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Acta Horticulturae Sinica ›› 2026, Vol. 53 ›› Issue (1): 159-173.doi: 10.16420/j.issn.0513-353x.2024-0860

• Genetic & Breeding·Germplasm Resources·Molecular Biology • Previous Articles     Next Articles

Identification of the DREB Gene Family in Polygonatum cyrtonema and Analysis of Its Response to Salt Stress

WANG Yanqiu1, BAN Jingjie1, ZENG Yuhan1, LAI Chunwang1, HUANG Xiaoling1, ZHOU Jianjin2, WAN Kui1, LAI Zhongxiong1, LIN Yuling1,*()   

  1. 1 Institute of Horticultural BiotechnologyFujian Agriculture and Forestry University, Fuzhou 350002, China
    2 Sanming Agricultural science Research InstituteSanming, Fujian 365051, China
  • Received:2025-03-09 Revised:2025-10-24 Online:2026-01-25 Published:2026-01-26
  • Contact: LIN Yuling

Abstract:

To investigate the function of DREB(dehydration responsive element binding)gene family in Polygonatum cyrtonema in this study. The DREB family members were identified based on data including the full-length transcriptome and the transcriptome of different tissues and organs,and their protein physicochemical properties,phylogenetic characteristics,conserved motifs and protein structure were analyzed. The expression levels in different organs,salt stress and PEG-6000 simulated drought stress were analyzed by combining FPKM values and qRT-PCR. The subcellular localization of PcDREB10 was studied by Agrobacterium-mediated transformation of onion. The hairy roots of P. cyrtonema were induced by Agrobacterium rhizogenes,and the expression levels of PcDREB10/12/27 after overexpression of PcDREB10 under salt stress were analyzed by qRT-PCR. In this study,35 DREB family members were identified,named as PcDREB1-PcDREB35,all of which are hydrophilic proteins with low stability. The expression levels of PcDREB family members are inconsistent in different organs,with tissue specificity,and the expression levels are different under salt stress and drought stress. Subcellular localization results showed that PcDREB10 was located in the nucleus. After overexpression of PcDREB10 mediated by Agrobacterium rhizogenes,the expression of PcDREB10/27 were up-regulated while the expression of PcDREB12 was down-regulated in roots treated with high salt solution,indicating that PcDREB10/12/27 may play different roles in the process of P. cyrtonema resisting salt stress.

Key words: Polygonatum cyrtonema, DREB, gene family identification, salt stress, drought stress, expression analysis