植物研究 ›› 2025, Vol. 45 ›› Issue (5): 745-754.doi: 10.7525/j.issn.1673-5102.2025.05.009

• 研究论文 • 上一篇    下一篇

水稻OsBBTIs基因家族鉴定及在非生物胁迫下的表达分析

卢禹彤, 刘博妍, 车仁祥, 张玉坤, 朱凤金, 蓝兴国()   

  1. 东北盐碱植被恢复与重建教育部重点实验室(东北林业大学),哈尔滨 150040
  • 收稿日期:2025-02-13 出版日期:2025-09-20 发布日期:2025-09-28
  • 通讯作者: 蓝兴国 E-mail:lanxingguo@126.com
  • 作者简介:卢禹彤(2003—),女,本科生,主要从事植物逆境生物学研究。
  • 基金资助:
    黑龙江省大学生创新创业训练计划项目(DC-2024267);国家自然科学基金面上项目(31870300)

Identification of OsBBTIs Gene Family in Rice and Its Expression Analysis under Abiotic Stress

Yutong LU, Boyan LIU, Renxiang CHE, Yukun ZHANG, Fengjin ZHU, Xingguo LAN()   

  1. Key Laboratory of Saline-Alkali Vegetation Restoration and Reconstruction-Ministry of Education(Northeast Forestry University),Harbin 150040
  • Received:2025-02-13 Online:2025-09-20 Published:2025-09-28
  • Contact: Xingguo LAN E-mail:lanxingguo@126.com

摘要:

Bowman-Birk型胰蛋白酶抑制剂(Bowman-Birk type trypsin inhibitor,BBTI)是植物中广泛分布的一类胰蛋白酶抑制剂,在植物抵御胁迫过程中发挥重要作用。该研究利用生物信息学方法在基因组水平上鉴定出11个水稻(Oryza sativaBBTIs基因家族成员,其中,10个OsBBTIs基因成簇聚集于1号染色体前端,而另外1个OsBBTI13基因定位于3号染色体。OsBBTIs蛋白具有N端信号肽和1~3个典型保守的Bowman-Birk型结构域。OsBBTIs基因的启动子区具有响应茉莉酸和脱落酸及非生物胁迫应激反应相关响应元件。转录组数据显示,所有OsBBTIs基因表达能够被茉莉酸诱导,多数OsBBTIs基因表达可以响应非生物胁迫。利用qRT-PCR检测NaHCO3和NaCl胁迫下水稻OsBBTIs基因表达水平,结果显示,盐碱胁迫显著诱导OsBBTIs基因表达。该研究可为进一步研究OsBBTIs蛋白在非生物胁迫中的功能奠定基础。

关键词: 水稻, OsBBTIs基因, Bowman-Birk型结构域, 非生物胁迫, 表达分析

Abstract:

Bowman-Birk trypsin inhibitor(BBTI) is a widely distributed trypsin inhibitor in plants, which plays an important role in the process of plant resistance to the stresses. In this study, 11 rice BBTIs gene family members were identified at the genome level by bioinformatics methods, among which 10 OsBBTI genes were clustered at the front of chromosome 1, and OsBBTI13 gene was located on chromosome 3. OsBBTIs protein had N-terminal signal peptide and contained 1-3 typical conserved Bowman-Birk type domains. The promoter region of OsBBTIs gene had response elements related to plant hormones jasmonic acid, abscisic acid and the abiotic stresses. Transcriptome data showed that all OsBBTIs gene can be induced by jasmonic acid, and most OsBBTI genes can be expressed in response to the abiotic stresses. qRT-PCR was used to analyze the expression level of OsBBTIs gene under NaHCO3 and NaCl stresses, the results showed that the expression level of OsBBTIs gene increased under the saline-alkali stresses. This study laid a foundation for further study on the biological function of OsBBTIs proteins in abiotic stress.

Key words: Oryza sativa, OsBBTIs, BowB domain, abiotic stress, expression analysis

中图分类号: