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大豆科学  2015 

大豆疫霉根腐病相关miRNA的鉴定

DOI: ?10.11861/j.issn.1000-9841.2015.04.0666, PP. 666-670

Keywords: 栽培大豆,保守miRNA,Northernblotting,大豆疫霉根腐病

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Abstract:

microRNA(miRNA)是近年来在真核生物中发现的一类具有调控功能的非编码RNA,通过碱基互补在基因转录和转录后水平调控靶基因的表达,参与调控植物生长发育,并在响应多种生物及非生物胁迫中发挥重要作用。本文利用大豆疫霉菌2号生理小种(P6497)接种8个栽培大豆品种,通过Northernblotting技术,对大豆中的7个保守miRNAs进行检测。结果发现,有6个miRNAs在这8个大豆栽培品种中都有表达,但在接种病原菌前后没有明显的差异。使用高通量的小分子RNA芯片技术检测差异表达的miRNAs。利用抗性品种Williams82和感病品种Williams分别接种P6497,获得部分与大豆疫霉菌侵染相关的miRNAs。结果显示,部分miRNAs可能参与调控大豆疫霉根腐病抗性。

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