生物技术通报 ›› 2025, Vol. 41 ›› Issue (1): 198-209.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0596

• 研究报告 • 上一篇    下一篇

芦笋DUF247基因家族成员鉴定及表达分析

李云宾1(), 黎玉萍1, 成钦1, 林春1,2, 毛自朝1,2, 刘正杰1,2()   

  1. 1.云南农业大学农学与生物技术学院,昆明 650201
    2.云南省作物生产与智慧农业重点实验室,昆明 650201
  • 收稿日期:2024-06-21 出版日期:2025-01-26 发布日期:2025-01-22
  • 通讯作者: 刘正杰,男,博士,副教授,研究方向:植物功能基因组学;E-mail: 2013045@ynau.edu.cn
  • 作者简介:李云宾,男,博士研究生,研究方向:基因挖掘与功能;E-mail: 2652576980@qq.com
  • 基金资助:
    国家自然科学基金项目(32360089);云南省基础研究计划面上项目(202201AT070254)

Identification and Expression Analysis of the Members of the Asparagus officinalis DUF247 Gene Family

LI Yun-bin1(), LI Yu-ping1, CHENG Qin1, LIN Chun1,2, MAO Zi-chao1,2, LIU Zheng-jie1,2()   

  1. 1. College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming 650201
    2. The Key Laboratory for Crop Production and Smart Agriculture of Yunnan Province, Kunming 650201
  • Received:2024-06-21 Published:2025-01-26 Online:2025-01-22

摘要:

【目的】对芦笋全基因组DUF247家族进行鉴定与分析,为该基因家族特别是AoSOFF的性别决定的分子功能研究奠定基础。【方法】利用生物信息学方法对芦笋中的DUF247基因家族成员进行鉴定,开展其各成员编码蛋白理化性质、聚类、蛋白保守结构域、启动子中顺式作用元件及表达模式分析;利用实时定量PCR(RT-qPCR)和组织原位杂交技术验证芦笋性别决定基因AoSOFF的表达模式。【结果】芦笋中鉴定出24个DUF247基因家族成员,它们不均匀地分布在7条染色体上,且在不同器官中呈现差异表达。该家族成员编码蛋白的理化性质如氨基酸组成、分子量、理论等电点、不稳定系数和脂肪族系数等都存在差异。RT-qPCR和组织原位杂交结果表明,DUF247基因家族成员之一AoSOFF在芦笋雄花无性别分化早期的雌蕊、雄蕊以及花冠中均有较高表达,但在性别分化早期开始降低表达;在两性花中的表达量较低;而在雌性芦笋各组织中表达极低或检测不到,说明AoSOFF在雄性芦笋中特异性表达,与芦笋性别决定中的雌性抑制功能密切相关。【结论】芦笋DUF247家族成员具有明显的保守性,在芦笋不同性别的不同组织中的表达模式存在显著差异,特别是AoSOFF是一个雄性专一性基因,其同源基因参与植物的自交亲和调控,预示其以自交不亲和类似的反应导致雌性发育的抑制。

关键词: 芦笋, DUF247, AoSOFF, 性别分化, 雄性专一性, 雌性抑制, 原位杂交

Abstract:

【Objective】To establish a foundation for the molecular functional study of this gene family, particularly AoSOFF's role in sex determination, a comprehensive identification and analysis of the A. officinalis DUF247 family was conducted.【Method】The bioinformatics methods were used to identify the members of the DUF247 gene family in A. officinalis, and conducted analyses on their encoded protein physicochemical properties, clustering, protein conserved domains, cis-acting elements in the promoter, and expression patterns. Real-time quantitative PCR(RT-qPCR)and tissue in situ hybridization were used to validate the expression pattern of the A. officinalis sex determination gene AoSOFF.【Result】The 24 members of the DUF247 family were unevenly distributed on 7 chromosomes of A. officinalis, and showed differential expressions in various organs. The encoded proteins of these family members had differences in their physicochemical properties, including amino acid composition, molecular weight, theoretical isoelectric point, instability index, and aliphatic index. RT-qPCR and tissue in situ hybridization results demonstrated that AoSOFF had high expressions in the pistil, stamen, and corolla of male flowers during the early stage of sex differentiation but decreased its expression as sex differentiation progressed. Its expression in hermaphrodite flowers was low, and extremely low or undetectable in the female flowers, indicating that AoSOFF had male-specific expression in male asparagus, which was closely related to its female inhibition function in A. officinalis sex determination.【Conclusion】The members of the A. officinalis DUF247 family have obvious conservation and exhibit significantly different expression patterns in different tissues of A. officinalis of different sexes. In particular, AoSOFF is a male-specific gene, and its homologs are involved in regulating plant self-incompatibility, suggesting that its similar reaction to self-incompatibility may lead to the inhibition of female development.

Key words: Asparagus officinalis, DUF247, AoSOFF, sex differentiation, male specificity, female inhibition, in situ hybridization