植物学报 ›› 2024, Vol. 59 ›› Issue (2): 0-0.DOI: 10.11983/CBB23065

• 研究报告 •    

糜子SBP基因家族的全基因组鉴定及表达分析

段政勇[1], 丁敏1, 王宇卓1, 丁艺冰2, 陈凌3, 王瑞云1, 3*, 乔治军3*   

  1. 1山西农业大学农学院, 太谷 030801; 2山西农业大学玉米研究所, 忻州 034000; 3山西农业大学农业基因资源研究中心/农业农村部黄土高原作物基因资源与种质创制重点实验室/杂粮种质资源发掘与遗传改良山西省重点实验室, 太原 030031
  • 收稿日期:2023-05-21 修回日期:2023-12-18 出版日期:2024-03-01 发布日期:2024-01-12
  • 通讯作者: 王瑞云, 乔治军
  • 基金资助:

     国家现代农业产业技术体系建设专项(No.CARS-06-14.5-A16)、山西省现代农业产业技术体系建设(杂粮)项目(No.2023CYJSTX03-12)、山西省重点研发项目(No.2022ZDYF110)和国家自然科学基金(No.31271791)

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

摘要: SBP (squamosa promoter binding protein)家族广泛参与植物生长发育、信号转导及多种生理生化过程。为探究糜子(Panicum miliaceum)中SBP转录因子基因家族的组成与功能, 以双粒糜子和单粒糜子为材料, 基于糜子全基因组Pm_0390_v2, 利用生物信息学方法从中筛选并鉴定到25个SBP基因(PmSBP1PmSBP25), 并对其理化性质、染色体分布、基因结构特征、系统进化关系、组织特异性以及不同时期基因表达模式进行系统分析。结果表明, 25个PmSBPs基因不均匀分布在13条染色体上, 其编码蛋白的氨基酸残基介于105–  1 109 aa之间, 等电点为5.60–11.92, 分子量介于9.0320–1 215.1362 kDa之间。基因结构和系统发育分析表明, PmSBP家族成员可分为6个亚家族。共线性分析表明, PmSBP与拟南芥(Arabidopsis thaliana) AtSBP和水稻(Oryza sativa) OsSBP分别形成7对和31对直系同源基因。顺式作用元件分析表明, PmSBP启动子区富含逆境胁迫、光反应及激素信号响应相关元件。基因表达模式分析表明, PmSBP基因具有明显的组织表达特异性, 双粒糜子和单粒糜子中PmSBP表达模式不同, 抽穗期和开花期的表达趋势存在差异。研究结果为揭示SBP基因在糜子生长发育中的生物学功能奠定了基础, 也为其它作物SBP基因研究和遗传转化提供借鉴参考。

关键词: 糜子, PmSBP基因, 全基因组鉴定, 基因表达分析

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