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http://dx.doi.org/10.5010/JPB.2011.38.4.251

High-efficiency and Rapid Agrobacterium-mediated genetic transformation method using germinating rice seeds  

Lee, Hye-Jung (Department of Crop Science, Chungbuk National University)
Abdula, Sailila E. (Department of Crop Science, Chungbuk National University)
Jee, Moo-Geun (Department of Crop Science, Chungbuk National University)
Jang, Dae-Won (Department of Crop Science, Chungbuk National University)
Cho, Yong-Gu (Department of Crop Science, Chungbuk National University)
Publication Information
Journal of Plant Biotechnology / v.38, no.4, 2011 , pp. 251-257 More about this Journal
Abstract
Rice is the most important crop as a model plant for functional genomics of monocotyledons. Rice is usually transformed using Agrobacterium tumefaciens. However, the transformation efficiency using previous method is still low. In this study, we established a new method by modifying the general Agrobacterium protocol especially in the inoculation and co-cultivation step. We directly inoculated Agrobacterium containing a CIPK15 gene under the control of CaMV 35S promoter and NOS terminator in the pCAM1300 vector into the pre-soaked seeds in N6D media for 24 hours. After 7 days of culture at $25^{\circ}C$, calli were formed on seeds cultured on the co-cultivation medium containing an antioxidant compound (1 mM dithiothreitol) and of Agrobacterium growth-inhibiting agent (3 mg/L silver nitrate). We obtained 35 and 22 transgenic plants in rice cultivars, Gopumbyeo and Ilpumbyeo, with increase of transformation efficiency by 30.4% and 22.6%, respectively compared to the general transformation method. The new method in this study would lead to reduction of substantial labor and time to generate transgenic plants.
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