PAmiRDB: A web resource for plant miRNAs targeting viruses

Area of Science:

• Plant molecular biology
• Virology
• Bioinformatics

Background:

• MicroRNAs (miRNAs) are key components of host antiviral defenses, regulating viral gene expression by targeting viral messenger RNAs (mRNAs).
• While miRNA-mediated antiviral mechanisms are established in animals, their role in plants is less explored, despite evidence from artificial miRNA studies suggesting similar functions.
• A gap exists in publicly available resources for predicting plant miRNA interactions with viral targets.

Purpose of the Study:

• To computationally predict and compile interactions between plant microRNAs and viral genes.
• To establish a comprehensive resource for exploring plant-based antiviral miRNA mechanisms.
• To facilitate experimental validation of predicted plant-virus miRNA interactions.

Main Methods:

• Development of a predictive pipeline to identify potential targeting interactions between known plant miRNAs and viral gene sequences.
• Compilation of predicted interactions into a curated database, PAmiRDB.
• Creation of a user-friendly query interface for exploring predicted plant miRNA-viral gene interactions.

Main Results:

• The PAmiRDB database currently contains over 2600 plant miRNAs and their predicted targets in approximately 500 viral species.
• The database focuses on major plant virus families, including geminiviruses and potyviruses.
• An integrated toolset within PAmiRDB assists researchers in designing experiments to confirm predicted interactions.

Conclusions:

• PAmiRDB provides a valuable resource for understanding plant antiviral defense mechanisms mediated by miRNAs.
• The database enables comprehensive investigation of host-virus miRNA interactions and supports experimental design.
• This work contributes to the field of plant virology and miRNA research by offering a predictive tool and a centralized data repository.