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Precision genome engineering through adenine base editing in plants

An Author Correction to this article was published on 23 August 2018

This article has been updated

Abstract

The recent development of adenine base editors (ABEs) has enabled efficient and precise A-to-G base conversions in higher eukaryotic cells. Here, we show that plant-compatible ABE systems can be successfully applied to protoplasts of Arabidopsis thaliana and Brassica napus through transient transfection, and to individual plants through Agrobacterium-mediated transformation to obtain organisms with desired phenotypes. Targeted, precise A-to-G substitutions generated a single amino acid change in the FT protein or mis-splicing of the PDS3 RNA transcript, and we could thereby obtain transgenic plants with late-flowering and albino phenotypes, respectively. Our results provide ‘proof of concept’ for in planta ABE applications that can lead to induced neo-functionalization or altered mRNA splicing, opening up new avenues for plant genome engineering and biotechnology.

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Fig. 1: Comprehensive A-to-G conversion efficiencies in transient assays using plant protoplasts.
Fig. 2: Analyses of in planta ABE applications.

Change history

  • 23 August 2018

    In Supplementary Fig. 1b originally published with this Brief Communication, the DNA sequence of nickase Cas9 was incorrect; this has now been amended.

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Acknowledgements

We thank all members of the Center for Genome Engineering for their support. We thank J. Suh for comments on the manuscript and technical assistance. This work was supported by the research fund from the Institute for Basic Science, Republic of Korea (IBS-R021-D1).

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Contributions

J.-Y.Y., B.-C.K., S.-T.K. and J.W.W. designed the experiments. B.-C.K., J.-Y.Y., J.R., Y.S. and M.C. generated all the constructs. B.-C.K. performed the transient assay in protoplasts. J.-Y.Y., Y.S. and J.R. generated the transgenic Arabidopsis and analysed the plants. J.-Y.Y., S.-T.K., B.-C.K. and J.-S.K. wrote the manuscript with the help of all other authors. J.-S.K. supervised the project.

Corresponding author

Correspondence to Jin-Soo Kim.

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Competing interests

J.-S.K. is a co-founder of and holds stocks in ToolGen, Inc. All other authors declare no competing interests.

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Supplementary Figures 1–8, Supplementary Table 1

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Kang, BC., Yun, JY., Kim, ST. et al. Precision genome engineering through adenine base editing in plants. Nature Plants 4, 427–431 (2018). https://doi.org/10.1038/s41477-018-0178-x

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