Production of transgenic rice plants expressing Dioscorea batatas tuber lectin 1 to confer resistance against brown planthopper

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概要

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• Dioscorea batatas tuber lectin 1 (DB1) is a storage protein isolated from yam tuber and has been shown to be a mannose-binding lectin. Here we produced transgenic rice plants expressing cDNA of DB1 under the control of phloem-specific promoter of rice sucrose synthase-1 gene. DB1 accumulated at a level of 0.07% of total soluble protein. We then evaluated its efficacy for brown planthopper (BPH). After releasing the first instar of BPH on the transgenic rice plants, the number of survived BPH adults was reduced up to 30% compared to that of wild-type rice. The number of the next generation BPH was suppressed to 22% on average in the seven most-resistant plants compared to that of wild-type rice plants when female adult BPH was inoculated. These results demonstrated that DB1 is effective to confer BPH resistance in terms of decreased survival and fecundity.

著者

• KAKU Koichiro

  Life Science Research Institute, Kumiai Chemical Industry Co., Ltd.

• Muramoto Koji

  Graduate School Of Agricultural Science Tohoku University

• Kaku Koichiro

  Life Science Research Institute Kumiai Chemical Industry Co. Ltd.

• Ogawa Tomohisa

  Graduate School Of Life Sciences Tohoku University

• Toriyama Kinya

  Graduate School Of Agric. Sci. Tohoku Univ.

• HORI Masatoshi

  Graduate School of Agriculture and Life Sciences, The University of Tokyo

• Komatsu Masaaki

  Life Science Research Institute, Kumiai Chemical Industry Co., Ltd.

• Kazama Tomohiko

  Graduate School of Agricultural Science, Tohoku University

• Ito Yukihiro

  Graduate School of Agricultural Science, Tohoku University

• Yoshimura Shoichiro

  Graduate School of Agricultural Science, Tohoku University

• Hori Masatoshi

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

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