选择合适的内参基因是提高实时荧光定量PCR分析(qRT-PCR)准确性的先决条件。该文以茶树(Camellia sinensis)芽、叶、幼根、嫩茎、花瓣、种子和愈伤组织为材料,应用实时荧光定量PCR技术,分析了18S rRNA、GAPDH、β-actin和α-tubulin4个常用内参基因在茶树不同器官组织中的表达情况。经GeNorm和NormFinder软件分析发现,当利用荧光定量PCR分析比较茶树不同器官组织中的基因表达差异时,可选择β-actin作为校正内参基因;而比较不同成熟度的叶片和愈伤组织时,可以选择GAPDH作为校正内参基因。
The selection of a suitable reference gene is an important prerequisite for successful gene expression analysis by real-time fluorescence quantitative PCR (qPCR).We investigated the expression stability of 4 endogenous candidate genes (18S rRNA,GAPDH,β-actin and α-tubulin) in qPCR experiments in different organs and tissues,including buds,leaves,young roots,stem,petals,seeds,and callus,of the tea plant Camellia sinensis (L.) O.Kuntze.The analysis with GeNorm and NormFinder algorithms revealed that β-actin could be used as a reference gene for organs and tissues and GAPDH for mature leaves and callus.