浙江农业学报 ›› 2021, Vol. 33 ›› Issue (8): 1445-1460.DOI: 10.3969/j.issn.1004-1524.2021.08.12

• 园艺科学 • 上一篇    下一篇

萱草根茎低温胁迫转录组分析

黄长兵1,2(), 程培蕾2, 杨绍宗3, 张焕朝1,*(), 姜正之3, 金立敏2   

  1. 1.南京林业大学 南方现代林业协同创新中心/林学院,江苏 南京 210037
    2.苏州农业职业技术学院 园艺科技学院,江苏 苏州 215008
    3.苏州市华冠园创园艺科技有限公司,江苏 苏州 215557
  • 收稿日期:2020-10-11 出版日期:2021-08-25 发布日期:2021-08-27
  • 通讯作者: 张焕朝
  • 作者简介:*张焕朝,E-mail: hczhang@njfu.edu.cn
    黄长兵(1979—),男,安徽六安人,硕士,副研究员,从事萱草抗寒性品种选育与冷胁迫下miRNA表达研究。E-mail: cbhuang@szai.edu.cn
  • 基金资助:
    江苏省高等学校自然科学研究(19KJB210017);苏州市科技计划(SNG2018053);江苏现代农业产业技术体系(JATS〔2018〕232)

Transcriptome analysis of Hemerocallis fulva under low temperature stress

HUANG Changbing1,2(), CHENG Peilei2, YANG Shaozong3, ZHANG Huanchao1,*(), JIANG Zhengzhi3, JIN Limin2   

  1. 1. Co-Innovation Center for the Sustainable Forestry in Southern China/ College of Forestry, Nanjing Forestry University, Nanjing 210037, China
    2. College of Horticulture, Suzhou Polytechnic Institute of Agriculture, Suzhou 215008, China
    3. Suzhou Huaguan Garden Creative Horticulture Technology Co., Ltd., 215557, China
  • Received:2020-10-11 Online:2021-08-25 Published:2021-08-27
  • Contact: ZHANG Huanchao

摘要:

低温胁迫是萱草育种和生产中最严重的非生物胁迫之一。该研究以耐冷型和冷敏感型萱草低温处理前后的根茎为材料,利用转录组测序(RNA-seq)技术,比较了耐冷型和冷敏感型萱草在低温胁迫下的基因表达差异。结果表明,4个样品获得的高质量clean reads均大于35 880 734条;低温处理后,耐冷型萱草差异表达基因数量多于冷敏感型,差异表达基因主要富集于次级代谢产物等相关途径,Ca2+信号通路基因、MAPKs信号通路基因、转录因子和热激蛋白基因表达在2种萱草中表现出不同的变化,可能导致2种萱草在低温胁迫中的不同反应。qRT-PCR验证结果显示,差异基因的表达变化趋势与RNA-seq结果一致。该研究表明Ca2+信号通路基因、MAPKs信号通路基因在萱草响应低温胁迫过程中发挥着重要作用。

关键词: 萱草, 转录组, 差异表达基因, 低温胁迫

Abstract:

Low temperature stress is one of the most serious abiotic stresses in Hemerocallis fulva breeding and production. In this study, the rhizomes of cold-tolerant and cold-sensitive H. fulva before and after low temperature treatment were used as materials, and the gene expression differences of cold-tolerant and cold-sensitive H. fulva under low temperature stress were compared using transcriptome sequencing (RNA-seq) technology. The results were as follows: More than 35 880 734 high-quality clean reads were obtained from all four samples; After low temperature treatment, the number of differentially expressed genes (DEGs) of cold-tolerant hemerocallis was higher than that of cold sensitive type, and the DEGs were mainly concentrated in secondary metabolites and other related pathways; The expression trends of Ca2+ signaling pathway genes, MAPKs signaling pathway genes, transcription factors, and heat shock protein genes showed different changes in the two Hemerocallis species, which might lead to different responses to low temperature stress. qRT-PCR results showed that the trends of DEGs expression were consistent with those of RNA-seq. These results indicated that Ca2+ signaling pathway genes and MAPKs signaling pathway genes played important role in H. fulva response to low temperature stress.

Key words: Hemerocallis fulva, transcriptome, differentially expressed genes, low temperature stress

中图分类号: