Identification of MicroRNAs in Wild Soybean (Glycine soja)

文献类型： 外文期刊

第一作者： Chen, Rui

作者： Chen, Rui;Hu, Zheng;Zhang, Hui

作者机构：

关键词： microRNAs;plants;wild soybean

期刊名称：JOURNAL OF INTEGRATIVE PLANT BIOLOGY （ 影响因子：7.061； 五年影响因子：6.002 ）

ISSN： 1672-9072

年卷期： 2009 年 51 卷 12 期

页码：

收录情况： SCI

摘要： MicroRNAs (miRNAs) play important roles in post-transcriptional gene silencing by directing target mRNA cleavage or translational inhibition. Currently, hundreds of miRNAs have been identified in plants, but no report has been published of wild soybean (Glycine soja Sieb). We constructed a small-RNA library consisting of 2 880 sequences with high quality, in which 1 347 were 19-24 nt in length. By utilizing the miRNA, Rfam and domesticated soybean expressed sequence tag database, we have analyzed and predicted the secondary structure of these small RNAs. As a result, 15 conserved miRNA candidates belonging to eight different families and nine novel miRNA candidates comprising eight families were identified in wild soybean seedlings. All these miRNA candidates were validated by northern blot and the novel candidates expressed in a tissue-specific manner. Furthermore, putative target genes were predicted for novel miRNA candidates and two of them were verified by 5'-rapid amplification of cDNA ends experiments. These results provided useful information for miRNA research in wild soybean and plants.

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