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植物研究 ›› 2022, Vol. 42 ›› Issue (2): 200-210.doi: 10.7525/j.issn.1673-5102.2022.02.005

• 分子生物学 • 上一篇    下一篇

青藏高原地区3种蒿属植物转录组比较分析

余静雅1,2, 夏铭泽1,2, 徐浩1,2, 张发起1()   

  1. 1.中国科学院西北高原生物研究所高原生物适应与进化重点实验室,西宁 810001
    2.中国科学院大学生命科学学院,北京 100049
  • 收稿日期:2020-10-08 出版日期:2022-03-20 发布日期:2022-02-22
  • 通讯作者: 张发起 E-mail:fqzhang@nwipb.cas.cn
  • 作者简介:余静雅(1995—),女,博士研究生,主要从事植物系统与进化研究。
  • 基金资助:
    第二次青藏高原综合科学考察研究(2019QZKK0502);青海省基础研究计划项目(2019-ZJ-7042)

Comparative Transcriptome Analysis of Three Artemisia Species in Qinghai Tibet Plateau

Jingya Yu1,2, Mingze Xia1,2, Hao Xu1,2, Faqi Zhang1()   

  1. 1.Key Laboratory of Adaptation and Evolution of Plateau Biota,Northwest Institute of Plateau Biology,Chinese Academy of Sciences,Xining 810001
    2.College of Life Sciences,University of Chinese Academy of Sciences,Beijing 100049
  • Received:2020-10-08 Online:2022-03-20 Published:2022-02-22
  • Contact: Faqi Zhang E-mail:fqzhang@nwipb.cas.cn
  • About author:Yu Jingya(1995—),female,doctoral student,major in plant systematic and evolution.
  • Supported by:
    Second Tibetan Plateau Scientific Expedition and Research(STEP) Program(2019QZKK0502);Basic Research Project of Qinghai Province(2019-ZJ-7042)

摘要:

米蒿(Artemisia dalai-lamae)、冷蒿(Artemisia frigida)和臭蒿(Artemisia hedinii)作为西北干旱半干旱地区常见植物,具有防风固沙、阻止草原退化、杀菌消炎和治疗多种疾病的功效。通过Illumina测序技术分别对3种蒿属植物进行转录组测序和分析,分别获得54 268 322,46 434 864和43 971 646条Clean reads,并对测序结果进行了SNP和可变剪接分析。在米蒿和冷蒿对比组(ADL vs AF)中筛选到6 107个差异基因,在米蒿和臭蒿对比组(ADL vs AH)中筛选到4 822个差异基因,在冷蒿和臭蒿对比组(AF vs AH)中筛选到3 755个差异基因。GO富集将差异基因注释到生物过程、细胞组成和分子功能这3个类别共47个条目。KEGG代谢通路分析将3个对比组的差异基因分别富集到198、198和197条通路。对每个对比组的前10个高表达差异基因进行了分析,并筛选出25个生物碱、萜类和类黄酮的活性成分可能相关的差异基因。本研究为蒿属植物的物种鉴定、抗逆性研究和资源利用提供一定的科学依据。

关键词: 蒿属, 转录组比较分析, SNP, 可变剪切

Abstract:

Artemisia dalai-lamaeArtemisia frigida and Artemisia hedinii, the common herbs in arid and semi-arid areas of Northwest China, have the effects of wind prevention and sand fixation, preventing grassland degradation, sterilization and anti-inflammatory, and treating a variety of diseases. The transcriptome of three Artemisia species were sequenced by Illumina method and then 54 268 322, 46 434 864 and 43 971 646 Clean reads were obtained, respectively. SNP and alternative splicing analyses were performed on the sequencing results. Differentially expressed genes were screened from the comparison groups of 6 107(ADL vs AF), 4 822(ADL vs AH) and 3 755(AF vs AH) respectively. Go enrichment annotated the differentially expressed genes into three categories: biological process, cell component and molecular function. KEGG enrichment annotated the differentially expressed genes into 198, 198 and 197 pathways respectively. The top ten high expressed genes in each group were analyzed. We screened out 25 differentially expressed genes related to the active components of alkaloids,terpenoids and flavonoid. This study provid a scientific basis for species identification, stress resistance research and resource utilization of Artemisia.

Key words: Artemisia, comparative transcriptome analysis, SNP, alternative splicing

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