Genome-Wide Identification of New Reference Genes for qRT-PCR Normalization under High Temperature Stress in Rice Endosperm

Heng Xu, Jian-Dong Bao, Ji-Song Dai, Yongqing Li and Ying Zhu

PLOS ONE, 2015, vol. 10, issue 11, 1-13

Abstract: qRT-PCR is one of the most popular approaches to analyze specific gene expression level, and stably expressed reference genes are essential to obtain reliable results. However, many reference genes are only stable under certain circumstances and different reference genes might be required in different experiments. High temperature is a common stress that affects rice endosperm development and it has become a hot topic recently. Although study about reference genes at different developmental stages in rice has been reported, these genes may not be suitable to study high temperature mediated responses especially in endosperm. In our quest for proper reference genes to quantify gene expression in rice endosperm under high temperature, we studied 6 candidate genes selected from the transcriptome data and 11 housekeeping genes. All genes were analyzed with qRT-PCR and the expression stability was assessed with software geNorm and NormFinder. Fb15 and eIF-4a were identified as the two most stable genes in endosperm at different developmental stages, while high temperature treatment has a least effect on expression of Fb15 and UBQ5 in rice endosperm. Our results provide some good candidate reference genes for qRT-PCR normalization in rice endosperm under different temperatures.

Date: 2015
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0142015

DOI: 10.1371/journal.pone.0142015

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