浙江农业学报 ›› 2026, Vol. 38 ›› Issue (2): 269-283.DOI: 10.3969/j.issn.1004-1524.20241050

• 园艺科学 • 上一篇    下一篇

膜荚黄芪TCP基因家族全基因组分析及其对非生物胁迫的响应

马琦洋a(), 黄雪莲b,*()   

  1. a.浙江中医药大学 第一临床医学院, 浙江 杭州 310053
    b.浙江中医药大学 基础医学院, 浙江 杭州 310053
  • 收稿日期:2024-12-02 出版日期:2026-02-25 发布日期:2026-03-24
  • 作者简介:马琦洋,主要从事中药资源鉴定与草药分子生理研究。E-mail: mqy20242025@163.com
  • 通讯作者: *黄雪莲,E-mail: h25872968110xl@126.com
  • 基金资助:
    省级创业训练计划(S202310344003X);2023浙江省新苗人才计划(2023R410004)

Genome-wide analysis of the TCP gene family in Astragalus membranaceus (Fisch.) Bunge and its response to abiotic stress

MA Qiyanga(), HUANG Xuelianb,*()   

  1. a. The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou 310053, China
    b. School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou 310053, China
  • Received:2024-12-02 Online:2026-02-25 Published:2026-03-24

摘要:

本研究旨在鉴定和分析膜荚黄芪TCP基因家族,并揭示其对非生物胁迫的响应,为研究膜荚黄芪TCP基因在非生物胁迫中的功能提供理论依据。通过生物信息学方法对膜荚黄芪TCP基因及其编码的氨基酸序列进行系统分析,利用RNA-seq技术研究膜荚黄芪TCP基因在不同组织(根、茎和叶)中的表达模式,并通过实时荧光定量PCR(RT-qPCR)验证了5个代表性AmTCP基因在非生物胁迫(高温、干旱、盐胁迫)条件下的表达谱。结果表明,共鉴定出24个TCP基因且不均匀分布于膜荚黄芪的8条染色体上。24个AmTCP基因可分为Ⅰ类(PCF)和Ⅱ类(CYC/TB1和CIN)。同一亚家族蛋白具有高度相似的基序组成,大多数AmTCP基因缺乏内含子。片段重复在膜荚黄芪TCP基因家族进化中发挥了重要作用。此外,启动子区域分析发现多个光响应元件和激素响应元件。组织表达分析显示,AmTCP基因具有显著的组织表达特异性。在非生物胁迫下,5个代表性AmTCP基因的表达水平存在显著差异,其中AmTCP18和AmTCP19基因在多种胁迫条件下均表现出较高的表达水平。综上所述,AmTCP18和AmTCP19可能在膜荚黄芪对非生物胁迫的响应中发挥关键作用,本研究为膜荚黄芪TCP基因家族的进一步功能和进化研究奠定了基础。

关键词: 膜荚黄芪, TCP基因家族, 全基因组分析, 非生物胁迫

Abstract:

This study aimed to identify and characterize the TCP gene family in Astragalus membranaceus(Fisch.) Bunge and elucidate its role in abiotic stress responses, and provide a theoretical basis for investigating the functional role of TCP genes in Astragalus membranaceus(Fisch.) Bunge under abiotic stress conditions. A systematic analysis of the TCP genes in Astragalus membranaceus(Fisch.) Bunge and their encoded amino acid sequences was conducted using bioinformatics methods. RNA-seq technology was employed to investigate the expression patterns of TCP genes in different tissues (roots, stems, and leaves) of Astragalus membranaceus(Fisch.) Bunge. Additionally, the expression profiles of five representative AmTCP genes under abiotic stress conditions (high temperature, drought, and salt stress) were validated through real-time quantitative PCR (RT-qPCR). The results showed that a total of 24 TCP genes were identified and unevenly distributed on 8 chromosomes of Astragalus membranaceus(Fisch.) Bunge. The 24 AmTCP genes can be classified into Class Ⅰ (PCF) and Class Ⅱ (CYC/TB1 and CIN). Proteins within the same subfamily had highly similar motif compositions, and most AmTCP genes lack introns. Fragment duplication played an important role in the evolution of the TCP gene family in Astragalus membranaceus(Fisch.) Bunge. In addition, analysis of the promoter region revealed multiple light-responsive elements and hormone-responsive elements. Tissue expression analysis showed that the AmTCP genes had significant tissue expression specificity. Under abiotic stress, there were significant differences in the expression levels of five representative AmTCP genes, among which AmTCP18 and AmTCP19 genes showed higher expression levels under various stress conditions. In summary, AmTCP18 and AmTCP19 may play a key role in the response of Astragalus membranaceus(Fisch.) Bunge to abiotic stress. This study lays the foundation for further functional and evolutionary research on the TCP gene family of Astragalus membranaceus(Fisch.) Bunge.

Key words: Astragalus membranaceus (Fisch.) Bunge, TCP gene family, genome-wide analysis, abiotic stress

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