Gene silencing approaches through virus-based vectors: speeding up functional genomics in monocots

Area of Science:

• Plant Molecular Biology
• Genetics
• Virology

Background:

• Virus-induced gene silencing (VIGS) is a key technique for transient gene silencing in plants, widely adopted for functional genomics, particularly in dicots.
• The application of VIGS in monocots has significantly expanded over the past decade, incorporating both monocot-specific and dicot-derived viral vectors.
• Advancements in VIGS for monocots include the development of new viral vectors and improved inoculation methods to enhance silencing efficiency.

Purpose of the Study:

• To review the current state of VIGS technology for deciphering monocot gene functions.
• To discuss the design and application of existing and novel VIGS vectors for monocots.
• To identify knowledge gaps and future directions for VIGS technology development in monocots.

Main Methods:

• Modification of viral vectors for VIGS applications in monocots.
• Development and testing of new inoculation techniques to improve VIGS efficiency.
• Analysis of insert stability and duration of gene silencing in VIGS experiments.

Main Results:

• VIGS has been successfully employed to elucidate the functions of numerous monocot genes.
• Existing VIGS vectors have been adapted and new ones developed, broadening the scope of monocot species amenable to VIGS.
• Research has addressed challenges related to insert stability and the persistence of gene silencing.

Conclusions:

• Existing VIGS vectors are effective for studying monocot gene function, with ongoing development of new vectors poised to further expand their utility.
• Continued innovation in VIGS vector design and delivery methods is crucial for advancing functional genomics in a wider range of monocots.
• This review highlights progress and outlines future research avenues for optimizing VIGS technology in monocot plants.