quantification of Plant MicroRNAs
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RNA Blot Analysis for the Detection and Quantification of Plant MicroRNAs

Published on: July 11, 2020

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A Bioinformatics Pipeline to Accurately and Efficiently Analyze the MicroRNA Transcriptomes in Plants
06:34

A Bioinformatics Pipeline to Accurately and Efficiently Analyze the MicroRNA Transcriptomes in Plants

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Main Results:

  • Plant miRNAs play pivotal roles in embryonic pattern formation and developmental timing.
  • Specific miRNAs were found to repress key transcription factor families during early embryogenesis.
  • These regulatory interactions suggest a significant influence on early cellular differentiation.

Conclusions:

  • MicroRNAs are essential for orchestrating gene regulatory networks during plant embryogenesis.
  • miRNAs significantly contribute to the foundational processes of plant development.
  • Understanding miRNA function provides insights into the genetic control of plant body plan establishment.