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植物研究 ›› 2021, Vol. 41 ›› Issue (2): 294-301.doi: 10.7525/j.issn.1673-5102.2021.02.017

• 研究报告 • 上一篇    下一篇

响应内生菌侵染的两个地黄茉莉酸合成关键基因的克隆与表达分析

彭淑萍1, 董诚明1,2, 朱畇昊1,2()   

  1. 1.河南中医药大学药学院,郑州 450046
    2.呼吸疾病中医药防治省部共建协同创新中心,郑州 450046
  • 收稿日期:2020-01-14 出版日期:2021-03-20 发布日期:2021-01-05
  • 通讯作者: 朱畇昊 E-mail:guxinghan123@163.com
  • 作者简介:彭淑萍(1996—),女,研究生研究生,主要从事药用植物分子生物学研究。
  • 基金资助:
    国家自然科学基金项目(81603232);国家重点研发计划(2017YFC1702800)

Cloning and Expression Analysis of Two Key Genes of Jasmonic Acid Synthesis in Response to Endophytic Infection from Rehmannia glutinosa

Shu-Ping PENG1, Cheng-Ming DONG1,2, Yun-Hao ZHU1,2()   

  1. 1.School of Pharmacy,Henan University of Traditional Chinese Medicine,Zhengzhou 450046
    2.Co -construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases by Henan & Education Ministry of P. R. China,Zhengzhou 450046
  • Received:2020-01-14 Online:2021-03-20 Published:2021-01-05
  • Contact: Yun-Hao ZHU E-mail:guxinghan123@163.com
  • About author:Peng Shu-Ping(1996—),female,postgraduate,molecular biology of medicinal plants research.
  • Supported by:
    National Natural Science Foundation of China(81603232);National key research and development plan(2017YFC1702800)

摘要:

丙二烯氧化物合酶(allene oxide synthase,AOS)、12-氧代植二烯酸还原酶(12-oxophytodienoate reductase,OPR)基因是植物中茉莉酸合成关键基因。从地黄与内生真菌GG22互作转录组中筛选响应内生菌侵染的AOSOPR基因序列,设计特异引物,克隆RgAOSRgOPR基因的完整开放阅读框,并对该序列及其编码产物进行生物信息学分析,采用实时荧光定量PCR技术分析RgAOSRgOPR基因在不同组织及内生真菌GG22侵染前后的表达模式。RgAOS基因开放阅读框为1 626 bp,编码541个氨基酸,分子量为60.20 kD。RgOPR基因的开放阅读框为1 197 bp,编码398个氨基酸,分子量为44.07 kD。QPCR分析发现,RgAOS在根中表达量最高,花中最少,RgOPR在花和叶中的表达量较高。内生真菌GG22能诱导地黄中RgAOSRgOPR基因的表达。该研究成功从地黄中克隆了RgAOSRgOPR基因,为进一步研究地黄中茉莉酸类物质的生物活性及探索内生真菌对地黄次生代谢产物调节的分子机制奠定了基础。

关键词: 地黄, 丙二烯氧化物合酶, 12-氧代植二烯酸还原酶, 生物信息学分析, 表达分析

Abstract:

Allene oxide synthase(AOS) and 12-oxophytodienoate reductase(OPR) were the key genes of jasmonic acid biosynthesis in the plants. The genes of AOS and OPR responding to endophytic fungus infection were screened from the interaction transcriptome of Rehmannia glutinosa with endophytic fungus GG22. Specific primers were designed to the open reading frame of RgAOS and RgOPR. Bioinformatics analysis of the sequences and theirs encoded product were performed, and real-time fluorescent quantitative PCR was used to analyze the expression patterns of RgAOS and RgOPR in different tissues infection by endophytic fungus GG22. The open reading frame of RgAOS was 1 626 bp, encoding 541 amino acids with a molecular weight of 60.2 kD. The open reading frame of RgOPR was 1 197 bp, encoding 398 amino acids with a molecular weight of 44.07 kD. QPCR analysis showed that the expression of RgAOS was the highest in roots, the lowest in flowers, and the expression of RgOPR was higher in flowers and leaves, respectively. Endophytic fungus GG22 induced the expression of RgAOS and RgOPR in R.glutinosa. The RgAOS and RgOPR were successfully cloned from R.glutinosa, laying the foundation for further study on the biological activity of Jasmonic acid substances in R.glutinosa and claiming the molecular mechanism of endophytic fungi in the regulation of secondary metabolites of R.glutinosa.

Key words: allene oxide synthase, 12-oxophytodienoate reductase, bioinformatics analysis, expression analysis, Rehmannia glutinosa

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