The presence of a transgene in the genome of plants is a regulatory challenge. Recently, Liu et al. reported an engineered tomato spotted wilt virus (TSWV) that can carry large clustered regularly interspaced palindromic repeats (CRISPR)/Cas reagents for targeted genome editing in various crops without the integration of the transgene into the genome.
Keywords: CRISPR-Cas; CRISPR-Cas12a; genome editing; heritable mutagenesis; mobile RNA; non-transgenic; viral vector.
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