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Updated: Mar 20, 2026
10:19
Screening and Identification of RNA Silencing Suppressors from Secreted Effectors of Plant Pathogens
Published on: February 3, 2020
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Small RNAs regulate plant responses to filamentous pathogens
Tung Kuan1, Yi Zhai1, Wenbo Ma1
1Department of Plant Pathology and Microbiology, University of California, Riverside, CA 92521, USA; Center for Plant Cell Biology, University of California, Riverside, CA 92521, USA.
Seminars in Cell & Developmental Biology
|May 22, 2016
Summary
Small RNAs regulate plant immunity by altering gene expression during pathogen infection. This review highlights how small RNAs, particularly secondary small interfering RNAs, modulate plant defense responses against fungal and oomycete pathogens.
Area of Science:
- Molecular Biology
- Plant Science
- Genetics
Background:
- Small RNAs are crucial regulators of gene expression in eukaryotes through RNA silencing.
- These short RNA molecules (20–25 nucleotides) mediate sequence-specific gene repression.
- Emerging evidence shows small RNAs play a significant role in plant immunity, with altered accumulation during infections.
Purpose of the Study:
- To review the role of small RNA changes in plant responses to filamentous eukaryotic pathogens (fungi and oomycetes).
- To elucidate how altered small RNA accumulation influences plant immunity.
- To summarize the cellular processes impacted by these small RNAs in plant defense.
Main Methods:
- Literature review focusing on studies of small RNAs in plant-pathogen interactions.
- Analysis of research detailing small RNA profiles during infection by fungi and oomycetes.
- Synthesis of findings on the mechanisms by which small RNAs modulate plant defense genes.
Main Results:
- Significant changes in small RNA accumulation occur during plant infections by filamentous pathogens.
- Small RNAs, especially secondary small interfering RNAs, directly regulate the expression of plant defense-related genes.
- These small RNAs impact various cellular processes integral to plant immunity.
Conclusions:
- Small RNAs are key modulators of plant immunity against fungal and oomycete pathogens.
- Understanding small RNA pathways offers potential targets for enhancing plant disease resistance.
- Secondary small interfering RNAs represent a critical mechanism in plant defense gene regulation.
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