携带 MIR820 的水稻 CACTA DNA 转座子的拷贝数与 MIR820 的表达水平不相关。
The copy number of rice CACTA DNA transposons carrying MIR820 does not correlate with MIR820 expression.
机构信息
Graduate School of Bioagricultural Sciences; Nagoya University; Nagoya, Japan.
出版信息
Plant Signal Behav. 2013 Aug;8(8). doi: 10.4161/psb.25169. Epub 2013 May 31.
Abstract
MiR820 is a small RNA species (22 and 24 nucleotides), produced from transcripts originated from a region inside CACTA DNA transposons in rice. Because MIR820 is a transposon gene, its expression may depend on the transposon copy number. Here, we investigated the copy number of MIR820 and its expression levels in various cultivars and wild species of rice. We found no correlation between copy number and expression level, suggesting that MIR820 transcription is regulated not by the copy dosage but by the epigenetic state of each copy.
摘要
miR820 是一种小 RNA 种类（22 到 24 个核苷酸），来源于水稻 CACTA 转座子内部转录本。由于 MIR820 是一个转座子基因，其表达可能依赖于转座子拷贝数。在这里，我们研究了 MIR820 的拷贝数及其在不同水稻品种和野生种中的表达水平。我们发现拷贝数和表达水平之间没有相关性，这表明 MIR820 的转录不是由拷贝剂量调控，而是由每个拷贝的表观遗传状态调控。
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