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Agrobacterium tumefaciens-mediated transformation of rice with the spider insecticidal gene conferring resistance to leaffolder and striped stem borer

引用

Cell Research 2001年第2期11卷 149-155页

作者： HUANG JIAN QIU, ZHI MING WEI, HAI LONG AN, YU XIAN ZHU National Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, China National La National Laboratory of Plant Molecular Genetics Institute of Plant Physiology and Ecology Shanghai Institute for Biological Sciences Chinese Academy of Sciences Shanghai China National Laboratory of Plant Genetic Engineering and Protein Engineering College of Life Science Peking University Beijing China

Immature embryos of rice varieties 'Xiushui11' and 'Chunjiang 11' precultured for 4d were infected and transformed by Agrobacterium tumefaciens strain EHA101/pExT7 (containing the spider insecticidal gene). The resistant cant were transferred onto the differentiation medium and plants were regenerated. The transformation frequency reached 56%-72% measured as numbers of Geneticin (G418)-resistant calli produced and 36%-60% measured as numbers of transgenic plants regenerated, respectively. PCR and Southern blot analysis of transgenic plants confirmed that the T-DNA had been integrated into the rice genome. insect bioassay. using T1 transgenic plants indicated that the mortality of the leaffolder (Cnaphalocrasis medinalis) after 7d of leaf feeding reached 38%-61% and the corrected mortality of the striped stem borer (Chilo suppressalis) after 7d of leaf feeding reached 16%-75%. The insect bioassay.results demonstrated that the transgenic plants expressing the spider insecticidal protein conferred enhanced resistance to these pests.

关键词： Rice Agrobacterium tumefaciens spider insecticidal gene transgenic plant Leaffolder striped stem borer insect bioassay.

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