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Updated: Sep 22, 2025

mirMachine: A One-Stop Shop for Plant miRNA Annotation
Published on: May 1, 2021
[Advances of miRNA-mediated regulatory roles in plant-microbe interaction]
Xiaoman Lü1, Wenyi Zhang1, Haihua Zhang1
1College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, Zhejiang, China.
Abstract:
There are many bidirectional communication and crosstalk between microbes and host plants. The plant-pathogen interaction directly affects the survival of host plants, while the interaction between plants and their probiotics benefits both. Plant miRNA responds quickly to pathogenic or beneficial microbes when they enter the plant tissues, while microbes also produce miRNA-like RNA (milRNA) to affect plant health. These means miRNA or milRNA is an important fast-responding molecular mediator in plant-microbe interactions, and these internal mechanisms have been better understood in recent years. This review summarized the regulatory roles of miRNA in plant-pathogens and plant-probiotics interaction. The regulatory role of miRNA in disease resistance of host plants during plant-pathogens interaction, and the regulatory role of miRNA in promoting host growth and development during plant-probiotics interaction, as well as the cross-kingdom regulatory role of milRNA in host plants, were discussed in-depth.
Insights
Plant microRNAs (miRNAs) and microbe-derived miRNA-like RNAs (milRNAs) mediate rapid communication between plants and microbes. This review details their roles in plant defense against pathogens and growth promotion by probiotics.
Area of Science:
- Plant-microbe interactions
- Molecular biology
- Genetics
Background:
- Bidirectional communication and crosstalk occur between plants and microbes.
- Plant-pathogen interactions impact host survival, while plant-probiotic interactions benefit both.
- Plant microRNAs (miRNAs) and microbe-derived miRNA-like RNAs (milRNAs) are key mediators.
Purpose of the Study:
- To review the regulatory roles of miRNAs in plant-pathogen and plant-probiotic interactions.
- To discuss the cross-kingdom regulatory functions of milRNAs in host plants.
Main Methods:
- Literature review of recent research on miRNA and milRNA in plant-microbe interactions.
- Synthesis of findings on molecular mechanisms and regulatory roles.
Main Results:
- Plant miRNAs rapidly respond to microbial ingress, modulating disease resistance and growth.
- Microbes produce milRNAs that influence plant health and development.
- miRNA and milRNA act as crucial fast-responding molecular mediators.
Conclusions:
- Understanding miRNA and milRNA mechanisms enhances knowledge of plant immunity and beneficial microbial interactions.
- These small RNAs are vital for regulating plant responses in diverse microbial contexts.
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