生物
表观遗传学
转基因
DNA甲基化
遗传学
基因沉默
基因组
计算生物学
基因
基因表达
作者
A. J. M. Matzke,Marjori Matzke
标识
DOI:10.1016/s1369-5266(98)80016-2
摘要
Nuclear processes that silence plant transgenes are being revealed by analyses of natural triggers of epigenetic modifications, particularly cytosine methylation, and by comparisons of the genomic environments of differentially expressed transgene loci. It is increasingly apparent that plant genomes can sense and respond to the presence of foreign DNA in certain sequence contexts and at multiple dispersed sites. Determining the basis of this sensitivity and how nuclear defense systems are activated poses major challenges for the future.
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