Biotechnology Bulletin ›› 2024, Vol. 40 ›› Issue (12): 182-192.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0401

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Identification of Aux/IAA Gene Family in Corydalis hendersonii Hemsl. and Analysis on Their Expression Pattern under UVB Treatment

LIANG Jia-lin1(), ZHAO Shuang1, LI Xing-er1, ZHAO Cheng-zhou2, LI Ping1()   

  1. 1. College of Eco-environmental Engineering, Qinghai University, Xining 810016
    2. Tibetan Medicine Research Center, College of Tibetan Medicine, Qinghai University, Xining 810016
  • Received:2024-04-26 Online:2024-12-26 Published:2025-01-15
  • Contact: LI Ping E-mail:2455352154@qq.com;liping2015@qhu.edu.cn

Abstract:

【Objective】 To identify the Aux/IAA gene family in Corydalis hendersonii, and to provide a theoretical basis for the study of the function of C. hendersonii Aux/IAA genes and their resistances to adverse stresses.【Method】Based on the full-length transcriptome data of C. hendersonii, the members of the Aux/IAAChAux-IAA)gene family were identified and analyzed, and their proteins'physicochemical properties, phylogenetic tree, gene structure, protein tertiary structure, and protein interaction relationships were analyzed. In addition, C. Hendersonii was treated with UV-B at different times(0.5 h and 48 h)to detect the expression patterns of the ChAux/IAA gene family. 【Result】The ChAux/IAA gene family of C. hendersonii comprises a total of 20 members, most of which are located in the cell nucleus, with a minority found in chloroplasts, mitochondria, and cell walls. The proteins encoded by the ChAux/IAA gene family are hydrophilic. The presence of light-responsive elements in the cis-acting elements of the ChAux/IAA gene family suggests that this gene family may be involved in plant growth and development and in resisting ultraviolet stress. Analysis via RT-qPCR revealed that under UVB treatment, the expressions of all 20 ChAux/IAA members increased compared to the control group, with ChIAA2, ChIAA3, ChIAA4, ChIAA10, ChIAA13 and ChIAA21 showing a more significant increase in expression. This indicates that the ChAux/IAA gene family plays an important role in the plant's resistance to ultraviolet stress. 【Conclusion】A total of 20 ChAux/IAA gene family members are identified, and the ChAux/IAA gene family plays an important role in UV-B stress.

Key words: Corydalis hendersonii Hemsl., Aux/IAA gene family, UV-B stress, transcriptome, bioinformatics, analysis on gene expression