ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (5): 17-25. doi: 10.7668/hbnxb.20191173

Special Issue: Cucumber Saline-alkali stress

• Crop Genetics·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Transcriptomics Analysis of the Mechanism of Exogenous H2S Regulating Cucumber in Response to Salt Stress

JIANG Jinglong1, LI Li2   

  1. 1. School of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong 723001, China;
    2. College of Chemical&Environment Science, Shaanxi University of Technology, Hanzhong 723001, China
  • Received:2020-07-02 Published:2020-10-28

Abstract: In order to verify the mechanism of hydrogen sulfide to regulate the plant response to salt stress, cucumber seedlings were used as materials and treated with Hoagland(CK), 200 mmol/L NaCl(T) and 200 mmol/L NaCl+15 mmol/L NaHS (the donor of H2S, S). The expression of transcriptome genes of cucumber roots were studied by using Illumina HiSeq high-throughput sequencing technology. A total of 365.35 Mb of Clean reads were obtained from 9 samples. Mapped reads was 315.74 Mb, and the percentage was 86.27%-88.64%. Analysis of differentially expressed genes revealed that T group had 1 168 genes up-regulated and 1 076 genes down-regulated compared with CK group, and S group had 435 genes up-regulated and 218 genes down-regulated compared with T group. The Gene Ontology (GO) enrichment analysis revealed that the differentially expressed genes were mainly concentrated in binding and catalytic activity in molecular functional classes; in biological process classes, they were mainly enriched in metabolic processes and cellular processes and single-organism process; Among cell components, the membrane and membrane part classes were mainly concentrated. KEGG enrichment analysis of the differentially expressed genes could be divided into 139, 75 and 127 pathway of 3 comparison groups, respectively. The differentially expressed genes in S group compared to the T group were mainly abundant during plant hormone signal transduction, protein processing in endoplasmic reticulum and photosynthesis pathway. Screening of 10 genes that might be related to H2S regulating cucumber response to salt stress:CSC1-like protein ERD4, nitrate reductase (NADH)-like, protein TIFY 10B-like, allene oxide cyclase, BTB/POZ and TAZ domain-containing protein 1-like, tricalbin-3-like, mitogen-activated protein kinase kinase 3-like, transcription factor bHLH18-like, IAA-amino acid hydrolase ILR1-like 4 and potassium channel AKT1. Studying the mechanism of H2S regulating cucumber response to salt stress provides theoretical data and reference basis for improving plant salt tolerance.

Key words: Cucumber, H2S, NaCl stress, GO analysis, KEGG analysis

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Cite this article

JIANG Jinglong, LI Li. Transcriptomics Analysis of the Mechanism of Exogenous H2S Regulating Cucumber in Response to Salt Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(5): 17-25. doi: 10.7668/hbnxb.20191173.

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