An Improved Recombineering Toolset for Plants

Area of Science:

• Molecular Biology
• Genetics
• Plant Science

Background:

• Gene functional studies commonly use gene tagging via transcriptional and translational fusions.
• Native chromosomal context is ideal to prevent misexpression artifacts, but classical transgenesis is often preferred for efficiency.
• Genome editing allows direct chromosomal modification, but can be time-consuming.

Purpose of the Study:

• To develop a versatile recombineering-based system for gene tagging.
• To combine the efficiency of transgenesis with the accuracy of direct chromosomal tagging.
• To expand the utility of recombineering for gene tagging beyond model organisms like Arabidopsis thaliana.

Main Methods:

• Developed a recombineering-based tagging system with customizable toolsets and protocols.
• Implemented a recombinase-mediated cassette exchange system for vector transfer.
• Applied the system to generate whole-gene translational fusions and transgenic lines.

Main Results:

• Generated over 250 whole-gene translational fusions and 150 transgenic lines.
• Successfully tagged 62 auxin-related genes in Arabidopsis thaliana.
• Characterized translational reporter expression patterns for 14 auxin biosynthesis genes.

Conclusions:

• The developed recombineering system offers a scalable and efficient method for gene tagging.
• This approach enhances the reliability of gene expression studies by enabling native chromosomal tagging.
• The system facilitates broader application of precise gene tagging strategies in various plant species.