Acta Agriculturae Zhejiangensis ›› 2021, Vol. 33 ›› Issue (8): 1445-1460.DOI: 10.3969/j.issn.1004-1524.2021.08.12

• Horticultural Science • Previous Articles     Next Articles

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

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

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