Spelling changes and fluorescent tagging with prime editing vectors for plants
2020
Prime editing (PE) is a recent adaptation of the CRISPR-Cas system that uses a Cas9(H840A)-reverse transcriptase (RT) fusion and a guide RNA (pegRNA) amended with template and primer binding site (PBS) sequences to achieve RNA-templated conversion of the target DNA, allowing specified substitutions, insertions, and deletions.
In the first report of PE in plants, a variety of edits in rice and wheat were described, including insertions up to 15 bp. Several studies in rice quickly followed, but none reported a larger insertion. Here, we report easy-to-use vectors for PE in dicots and monocots, their validation in Nicotiana benthamiana, rice and Arabidopsis, and an insertion of 66 bp that enabled split-GFP fluorescent tagging.
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