A stable and simple transformation of rice (Oryza sativa L. ssp indica) mature embryo using in planta method

Document Type : Research Paper

Authors

University of Guilan

Abstract

Agrobacterium-mediated transformation technique is a powerful and essential tool for genetic transformation and transgenic rice plant production. In this study an in planta transformation method was used for rice plants transformation. Therefore, rice seeds were socked for two days and the mature rice embryos was inoculated by means of an Agrobacterium coated needle. An experiment with factorial design including two strains of Agrobacterium tumefaciens (EHA105 and LBA4404) harboring pCAMBIAl105.1R, three levels of Acetosyringone (0, 100 and 200 Mµ), three cultivars of rice (Hashemi, Hasani and Gharib) and two treatments of vacuum and no vacuum operation was carried out in a Completely Randomized Design with three replications. Integration of the transgene into the genome of putative transgenic rice plants were confirmed using resistance of leaf tissues to Hygromycin, the histiochemical GUS assay and PCR with at least three different genes. Accordingly, EHA105 strain and Hashemi cultivar in the presence of 100µM acetosyringone using vacuum in a vir genes induction medium had a significant transformation efficiency (37.46%). The success of transformation was further confirmed by analysis of T1 generation with 21% transgenic.

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