中国水稻科学

中国水稻科学

• 研究简报 • 上一篇    下一篇

Cecropin B转基因水稻及其后代抗白叶枯病研究初报

华志华;汪晓玲;薛 锐;高振宇;黄大年   

  1. 中国水稻研究所，杭州310006
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1999-04-10 发布日期:1999-04-10

Resistance of Cecropin B Gene Transformed Rice ( Oryza sativa ) and Progenies to Bacterial Blight ( Xanthomonas oryzae pv. oryzae )

Hua Zhihua; Wang Xiaoling; Xue Rui; Gao Zhenyu; Huang Danian   

  • Received:1900-01-01 Revised:1900-01-01 Online:1999-04-10 Published:1999-04-10

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被引次数

48

摘要： 就单株自交繁殖得到的京引119的Cecropin B转基因水稻T0代到T5代共6个世代的不同单株株系对白叶枯病的抗性进行了初步研究。结果表明，Cecropin B转基因水稻对白叶枯病的抗病性在后代中出现分离，但能传递到高世代，在T4代中得到两个抗病性提高的株系。从白叶枯病菌侵染抗病性不同的株系的动态变化结果表明，Cecropin B转基因水稻能抵抗白叶枯病的轻度感染，但要彻底改进转基因水稻抗病性，必须有高水平的杀灭病菌的物质表达。

关键词: 转基因植株, 白叶枯病, 抗性, 水稻

Abstract: The resistance to bacterial blight in different transgenic plantlines of rice variety Jingyin 119 from 6 generations of T 0 to T 5 was primarily studied. Results showed that the resistance to bacterial blight delivered from cecropin B transgene could be segregated and transmitted to high generations. Two resistance improved plantlines were obtained in T 4 generation. From the dynamic change of bacterial infection in different resistance plantlines, it was inferred that cecropin B transgene expression could inhibit the bacterial infection partially, but high level expression of anti bacterial subject was necessary for improving transgenic rice bacterial disease resistance thoroughly.

Key words: bacterial blight, resistance, rice, transgenic plant