Efficient Multiplex Genome Editing Induces Precise, and Self-Ligated Type Mutations in Tomato Plants.

ABSTRACT: Several expression systems for multiple guide RNA (gRNAs) have been developed in the CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/CRISPR associated protein 9) system to induce multiple-gene modifications in plants. Here, we evaluated mutation efficiencies in the tomato genome using multiplex CRISPR/Cas9 vectors consisting of various Cas9 expression promoters with multiple gRNA expression combinations. In transgenic tomato calli induced with these vectors, mutation patterns varied depending on the promoters used to express Cas9. By using the tomato ELONGATION FACTOR-1α (SlEF1α) promoter to drive Cas9, occurrence of various types of mutations with high efficiency was detected in the tomato genome. Furthermore, sequence analysis sho

SUBMITTER: Hashimoto R 

PROVIDER: S-EPMC6037947 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature