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Scientia Silvae Sinicae ›› 2014, Vol. 50 ›› Issue (9): 167-172.doi: 10.11707/j.1001-7488.20140923

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The Selection of Reference Genes for Real-Time Quantitative PCR Normalization in Black Locust(Robinia pseudoacacia)

Wang Jinxing1, Zhang Lijun2, Liao Ziyi3, Zhang Yungen4, Qiu Qiandong1, Sun Peng1 5, Sun Yuhan1, Hu Ruiyang1, Lu Nan1, Li Yun1   

  1. 1. National Engineering Laboratory for Tree Breeding Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants of Ministry of Education College of Biological Sciences and Technology, Beijing Forestry University Beijing 100083;
    2. Beijing Sandstorm Source Nursery Center Beijing 102115;
    3. Administrative Department of State-Owned Forest Farm of Sanming City in Fujian Province Sanming 365000;
    4. The State-Owned Forest Farm of Ninghua County in Fujian Province Ninghua 365413;
    5. Non-Timber Forestry Research and Development Center, Chinese Academy of Forestry Zhengzhou 450003
  • Received:2013-12-04 Revised:2014-03-28 Online:2014-09-25 Published:2014-09-30
  • Contact: 李云

Abstract:

The real-time PCR is an important method for analyzing gene expression levels. Selection of reference genes suitable for calibration of the expression of objective gene according to specific experimental materials and conditions is a prerequisite for obtaining reliable RT-PCR results. In this study, we used different individuals and different organs of black locust(Robinia pseudoacacia)to test the stability of six internal genes such as Actin gene (ACT), 18S ribosomal RNA ( 18S rRNA), adenosylmethionine decarboxylase gene (SAMDC), helicase gene (Helicase), elongation factor gene ( EF1 -α), glyceraldehyde-3-phosphate-dehydrogenase gene (GAPDH) in the real-time PCR. After being analyzed with Genorm and NormFinder, the results showed that the ACT and 18S rRNA gene were the most stable genes by using different plant individuals as experimental material, while the ACT and GAPDH were the most stable genes with using different tissues and organs. Since some controversies existed with the 18S rRNA as reference gene, the both ACT and GAPDH used for reference gene in various test conditions obtained more accurate results. This study has important implications in obtaining a more accurate result of quantitative expression of black locust.

Key words: Robinia pseudoacacia, reference gene, real-time quantitative PCR, GeNorm, NormFinder

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