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植物研究 ›› 2026, Vol. 46 ›› Issue (5): 851-865.doi: 10.7525/j.issn.1673-5102.2026.05.007

• 研究论文 • 上一篇    下一篇

酸枣WRKY转录因子家族鉴定及脱落酸介导类黄酮合成的关键基因筛选

董楚星1,2, 张梦圆1, 史鑫波1, 张岗2, 宋忠兴1, 王楠1, 焦红红1,3()   

  1. 1.陕西中医药大学陕西中药资源产业化省部共建协同创新中心,咸阳 712000
    2.陕西中医药大学药学院,咸阳 712000
    3.中国中医科学院中药资源中心道地药材品质保障与资源持续利用全国重点实验室,北京 100700
  • 收稿日期:2026-04-22 出版日期:2026-08-28 发布日期:2026-10-10
  • 通讯作者: 焦红红 E-mail:jhh211411@163.com
  • 作者简介:董楚星(2004—),男,本科生,主要从事药物制剂研究。
  • 基金资助:
    中央本级重大增减支项目名贵中药资源可持续利用能力建设项目(2060302);陕西省重点研发计划(2024CY-JJQ-41);陕西省重点研发计划(2025NC-YBXM-230);现代农业产业技术体系建设专项(CARS-21);陕西中药企业关键核心技术需求揭榜挂帅项目(2025SXZY-GJHX01)

Genome-wide Identification of WRKY Transcription Factors and Key Genes for Abscisic Acid-mediated Flavonoid Synthesis in Sour Jujube (Ziziphus jujuba var. spinosa)

Chuxing DONG1,2, Mengyuan ZHANG1, Xinbo SHI1, Gang ZHANG2, Zhongxing SONG1, Nan WANG1, Honghong JIAO1,3()   

  1. 1.Co -construction Collaborative Innovation Center for Chinese Medicine Resources Industrialization by Shaanxi & Ministry of Education,Shaanxi University of Chinese Medicine,Xianyang 712000
    2.College of Pharmacy,Shaanxi University of Chinese Medicine,Xianyang 712000
    3.State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs,National Resource Center for Chinese Materia Medica,China Academy of Chinese Medical Sciences,Beijing 100700
  • Received:2026-04-22 Online:2026-08-28 Published:2026-10-10
  • Contact: Honghong JIAO E-mail:jhh211411@163.com

摘要:

WRKY转录因子是植物类黄酮生物合成及生长发育的关键调控因子,但其在药用植物酸枣(Ziziphus jujuba var. spinosa)中的功能缺乏相关研究。本研究基于酸枣全基因组数据,采用生物信息学方法系统鉴定WRKY基因家族成员,并对其系统进化关系、染色体定位、保守结构域及启动子顺式作用元件进行分析。进一步通过外源脱落酸(abscisic acid,ABA)处理酸枣种子,结合类黄酮含量测定与基因表达谱分析,筛选与类黄酮积累显著相关的候选基因,并利用实时荧光定量PCR分析其在酸枣不同组织部位中的表达模式。结果表明:酸枣基因组中共鉴定出47个ZjWRKY基因,依据系统进化分析可分为Group Ⅰ、Group Ⅱ和Group Ⅲ共3个亚家族;ZjWRKY基因不均匀分布于酸枣11条染色体上,编码蛋白均含有保守的WRKYGQK结构域,主要定位于细胞核;89%的ZjWRKY基因启动子区含ABA响应元件(ABRE)。外源ABA可以促进萌发的酸枣种子中类黄酮的积累,且含量与12个ZjWRKY基因的表达模式相关;其中,与类黄酮含量相关的ZjWRKY10、ZjWRKY30及ZjWRKY45主要在酸枣种子、果肉中表达丰度较高,推测其可能协同调控酸枣果实和种子发育及ABA诱导的类黄酮生物合成。本研究结果为深入阐明ABA信号-WRKY转录因子-类黄酮合成调控网络提供了重要线索。

关键词: 酸枣, WRKY转录因子, 脱落酸, 类黄酮, 种子

Abstract:

WRKY transcription factors play important roles in flavonoid biosynthesis and plant growth and development; however, their functional roles in the medicinal plant sour jujube (Ziziphus jujuba var. spinosa) remain largely unexplored. In this study, we conducted a comprehensive genome-wide identification of the WRKY gene family in sour jujube using bioinformatics approaches. We systematically analyzed their phylogenetic relationships, chromosomal localization, conserved domains, and cis-acting elements in promoter regions. Furthermore, we performed exogenous abscisic acid(ABA) treatment on sour jujube seeds, combined with flavonoid content determination and gene expression analysis, to screen candidate genes significantly associated with flavonoid accumulation. The tissue-specific expression patterns of these candidate genes were subsequently validated by quantitative real-time PCR. A total of 47 ZjWRKY genes were identified in the sour jujube genome, which were classified into three subfamilies(Group Ⅰ, Group Ⅱ, and Group Ⅲ) based on phylogenetic analysis. The ZjWRKY genes were unevenly distributed across 11 chromosomes, and all encoded proteins contained the conserved WRKYGQK domain, predominantly localized in the nucleus. Notably, 89% of ZjWRKY genes contained ABA-responsive elements(ABREs) within their promoter regions. Exogenous ABA treatment significantly promoted flavonoid accumulation in germinated sour jujube seeds, and the flavonoid content was correlated with the expression patterns of 12 ZjWRKY genes. Among them, ZjWRKY10, ZjWRKY30, and ZjWRKY45 showed a strong correlation with flavonoid content and were predominantly and highly expressed in seeds and pulp tissues. These results suggest that the three ZjWRKY genes may act synergistically in regulating fruit and seed development as well as ABA-induced flavonoid biosynthesis in sour jujube. This study provides important clues for further elucidating the ABA signaling-WRKY transcription factor-flavonoid biosynthesis regulatory network.

Key words: Ziziphus jujuba var. spinosa, WRKY transcription factors, abscisic acid, flavonoids, seed

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