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Efficient Genome Editing in Apple Using a CRISPR/Cas9 system.


ABSTRACT: Genome editing is a powerful technique for genome modification in molecular research and crop breeding, and has the great advantage of imparting novel desired traits to genetic resources. However, the genome editing of fruit tree plantlets remains to be established. In this study, we describe induction of a targeted gene mutation in the endogenous apple phytoene desaturase (PDS) gene using the CRISPR/Cas9 system. Four guide RNAs (gRNAs) were designed and stably transformed with Cas9 separately in apple. Clear and partial albino phenotypes were observed in 31.8% of regenerated plantlets for one gRNA, and bi-allelic mutations in apple PDS were confirmed by DNA sequencing. In addition, an 18-bp gRNA also induced a targeted mutation. These CRIPSR/Cas9 induced-mutations in the apple genome suggest activation of the NHEJ pathway, but with some involvement also of the HR pathway. Our results demonstrate that genome editing can be practically applied to modify the apple genome.

SUBMITTER: Nishitani C 

PROVIDER: S-EPMC4987624 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Efficient Genome Editing in Apple Using a CRISPR/Cas9 system.

Nishitani Chikako C   Hirai Narumi N   Komori Sadao S   Wada Masato M   Okada Kazuma K   Osakabe Keishi K   Yamamoto Toshiya T   Osakabe Yuriko Y  

Scientific reports 20160817


Genome editing is a powerful technique for genome modification in molecular research and crop breeding, and has the great advantage of imparting novel desired traits to genetic resources. However, the genome editing of fruit tree plantlets remains to be established. In this study, we describe induction of a targeted gene mutation in the endogenous apple phytoene desaturase (PDS) gene using the CRISPR/Cas9 system. Four guide RNAs (gRNAs) were designed and stably transformed with Cas9 separately i  ...[more]

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