植物转基因沉默机制及消除对策

The Mechanism and Eliminating of Foreign Gene Silencingin Transgenet-ic Plants

从位置效应、转录水平的基因沉默和转录后水平的基因沉默等三个方面阐述了植物转基因沉默的作用机制,并提出了相应的消除对策,以期为寻找控制植物转基因失活技术提供帮助,促进植物基因工程的发展。

Transgenes are inactive and the trans-gene expression couldn't be detected thoroughly ,which are called as gene silencing in transgenet-ic plants. The main mechanisms, including position effects, transcriptional silencing and post-transcriptional silencing was presented, the means of stabilizing gene expression in transge-netic plants was discussed. Studying the cause for silencing of foreign genes and learning the method to overcome gene silencing are important for the development of plant gene engineering.