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Selection of reference genes for the quantitative real-time PCR normalization of gene expression in Isatis indigotica fortune

文献类型： 外文期刊

作者： Qu, Renjun 1 ; Miao, Yujing 1 ; Cui, Yingjing 1 ; Cao, Yiwen 1 ; Zhou, Ying 1 ; Tang, Xiaoqing 1 ; Yang, Jie 2 ; Wang, Fa 1 ;

作者机构： 1.Nanjing Agr Univ, Coll Hort, Nanjing 210095, Jiangsu, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Food Crops, Nanjing 210014, Jiangsu, Peoples R China

关键词： Isatis indigotica; qRT-PCR; Reference gene; Gene expression; Normalization

期刊名称：BMC MOLECULAR BIOLOGY （ 影响因子：2.946； 五年影响因子：3.192 ）

ISSN： 1471-2199

年卷期： 2019 年 20 卷

页码：

收录情况： SCI

摘要： BackgroundIsatis indigotica, a traditional Chinese medicine, produces a variety of active ingredients. However, little is known about the key genes and corresponding expression profiling involved in the biosynthesis pathways of these ingredients. Quantitative real-time polymerase chain reaction (qRT-PCR) is a powerful, commonly-used method for gene expression analysis, but the accuracy of the quantitative data produced depends on the appropriate selection of reference genes.ResultsIn this study, the systematic analysis of the reference genes was performed for quantitative real-Time PCR normalization in I. indigotica. We selected nine candidate reference genes, including six traditional housekeeping genes (ACT, -TUB, -TUB, UBC, CYP, and EF1-), and three newly stable internal control genes (MUB, TIP41, and RPL) from a transcriptome dataset of I. indigotica, and evaluated their expression stabilities in different tissues (root, stem, leaf, and petiole) and leaves exposed to three abiotic treatments (low-nitrogen, ABA, and MeJA) using geNorm, NormFinder, BestKeeper, and comprehensive RefFind algorithms. The results demonstrated that MUB and EF1- were the two most stable reference genes for all samples. TIP41 as the optimal reference gene for low-nitrogen stress and MeJA treatment, while ACT had the highest ranking for ABA treatment and CYP was the most suitable for different tissues.ConclusionsThe results revealed that the selection and validation of appropriate reference genes for normalizing data is mandatory to acquire accurate quantification results. The necessity of specific internal control for specific conditions was also emphasized. Furthermore, this work will provide valuable information to enhance further research in gene function and molecular biology on I. indigotica and other related species.

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