Related Experiment Video
Updated: Jun 12, 2026

A Bioinformatics Pipeline to Accurately and Efficiently Analyze the MicroRNA Transcriptomes in Plants
Published on: January 21, 2020
The Usage of PmiREN (Plant miRNA ENcyclopedia)
Zhonglong Guo1, Zheng Kuang2, Xiaozeng Yang3
1Co-Innovation Center for Sustainable Forestry in Southern China, School of Life Sciences, Nanjing Forestry University, Nanjing, China. guozhl@pku.edu.cn.
Abstract:
MicroRNAs (miRNAs) are endogenous non-coding small RNAs that function as diverse gene regulators at the post-transcriptional level. Over the past two decades, intense research efforts on miRNA identification, function and evolution have raised the demand for miRNA databases. We constructed a knowledge-based database called Plant miRNA Encyclopedia (PmiREN, https://pmiren.com/ ) in 2019 and continued to update it. PmiREN is based on the uniform processing of sequenced small RNA libraries using miRDeep-P2. It currently contains 38,186 high confidence miRNA loci from 179 plant species and incorporates multiple tools for data mining and data-driven research. Here, we summarize the usage of PmiREN, aiming to serve the entire research community of plant miRNAs.
Insights
The Plant miRNA Encyclopedia (PmiREN) database offers a comprehensive resource for plant microRNAs (miRNAs). It provides access to 38,186 miRNA loci across 179 species, aiding plant biology research.
Area of Science:
- Plant Biology
- Genomics
- Bioinformatics
Background:
- MicroRNAs (miRNAs) are crucial post-transcriptional gene regulators.
- Increased research in plant miRNA identification, function, and evolution necessitates robust databases.
- Existing resources require consolidation and uniform processing for broader accessibility.
Purpose of the Study:
- To introduce and summarize the usage of the Plant miRNA Encyclopedia (PmiREN) database.
- To provide a centralized, updated resource for plant miRNA research.
- To support data mining and data-driven research in plant miRNA biology.
Main Methods:
- Construction of a knowledge-based database (PmiREN).
- Uniform processing of sequenced small RNA libraries using miRDeep-P2.
- Inclusion of multiple data mining and analysis tools.
Main Results:
- PmiREN contains 38,186 high-confidence miRNA loci.
- The database covers 179 plant species.
- PmiREN offers integrated tools for research.
Conclusions:
- PmiREN serves as a valuable, updated resource for the plant miRNA research community.
- The database facilitates efficient data mining and exploration of plant miRNA functions.
- PmiREN aims to advance the understanding of plant gene regulation.
Related Concept Videos
MicroRNAs
RNA Interference
This process occurs naturally in cells, often through the activity of genomically-encoded microRNAs. Researchers can take advantage of this mechanism by introducing synthetic RNAs to deactivate specific genes for research or therapeutic purposes. For example, RNAi could be used...
RNA Editing
piRNA - Piwi-interacting RNAs
Experimental RNAi
MicroRNAs

