Selection and Validation of Reference Genes for Quantitative Gene Expression Analyses in Persimmon (Diospyros kaki Thunb.) Using Real-Time Quantitative PCR

Du, Gaigai and Wang, Liyuan and Li, Huawei and Sun, Peng and Fu, Jianmin and Suo, Yujing and Han, Weijuan and Diao, Songfeng and Mai, Yini and Li, Fangdong (2019) Selection and Validation of Reference Genes for Quantitative Gene Expression Analyses in Persimmon (Diospyros kaki Thunb.) Using Real-Time Quantitative PCR. BIOLOGIA FUTURA, 70 (4). pp. 261-267. ISSN 2676-8615 (print); 2676-8607 (online)

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Abstract

Background and aims: Persimmon (Diospyros kaki) is an economically important fruit tree species with complex flowering characteristics. To obtain accurate expression pattern analysis results, it is vital to select a reliable gene for the normalization of real-time quantitative polymerase chain reaction data. The aim of this study was to identify the optimal internal control gene among six candidate genes for gene expression analysis in different persimmon organs and developmental stages. Materials and methods: This analysis was conducted using geNorm and NormFinder software to show differences in the stability of the six reference genes among tissues and floral developmental stages of the same plant. Results: Although genes that exhibited moderate expression in NormFinder revealed slightly different expression stabilities than those obtained by geNorm, both sets of results showed that GAPDH was the best reference gene in different organs and floral buds at different developmental stages, whereas 18SrRNA was the least stable gene. Conclusions: Based on the overall ranking, GAPDH is the most suitable reference gene and is highly recommended for gene expression studies in different organs and different developmental stages of persimmon. This study provides useful reference data for future gene expression studies and will contribute to improving the accuracy of gene expression results in persimmon.

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