Abstract
Genome editing with CRISPR/Cas9 has become an effective tool for gene functionality dissection and crop improvement. Accordingly, we have developed a CRISPR/Cas9 vector system for robust multi-gene editing in plants. Our inventory includes six versatile binary vectors and 12 intermediary sgRNA vectors with different U3 and U6 promoters, to achieve high efficient multi-gene editing, under specific antibiotic selections in both monocot and dicot plants. Additionally, we also have developed an integrated web-based software toolkit, CRISPR-GE, to facilitate the utilization CRISPR/Cas9 in plants. In this protocol, we provide detailed procedures for using the CRISPR/Cas9 system, including target site selection, construction of CRISPR/Cas9 binary vectors, Sanger-sequencing-based genotyping of mutant sites, and troubleshooting for common problems.
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