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Rapid breeding of parthenocarpic tomato plants using CRISPR/Cas9

Ueta, Risa, Abe, Chihiro, Watanabe, Takahito, Sugano, Shigeo S., Ishihara, Ryosuke, Ezura, Hiroshi, Osakabe, Yuriko, Osakabe, Keishi·2017·Scientific Reports
DOI 10.1038/s41598-017-00501-4PMC PMC5428692
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Abstract

Parthenocarpy in horticultural crop plants is an important trait with agricultural value for various industrial purposes as well as direct eating quality. Here, we demonstrate a breeding strategy to generate parthenocarpic tomato plants using the CRISPR/Cas9 system. We optimized the CRISPR/Cas9 system to introduce somatic mutations effectively into SlIAA9—a key gene controlling parthenocarpy—with mutation rates of up to 100% in the T0 generation. Furthermore, analysis of off-target mutations using deep sequencing indicated that our customized gRNAs induced no additional mutations in the host genome. Regenerated mutants exhibited morphological changes in leaf shape and seedless fruit—a characteristic of parthenocarpic tomato. And the segregated next generation (T1) also showed a severe phenotype associated with the homozygous mutated genome. The system developed here could be applied to produce parthenocarpic tomato in a wide variety of cultivars, as well as other major horticultural crops, using this precise and rapid breeding technique.

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Research works printed but not linked: 29

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Metadata

Authors
Ueta, R., Abe, C., Watanabe, T., Sugano, S. S., Ishihara, R., Ezura, H., Osakabe, Y., & Osakabe, K.
ORCID
Osakabe, Keishi
Venue
Scientific Reports
Publisher
Springer Science and Business Media LLC
Published
2017-03-30
Volume
7
Issue
1
ISSN
2045-2322
DOI
10.1038/s41598-017-00501-4
PMC
PMC5428692
Cited by
256
References
8
Language
en
Update notices
correction (2020-10-02)
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