Biotechnology Bulletin ›› 2024, Vol. 40 ›› Issue (11): 214-226.doi: 10.13560/j.cnki.biotech.bull.1985.2024-0115

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Genome-wide Identification and Analysis of the TCP Gene Family in Populus yunnanensis

CHEN Zhi-hua1(), QIAO Zhen-sheng1, LI Jia-qi1, ZHANG Xiao-lin1, MA Shao-jie1, HE Cheng-zhong1,2, ZONG Dan1,2()   

  1. 1. Key Laboratory for Forest Genetic and Tree Improvement & Propagation in Universities of Yunnan Province, Southwest Forestry University, Kunming 650224
    2. Key Laboratory for Forestry Resources Conservation and Utilization in the Southwest Mountains of China, Ministry of Education, Southwest Forestry University, Kunming 650224
  • Received:2024-01-31 Online:2024-11-26 Published:2024-12-19
  • Contact: ZONG Dan E-mail:chzhhua1228@163.com;skyzd907@swfu.edu.cn

Abstract:

【Objective】 The identification of the Populus yunnanensis TCP gene family may provide a theoretical basis for the study of TCP gene function and genetic improvement. 【Method】 Based on the whole genome data of P. yunnanensis, the TCP gene family was identified by BLAST, the physical and chemical properties, gene structure, chromosome distribution, phylogeny, promoter analysis and codon characteristics of the members in this family were analyzed by bioinformatics. The expression of the subfamily of TCP gene family, CYC/TB1 gene in different tissues of P. yunnanensis was studied by RT-qPCR. 【Result】 A total of 38 TCP genes were identified in P. yunnanensis, and they were divided into three subfamilies: PCF, CYC/TB1 and CIN. The motif and gene structure of TCP family members of the same evolutionary branch were highly consistent, while there was some diversity among the different branches. The promoter region of TCP gene family was rich in cis-acting elements of growth, hormone and stress response. There were 23 and 37 TCP genes on the chromosomes of P. yunnanensis, respectively, which were found to be collinear with Arabidopsis thaliana and Populus trichocarpa. The codon bias analysis showed that most members ended in A and T(U), and the natural selection had a strong influence on the codon bias. The expressions of four genes in CYC/TB1 subfamily were significantly higher in lateral buds than in other tissues, these genes may play an important role in the formation and development of lateral buds in P. yunnanensis. 【Conclusion】 The results showed that the TCP family members of P. yunnanensis played an important role in the growth of lateral buds of P. yunnanensis, which provides a theoretical basis for the analysis of TCP gene function and regulation network in P. yunnanensis.

Key words: Populus yunnanensis, TCP gene, lateral bud, codon, tissue specificity