干旱区研究 ›› 2025, Vol. 42 ›› Issue (5): 885-894.doi: 10.13866/j.azr.2025.05.11 cstr: 32277.14.AZR.20250511

• 植物生态 • 上一篇    下一篇

基于RT-qPCR技术解析齿肋赤藓耐热基因在不同非生物胁迫下的表达模式

霍雯婷1(), 顾天麒1, 高梦宇1, 宋艳芳2, 李鸿彬1, 卓露1()   

  1. 1.石河子大学生命科学学院新疆植物药资源利用教育部重点实验室,绿洲城镇与山盆系统生态兵团重点实验室新疆 石河子 832000
    2.石河子卫生学校新疆 石河子 832000
  • 收稿日期:2025-01-10 修回日期:2025-03-26 出版日期:2025-05-15 发布日期:2025-10-22
  • 通讯作者: 卓露. E-mail: Luzhuo@shzu.edu.cn
  • 作者简介:霍雯婷(1997-),女,硕士研究生,主要从事荒漠藓类植物抗逆生理及分子生物学研究. E-mail: huowenting@stu.shzu.edu.cn
  • 基金资助:
    国家自然科学基金项目(32360097);2023年兵团发展专项-博士后专项项目(CZ00150102)

Analysis of the expression patterns of the heat-resistant gene of Syntrichia caninervis under different abiotic stresses based on RT-qPCR technology

HUO Wenting1(), GU Tianqi1, GAO Mengyu1, SONG Yanfang2, LI Hongbin1, ZHUO Lu1()   

  1. 1. College of Life Science, Shihezi University, Ministry of Education Key Laboratory of Xinjiang Phytomedicine Resource Utilization, Xinjiang Production and Construction Corps Key Laboratory of Oasis Town and Mountain-basin System Ecology, Shihezi 832000, Xinjiang, China
    2. Shihezi Health School, Shihezi 832000, Xinjiang, China
  • Received:2025-01-10 Revised:2025-03-26 Published:2025-05-15 Online:2025-10-22

摘要: 依托前期55 ℃高温胁迫下耐干苔藓齿肋赤藓的转录组数据,运用实时荧光定量聚合酶链式反应(Quantitative Real time Polymerase Chain Reaction,RT-qPCR)技术,探究9个高温差异表达基因(ScLEA14ScGSTF11ScHSP70-17ScHsfB4bScMYB117ScGLK1ScERF039ScERF016ScbHLH104)在高温、干旱-复水及NaCl胁迫下的表达特征,以此验证转录组测序(RNA sequencing,RNA-Seq)数据的可靠性,为后续齿肋赤藓抗逆基因功能验证提供理论支撑。结果显示:(1) 9个基因在高温胁迫下的表达趋势与RNA-Seq数据基本一致。(2) 在极端高温和干旱-复水胁迫时,9个基因均被不同程度诱导,其中3个基因在干旱24 h时诱导至表达峰值,8个基因在复水阶段诱导效果更为突出。(3) 在NaCl盐胁迫下,9个耐热相关基因均受盐诱导而上调表达,其中6个基因表现尤为显著。由此得出:ScLEA14ScMYB117ScERF016这3个基因在极端高温、干旱-复水和NaCl高盐胁迫下均显著诱导表达,可作为后续抗逆研究的候选基因。

关键词: 耐干苔藓, 齿肋赤藓, 高温胁迫, 转录组, 实时荧光定量PCR

Abstract:

Based on transcriptomic data of the desiccation-tolerant moss Syntrichia caninervis under prior 55 ℃ heat stress, this study employed real-time fluorescent quantitative PCR (RT-qPCR) to investigate the expression patterns of nine heat-responsive differentially expressed genes (ScLEA14, ScGSTF11, ScHSP70-17, ScHsfB4b, ScMYB117, ScGLK1, ScERF039, ScERF016, and ScbHLH104) under high temperature, drought-rehydration, and NaCl stress conditions. The aim was to validate the reliability of RNA-Seq data and provide theoretical support for subsequent functional studies on stress-resistant genes in S. caninervis. Results demonstrated that: (1) The expression profiles of all nine genes under high-temperature stress exhibited substantial concordance with RNA-Seq data, confirming the stability of transcriptomic sequencing. (2) Under extreme heat and drought-rehydration stresses, all genes were differentially induced, with three genes attaining peak expression levels following 24-hour drought treatment, while eight genes displayed more prominent transcriptional activation during the rehydration phase. (3) NaCl stress triggered significant upregulation of all nine thermotolerance-associated genes, with six genes demonstrating statistically robust induction. Thus, the results demonstrate that the three genes ScLEA14, ScMYB117, and ScERF016 are strongly induced under extreme high temperature, drought-rehydration, and NaCl-induced high salinity stress, highlighting their potential as key candidate genes for further investigation into stress resistance mechanisms.

Key words: desiccation moss, Syntrichia caninervis, high temperaturestress, transcriptome, RT-qPCR