Abstract
Here we describe development of transgenic elite rice lines expressing a Bt fusion gene derived from cryIA(b) and cryIA(c) under the control of rice actinI promoter. The lines used in the study were indica CMS restorer line of Minghui 63 and its derived hybrid rice Shanyou 63. The level of Bt fusion protein CryIA(b)/CryIA(c) detected in Minghui 63 (T51-1) plants was 20 ng/mg soluble protein. The Bt Shanyou 63 was field-tested in natural and repeated heavy manual infestation of two lepidopteran insects, leaffolder and yellow stem borer. The transgenic hybrid plants showed high protection against both insect pests without reduced yield.
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Acknowledgements
Financial support of BMZ/GTZ (Germany), the Rockefeller Foundation (USA), and China National ‘863’ High Technology Program is gratefully acknowledged. We also thank Prof. Yunliu Fan for providing the Bt construct. Thanks go to colleagues Mike Cohen, Lina Torrizo, Norman Oliva, Michelle Viray, and Niranjan Baisakh for their research and technical assistance and to Bill Hardy for editorial help.
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Tu, J., Zhang, G., Datta, K. et al. Field performance of transgenic elite commercial hybrid rice expressing Bacillus thuringiensis δ-endotoxin. Nat Biotechnol 18, 1101–1104 (2000). https://doi.org/10.1038/80310
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DOI: https://doi.org/10.1038/80310
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