Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (10): 2332-2345.DOI: 10.3969/j.issn.1004-1524.20221404

• Horticultural Science • Previous Articles     Next Articles

Preliminary screening of Northern Salix (Salix psammophila) architecture related genes based on RNA-Seq analysis and quantitative PCR technique

HE Rong1(), ZHAO Kai1, HE Yujiao1, ALATENG Suhe2, WANG Aijun3, NING Jing3, HAN Ruoshuang4, SUN Guirong2, ZHANG Guosheng1,*()   

  1. 1. College of Forestry, Inner Mongolia Agricultural University, Hohhot 010019, China
    2. Forest General Site of Erdos, Erdos 014300, Inner Mongolia, China
    3. Inner Mongolia Forestry Scientific Research Institute, Hohhot 010013, China
    4. Inner Mongolia Autonomous Region Forestry and Grassland Seedling General Station, Hohhot 010010, China
  • Received:2022-09-27 Online:2023-10-25 Published:2023-10-31

Abstract:

In order to construct a molecularly assisted breeding system for efficient targeted breeding of Salix psammophila architectures, a combination of transcriptome sequencing in the hydroponic population and quantitative PCR analysis in the field training population was used to explore candidate gene mining techniques related to Salix psammophila architectures, using the correlation coefficient between gene expression (FPKM value) and ratio of crown and height in RNA-Seq analysis as predictive values. The results showed that there was a correlation between ratio of crown and height (plant architecture characteristic value) and FPKM value in Salix psammophila, and the trend remained largely consistent in the hydroponic prediction population and field training population. The predicted values of plant architecture (or branching)-related genes (TAC2, LAZY1b, ZFP4, TB1, SPA2, ABF2 and PYL1) reported in the literature ranged from 0 to 0.6, and the predicted values of ATX1, RFK1 and FHY1 genes (not reported to be plant architecture-related) were higher (0.6 to 1.0). The two-gene combination (ATX1+FHY1) was selected as the gene for the identification of Salix psammophila architectures according to the principle of “the least number of genes and the highest correlation coefficient”. Morphology and transcriptomics as a whole are the characteristics of this study, and the results can also provide a theoretical basis for molecularly assisted breeding of other plants and other traits.

Key words: ratio of crown and height, correlation coefficient, transcriptome sequencing technology, quantitative real-time PCR, gene mining, Salix psammophila

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