Chinese Bulletin of Botany ›› 2024, Vol. 59 ›› Issue (2): 0-0.DOI: 10.11983/CBB23065

   

Genome-wide identification and Expression Analysis of SBP Gene Family in Proso Millet

Zhengyong Duan1, Min Ding1, Yuzhuo Wang1, Yibing Ding2, Ling Chen3, Ruiyun Wang1, 3*, Zhijun Qiao3*    

  1. 1College of Agronomy, Shanxi Agricultural University, Taigu 030801, China; 2Corn Research Institute, Shanxi Agricultural University, Xinzhou 034000, China; 3Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau, Ministry of Agriculture and Rural Affairs/Shanxi Key Laboratory of Genetic Resources and Genetic Improvement of Minor Crops/Center for Agricultural Genetic Resources Research, Shanxi Agricultural University, Taiyuan 030031, China
  • Received:2023-05-21 Revised:2023-12-18 Online:2024-03-01 Published:2024-01-12
  • Contact: Ruiyun Wang, Zhijun Qiao

Abstract: Squamosa promoter binding protein (SBP) gene family is widely involved in plant growth and development, signal transduction, and many physiological and biochemical processes. However, the genes of the proso millet (Panicum miliaceum) SBP gene family have not been systematically studied. A total of 25 SBP genes were identified and systematically named in the proso millet genome, and the SBP genes were divided into 6 subfamilies through phylogenetic analysis. The members of the same subfamily had similar gene structure and conserved motifs. The collinearity analysis showed that 7 pairs of direct homologous genes were formed with Arabidopsis thaliana AtSBP and 31 pairs with Oryza sativa OsSBP. The analysis of cis-acting elements showed that the promoter region of SBP gene in proso millet was rich in elements related to stress, plant light response and plant hormone signal response. The analysis of gene expression patterns showed that the SBP gene in proso millet had obvious tissue specificity, and the SBP gene expression pattern was also specific in different varieties, and the expression trend was different in different periods, suggesting that SBP gene should play an important role in the growth and development of proso millet. The results laid a foundation for revealing the biological function of SBP gene family in the growth and development of proso millet, and also provided a reference for the research and application of other crops.

Key words: proso millet,  SBP gene,  complete genome identification,  analysis of gene expression