Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Evaluation of Reference Genes for qRT-PCR Normalization in Angelica decursiva under Various Experimental Conditions

Version 1 : Received: 18 October 2020 / Approved: 19 October 2020 / Online: 19 October 2020 (12:25:21 CEST)

How to cite: He, Y.; Zhong, Y.; Bao, Z.; Wang, W.; Xu, X.; Gai, Y.; Wu, J. Evaluation of Reference Genes for qRT-PCR Normalization in Angelica decursiva under Various Experimental Conditions. Preprints 2020, 2020100379 (doi: 10.20944/preprints202010.0379.v1). He, Y.; Zhong, Y.; Bao, Z.; Wang, W.; Xu, X.; Gai, Y.; Wu, J. Evaluation of Reference Genes for qRT-PCR Normalization in Angelica decursiva under Various Experimental Conditions. Preprints 2020, 2020100379 (doi: 10.20944/preprints202010.0379.v1).

Abstract

Angelica decursiva is one of the lending traditional Chinese medicinal plants producing coumarins. Notably, several studies have focused on the biosynthesis and not the qRT-PCR (quantitative real-time reverse transcription polymerase chain reaction) study of coumarins. This qRT-PCR technique has been extensively used to investigate gene expression levels in plants and the selection of reference genes which plays a crucial role in standardizing the data form the qRT-PCR analysis. In our study, 11 candidate reference genes were selected from the existing transcriptome data of Angelica decursiva. Here, four different types of statistical algorithms (geNorm, NormFinder, BestKeeper, and Delta Ct) were used to calculate and evaluate the stability of gene expression under different external treatments. Subsequently, RefFinder analysis was used to determine the geometric average of each candidate gene ranking, and to perform comprehensive index ranking. The obtained results showed that among all the 11 candidate reference genes, SAND family protein (SAND), protein phosphatase 2A gene (PP2A), and polypyrimidine tract-binding protein (PTBP) were the most stable reference genes, where Nuclear cap binding protein 2 (NCBP2), TIP41-like protein (TIP41), and Beta-6-tubulin (TUBA) were the least stable genes. To the best of our knowledge, this work is the first to evaluate the stability of reference genes in the Angelica decursiva which has provided an important foundation on the use of qRT-PCR for an accurate and far-reaching gene expression analysis in this medicinal plant.

Subject Areas

qRT-PCR; reference gene; Angelica decursiva; expression stability

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