CRISPR genome editing in plants without tissue culture

Area of Science:

• Plant biotechnology
• Genomics
• Molecular biology

Background:

• Conventional plant genome editing requires complex tissue culture and regeneration.
• This process is a significant bottleneck, limiting its application in many plant species.

Purpose of the Study:

• To review emerging strategies for plant genome editing that bypass traditional tissue culture methods.
• To highlight advances enabling direct genome editing in meristematic or germline cells.

Main Methods:

• Genome editing via de novo meristem induction or dormant meristem activation.
• Germline editing using graft-mobile tRNA-like sequences and haploid induction.
• Optimized viral delivery systems with mobile RNA elements and compact editors (e.g., TnpB).

Main Results:

• Development of tissue culture-free genome editing platforms.
• Efficient, transgene-free, heritable genetic modifications achieved across diverse genotypes and species.
• Demonstration of direct genome editing in meristematic and germline cells.

Conclusions:

• Emerging tissue culture-free genome editing technologies circumvent previous limitations.
• These platforms offer revolutionary potential for crop improvement and sustainable agriculture.
• Accelerated trait development is anticipated through these advanced molecular techniques.