Oral Presentation 47th Lorne Genome Conference 2026

The Control of Transposable Elements for Genome Engineering in Plants (134298)

Keith Slotkin 1
  1. Donald Danforth Plant Science Center, St. Louis, MISSOURI, United States

The engineering and placement of new custom DNA into specific locations in plant genomes is both low frequency and error-prone. This inefficiency hampers all approaches to develop new and enhance existing agricultural traits in crops. Technology such as CRISPR-Cas nuclease systems act like molecular “scissors” to cut DNA at specific locations in the genome. However, after cutting the DNA, the precise addition of new DNA has remained a challenge. Our takes advantage of the natural ability of transposable elements to precisely excise and insert into the genome. We demonstrated sequence-specific targeted delivery (guided by the CRISPR gRNA) of enhancer elements, open reading frames and gene expression cassettes into the genome of the model plant Arabidopsis. We additionally translated this system into soybean, a major global crop in need of targeted insertion technology. We have engineered natural plant transposable element systems into the missing “glue” to insert DNA, creating a toolkit that enables the sequence-specific targeting of custom DNA into plant genomes for genome engineering.