应用生态学报2012，Vol.23Issue(6)：1713-1720,8.
转基因水稻基因流的发生与生态学后果
Occurrence and ecological consequences of transgenic rice gene flow: A review
摘要
Abstract
China is one of the origin centers of rice ( Oryza sativa) , with a distribution of abundant wild rice germplasm resources. Since the biosafety certificates were issued to Bt transgenic rice containing crylAc gene against lepidopteran pests, concerns are raised on the gene flow from transgenic rice to its wild relatives. This paper reviewed the occurrence of transgenic rice gene flow and its potential ecological consequences. Most studies suggested that transgenic rice could successfully hybridize with cultivated rice, wild rice ( O.rufipogon) , red rice ( O. sativa f. spontanea) , and barnyard grass (Echinochloa caudata) , and the gene flow from transgenic rice had a lower occurrence frequency and was highly variable. Once the gene flow successfully occurred, the transgenes could introgress into a wild population within only a few generations because of the fitness advantage of transgenic rice due to the new selective traits of transgenes. When the transgenic plants invaded and persisted in a wild population, the dynamic changes of the mixed population would depend on the relative fitness and competition capability. To study the effects of the gene flow of transgenic rice and its long-term ecological consequences would have significance in rationally protecting and utilizing wild rice germplasm resources in China.关键词
转基因水稻/近缘野生种/基因流/基因渐渗Key words
transgenic rice/ wild relatives/ gene flow/ introgression分类
农业科技引用本文复制引用
刘勇波,李俊生,赵彩云,肖能文,关潇..转基因水稻基因流的发生与生态学后果[J].应用生态学报,2012,23(6):1713-1720,8.基金项目
转基因生物新品种培育重大专项(2012ZX08011002,2009ZX08011-013B)和中国环境科学研究院院所基本科研业务专项(2011YSKY-08)资助. （2012ZX08011002,2009ZX08011-013B）
