欢迎访问《植物研究》杂志官方网站,今天是 分享到:

植物研究 ›› 2022, Vol. 42 ›› Issue (3): 424-436.doi: 10.7525/j.issn.1673-5102.2022.03.012

• 分子生物学 • 上一篇    下一篇

萱草叶片响应低温胁迫的转录组分析

黄东梅, 陈颖, 白露, 倪迪安, 徐奕扬, 张志国, 秦巧平()   

  1. 上海应用技术大学生态技术与工程学院,上海 201418
  • 收稿日期:2020-12-18 出版日期:2022-05-20 发布日期:2022-05-20
  • 通讯作者: 秦巧平 E-mail:qinqp@sit.edu.cn
  • 作者简介:黄东梅(1997—),女,研究生,主要从事园林植物与种质创新研究。
  • 基金资助:
    上海市农委科技兴农重点项目(2019-02-08-00-08-F01107)

Transcriptome Analysis of Hemerocallis fulva Leaves Respond to Low Temperature Stress

Dongmei HUANG, Ying CHEN, Lu BAI, Di’an NI, Yiyang XU, Zhiguo ZHANG, Qiaoping QIN()   

  1. School of Ecological Technology and Engineering,Shanghai Institute of Technology,Shanghai 201418
  • Received:2020-12-18 Online:2022-05-20 Published:2022-05-20
  • Contact: Qiaoping QIN E-mail:qinqp@sit.edu.cn
  • About author:HUANG Dongmei(1997—),female,postgraduate,major in landscape plants and germplasm innovation.
  • Supported by:
    Science and Technology agriculture Project of Shanghai Agricultural Commission(2019-02-08-00-08-F01107)

摘要:

低温胁迫是萱草(Hemerocallis fulva)生长过程中经常会遭遇的一种非生物胁迫。比较了萱草叶片在低温处理(10、5、0 ℃)下转录组与对照(15 ℃)数据的差异,共筛选出差异表达基因2 457个,其中上调基因1 253个,下调基因1 204个。差异表达基因主要富集在细胞过程、代谢过程和催化活性等49个GO过程,代谢途径、次生代谢产物的生物合成、植物激素信号转导等42条KEGG代谢途径中。其中参与植物激素信号转导通路的差异表达基因发生了不同程度的变化,GH3.10基因上调至对照组的13.624倍,IAA1基因下调0.120倍;参与可溶性糖合成通路的差异基因发生了0.076~28.114倍不同程度的变化。随后对3个低温处理组共有的29个差异表达基因进行热图和网络调控分析,基于基因在网络调控中的位置,对ABCF5OFPsSWEETs等基因在冷应答的作用进行了分析。本研究结果为进一步挖掘萱草低温响应的关键基因及耐寒萱草种质开发、分子育种提供了一定的理论支撑。

关键词: 萱草, 低温胁迫, 转录组, 激素, 可溶性糖

Abstract:

Low temperature is a kind of abiotic stress in the growth process of Hemerocallis fulva. The transcriptome data of Hemerocallis fulva leaves under cold treatment groups (10, 5, 0 ℃) and control group (15℃) was compared, and a total of 2 457 DEGs were screened, including 1 253 up-regulated genes and 1 204 down-regulated genes. The results showed that differentially expressed genes(DEGs) were mainly concentrated in 49 GO processes such as cellular process, metabolic process and catalytic activity, and 42 KEGG metabolic pathways, including metabolic pathways, biosynthesis of secondary metabolites and plant hormone signal transduction. Among them, the DEGs involved in plant hormone signal transduction pathway changed in varying degrees, GH3.10 gene was increased to 13.624 times higher than the control group, IAA1 gene was down-regulated to 0.120 times; the DEGs involved in soluble sugar synthesis pathway also changed by 0.076-28.114 times. Then, 29 DEGs shared by treatment groups were analyzed by heat map and gene regulation networks. Based on the position of genes in gene regulation networks, the roles of ABCF5OFPs and SWEETs in response to cold were analyzed respectively. The results of this study provide a theoretical basis for further exploring the key genes of low temperature response, germplasm development and molecular breeding of Hemerocallis fulva.

Key words: Hemerocallis fulva, low temperature stress, transcriptome, hormone, soluble sugar

中图分类号: