【摘要】 随着转基因技术在各个领域的深入发展 ,转基因沉默已引起越来越多的人关注 .其作用机制主要有三种 :位置效应、转录水平的基因沉默和转录后水平的基因沉默 .实验表明 ,MAR不仅能提高植物中转基因的整体表达水平 ,同时还可以降低不同转化体之间的差异 ,有效消除植物转基因沉默更多还原

【Abstract】 With the development of genetic engineering,more and more people pay attention to transgene silencing.The main mechanisms,including position effect,transcriptional silencing and post transcriptional silencing was presented. MAR shows capacity to increase levels of transgene expression and reduce transformatit to transformant variation of transgene expression in stable transformed plants.更多还原