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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (3): 111-118.doi: 10.11924/j.issn.1000-6850.casb2022-0235

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The Plantlets of Medicago polymorpha L. and Medicago sativa L. Under Salt Stress: Transcriptome Analysis and Salt Tolerance Gene Screening

HONG Senrong1,2,3,4(), ZHU Yingying1, LI Ziying1, HU Mingyan1, OUYANG Kehui5()   

  1. 1 College of Life Sciences, Shangrao Normal University, Shangrao, Jiangxi 334001
    2 Shangrao Agricultural Technology Innovation Research Institute, Shangrao, Jiangxi 334001
    3 Key Laboratory of Protection and Utilization of Medicinal and Edible Plant Resources in Shangrao City, Shangrao, Jiangxi 334001
    4 Shangrao Key Laboratory of Germplasm Conservation and Utilization of Potato and Taro Crops, Shangrao, Jiangxi 334001
    5 College of Animal Science and Technology, Jiangxi Agricultural University, Nanchang 330045
  • Received:2022-04-01 Revised:2022-06-15 Online:2023-01-25 Published:2023-02-01

Abstract:

In order to screen the salt tolerance genes of Medicago polymorpha L. and Medicago sativa L., the plantlets of Medicago polymorpha L. (JHC) and Medicago sativa L. (ZHMX) under salt stress were used for transcriptome analysis. The results showed that the number of differential genes between JHC group and ZHMX group was 26722. 15850 genes were down regulated and 10872 genes were up regulated in JHC group vs ZHMX group. Pathways with significant enrichment of KEGG gene in JHC group and ZHMX group included ribosome, photosynthesis antenna protein, glycolysis/gluconeogenesis, photosynthesis, phenylpropanoid biosynthesis, etc. Salt tolerance genes in JHC group included basic leucine zipper 43, NAC transcription factor 47, ABC transporter A family member 7, late embryogenesis abundant protein 2, ethylene responsive transcription factor ERF110, etc. The salt tolerance genes in ZHMX group included WRKY transcription factor, protein TIFY 8, transcription factor MYB13, nuclear transport factor 2A, low temperature and salt responsive protein, etc. The results of this experiment could provide a theoretical basis for understanding the molecular mechanism of salt tolerance of Medicago polymorpha L. and Medicago sativa L. and breeding new salt tolerant varieties of Medicago polymorpha L. and Medicago sativa L..

Key words: salt stress, Medicago polymorpha L., Medicago sativa L., plantlet, transcriptome analysis, salt tolerance gene