Site-specific mutagenesis in a rice genome was obtained by introducing chimeric RNA/DNA oligonucleotides (COs) by means of particle bombardment. Three COs were designed to target the independent codons for Pro-171, Trp-548 and Ser-627 of the endogenous rice acetolactate synthase (ALS) gene so it would confer resistance to ALS-inhibiting herbicides. Sequencing of the ALS gene of herbicide-resistant plants demonstrated that the ALS sequence was modified in a site-specific fashion. The efficiency of gene conversion mediated by COs was estimated to be 1×10-4. These results demonstrate that CO-directed gene targeting is feasible in rice.
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Similar content being viewed by others Explore related subjectsDiscover the latest articles and news from researchers in related subjects, suggested using machine learning. AbbreviationsAcetolactate synthase
Bispyribac-sodium
Chlorsulfuron
Chimeric RNA/DNA oligonucleotide
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We are grateful to the Kumiai Chemical Industry Co, Shizuoka, Japan for the gifts of BS and valuable comments.
Author information Authors and AffiliationsLaboratory of Plant Breeding and Genetics, Graduate School of Agricultural Science, Tohoku University, Aoba-ku, 981-8555, Sendai, Japan
A. Okuzaki & K. Toriyama
Correspondence to K. Toriyama.
Additional informationCommunicated by H. Uchimiya
About this article Cite this articleOkuzaki, A., Toriyama, K. Chimeric RNA/DNA oligonucleotide-directed gene targeting in rice. Plant Cell Rep 22, 509–512 (2004). https://doi.org/10.1007/s00299-003-0698-2
Received: 14 February 2003
Revised: 22 July 2003
Accepted: 23 July 2003
Published: 21 November 2003
Issue Date: February 2004
DOI: https://doi.org/10.1007/s00299-003-0698-2
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