| 摘要: |
| 【目的】通过分析大豆中候选内参基因的稳定性，筛选大豆干旱胁迫处理条件下适合成熟miRNA、前体miRNA及靶基因mRNA荧光定量PCR的内参基因。【方法】以干旱胁迫处理后的大豆根和叶片为材料，选择了5个成熟miRNAs和5个传统的看家基因作为候选内参基因，利用GeNorm和NormFinder程序对10个候选内参基因的稳定性进行评价。【结果】在干旱胁迫下，大豆根、叶片中，成熟miRNA定量最合适的单个内参基因分别为miR156a、miR167a，最合适的内参基因组合分别为miR1520d与miR156a、miR1520d与miR167a。前体miRNA和靶基因mRNA定量最合适的单个内参基因分别为Fbox、Act11，最合适的内参基因组合分别为Act11与Fbox、Act11与EF1A。【结论】筛选出大豆干旱胁迫条件下成熟miRNA、前体miRNA及其对应靶基因mRNA的荧光定量PCR的内参基因，最稳定内参基因数目为2个。 |
| 关键词: 大豆 干旱胁迫 荧光定量PCR 内参基因 成熟miRNA 前体miRNA 靶基因mRNA |
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| 基金项目:国家转基因生物新品种培育重大专项(2014ZX08010-002)；国家自然科学基金项目(31271746，31201144)；吉林省发改委项目(JF2012C002-04) |
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| Selection of reference genes for quantitative polymerase chain reaction of miRNA and mRNA in soybean under drought stress |
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LIU Wei-can,WANG Qi,ZHOU Yong-gang,et al
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| Abstract: |
| 【Objective】This study aimed to select appropriate reference genes for qPCR of mature miRNAs,Pre-miRNAs and their target mRNA genes in soybean by analyzing the stabilities of candidate reference genes under drought.【Method】Roots and leaves of soybean after drought stress treatment were used as materials in this experiment,and five mature miRNAs and five traditional housekeeping genes were selected as candidate reference genes to evaluate their stabilities using GeNorm and NormFinder procedures.【Result】Under drought treatment to soybean,miR156a and miR167a were found to be the most suitable reference gene for qPCR of mature miRNA while miR1520d/miR156a and miR1520d/miR167a were the most suitable reference gene pairs in roots and leaves,respectively.For qPCR of Pre-miRNAs and their target mRNA genes,Fbox and Act11 were the most suitable reference genes while Act11/Fbox and Act11/EF1A were the most suitable reference gene pairs in roots and leaves,respectively.【Conclusion】Two most suitable reference gene pairs for qPCR of mature miRNAs,Pre-miRNAs and their target mRNA genes under drought stress were obtained,respectively. |
| Key words: soybean drought stress qPCR reference genes mature miRNA Pre-miRNA target mRNA gene |
