论文部分内容阅读
In eukaryotic organisms, numerous transposons and other repetitive sequences must be epigenetically silenced to maintain genome stability.On the other hand, some repetitive sequences including repetitive genes and genes with repeat elements need to be protected from epigenetic silencing in order to be expressed.RNA-directed DNA methylation (RdDM) is known to be an important pathway for the epigenetic silencing of transposons and other repetitive elements in plants.