Prime genome editing in rice and wheat.

Lin, Qiupeng; Zong, Yuan; Xue, Chenxiao; Wang, Shengxing; Jin, Shuai; Zhu, Zixu; Wang, Yanpeng; Anzalone, Andrew V et al. · Nat Biotechnol · 2020

basic_science · Level V

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Abstract

Prime editors, which are CRISPR-Cas9 nickase (H840A)-reverse transcriptase fusions programmed with prime editing guide RNAs (pegRNAs), can edit bases in mammalian cells without donor DNA or double-strand breaks. We adapted prime editors for use in plants through codon, promoter, and editing-condition optimization. The resulting suite of plant prime editors enable point mutations, insertions and deletions in rice and wheat protoplasts. Regenerated prime-edited rice plants were obtained at frequencies of up to 21.8%.

Medical subject headings