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Rice transgene flow: its patterns, model and risk management

文献类型： 外文期刊

作者： Jia, Shirong 1 ; Yuan, Qianhua 2 ; Pei, Xinwu 1 ; Wang, Feng 3 ; Hu, Ning 4 ; Yao, Kemin 4 ; Wang, Zhixing 1 ;

作者机构： 1.Chinese Acad Agr Sci, Biotechnol Res Inst, Beijing 100193, Peoples R China

2.Hainan Univ, Hainan Key Lab Sustainable Utilizat Trop Bioresou, Haikou, Peoples R China

3.Guangdong Acad Agr Sci, Rice Res Inst, Guangzhou, Guangdong, Peoples R China

4.Nanjing Univ Informat Sci & Technol, Coll Appl Meteorol, Nanjing, Jiangsu, Peoples R China

关键词： rice (Oryza sativa L;);common wild rice (O;rufipogon);weedy rice;transgene flow;gene flow model;risk assessment and management

期刊名称：PLANT BIOTECHNOLOGY JOURNAL （ 影响因子：9.803； 五年影响因子：9.555 ）

ISSN：

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收录情况： SCI

摘要： Progress has been made in a 12year's systemic study on the rice transgene flow including (i) with experiments conducted at multiple locations and years using up to 21 pollen recipients, we have elucidated the patterns of transgene flow to different types of rice. The frequency to male sterile lines is 10(1) and 10(3) higher than that to O.rufipogon and rice cultivars. Wind speed and direction are the key meteorological factors affecting rice transgene flow. (ii) A regional applicable rice gene flow model is established and used to predict the maximum threshold distances (MTDs) of gene flow during 30years in 993 major rice producing counties of southern China. The MTD0.1% for rice cultivars is basically 5m in the whole region, despite climate differs significantly at diverse locations and years. This figure is particularly valuable for the commercialization and regulation of transgenic rice. (iii) The long-term fate of transgene integrated into common wild rice was investigated. Results demonstrated that the F-1 hybrids of transgenic rice/O.rufipogon gradually disappeared within 3-5years, and the Bt or bar gene was not detectable in the mixed population, suggesting the O.rufipogon may possess a strong mechanism of exclusiveness for self-protection. (iv) The flowering time isolation and a 2-m-high cloth-screen protection were proved to be effective in reducing transgene flow. We have proposed to use a principle of classification and threshold management for different types of rice.

  • 相关文献

[1]Establishment of a rice transgene flow model for predicting maximum distances of gene flow in Southern China. Yao, Kemin,Hu, Ning,Chen, Wanlong,Li, Renzhong,Yuan, Qianhua,Wang, Feng,Qian, Qian. 2008

[2]Transgene flow to hybrid rice and its male-sterile lines. Jia, Shirong,Wang, Feng,Shi, Lei,Yuan, Qianhua,Liu, Wuge,Liao, Yilong,Li, Shuguang,Jin, Wujun,Peng, Huipu. 2007

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