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2016 ; 6
(ä): 24765
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English Wikipedia
CRISPR/Cas9-mediated efficient and heritable targeted mutagenesis in tomato
plants in the first and later generations
#MMPMID27097775
Pan C
; Ye L
; Qin L
; Liu X
; He Y
; Wang J
; Chen L
; Lu G
Sci Rep
2016[Apr]; 6
(ä): 24765
PMID27097775
show ga
The CRISPR/Cas9 system has successfully been used in various organisms for
precise targeted gene editing. Although it has been demonstrated that CRISPR/Cas9
system can induce mutation in tomato plants, the stability of heredity in later
generations and mutant specificity induced by the CRISPR/Cas9 system in tomato
plants have not yet been elucidated in detail. In this study, two genes, SlPDS
and SlPIF4, were used for testing targeted mutagenesis in tomato plants through
an Agrobacterium tumefaciens-mediated transformation method. A high mutation
frequency was observed in all tested targets in the T0 transgenic tomato plants,
with an average frequency of 83.56%. Clear albino phenotypes were observed for
the psd mutants. High frequencies of homozygous and biallelic mutants were
detected even in T0 plants. The majority of the detected mutations were 1- to
3-nucleotide deletions, followed by 1-bp insertions. The target mutations in the
T0 lines were stably transmitted to the T1 and T2 generations, without new
modifications or revision. Off-target activities associated with SlPDS and SlPIF4
were also evaluated by sequencing the putative off-target sites, and no clear
off-target events were detected. Our results demonstrate that the CRISPR/Cas9
system is an efficient tool for generating stable and heritable modifications in
tomato plants.