Research articles

Genome-wide Identification and Tissue Expression Analysis of the TCP gene Family in Altingia chinensis

  • 王安邦,叶兴状,杨巧莹,刘美利,陈志云,张国防
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  • (1. College of Forestry, Fujian Agriculture and Forestry University,Fuzhou 350002, Fujian China; 2. College of Life Sciences, Fujian Agriculture and Forestry University,Fuzhou 350002, Fujian China; 3. Fujian Institute of Subtropical Botany / Fujian Key Laboratory of Physiology and Biochemistry for Subtropical Plant, Xiamen 361006, Fujian China; 4. Fujian Province Taining State-owned Forest Farm, Sanming 354400, Fujian China; 5. Weimin National Forest Farm of Shaowu, Nanping 354000, Fujian China)

Received date: 2025-01-02

  Accepted date: 2025-04-09

  Online published: 2025-09-08

Abstract

The TCP gene family plays a crucial regulatory role in leaf-shape development in plants. This paper aims to identify and analyze the AcTCPs gene family in Altingia chinensis, exploring their tissue expression pattern to provide a reference for understanding the expression and function of TCPs in this species. Utilizing the whole genome data of A. chinensis and bioinformatics methods, we identified the AcTCPs gene family and analyzed theirs gene structure, protein physicochemical properties, chromosome localization, subcellular localization, collinearity, cis-acting elements of promoters, and transcription expression patterns in different tissues. The results showed that 21 AcTCPs were obtained of the A. chinensis genome. All AcTCPs contain the TCP superfamily domain, with only AcTCP3 uniquely possessing the nitrilase superfamily domain. The AcTCPs can be classified into three categories: PCF (AcTCP1/2/3/4/7/8/9/11/12/17/20/21), CIN (AcTCP5/6/13/15/16/19) and CYC/TB1 (AcTCP10/14/18). The AcTCP proteins range from 197 to 554 amino acids in length. Subcellular localization analysis revealed that AcTCP3 is located at the cell membrane, while the others are localized in the nucleus, all of which are unstable hydrophilic proteins. The promoters of AcTCPs genes contain light-responsive elements, hormone-responsive elements, stress-responsive elements and growth and development-related elements. Transcriptomic expression analysis revealed that tissue specificity for AcTCPs, with AcTCP6, AcTCP7, and AcTCP16 showing significantly high expression in leaf-I (March), although most members of the same subfamily exhibited similar expression patterns. This study identified a total of 21 AcTCP members and highlighted three key potential genes–AcTCP16, AcTCP19 and AcTCP20 that are associated with leaf development in A. chinenesis. It is inferred that A. chinenesis TCPs play important roles in light response, plant growth and development, hormone signaling, and stress response. The findings provide a scientific basis for further studies on the genomic characteristics of the TCP gene family.

Cite this article

王安邦,叶兴状,杨巧莹,刘美利,陈志云,张国防 . Genome-wide Identification and Tissue Expression Analysis of the TCP gene Family in Altingia chinensis[J]. Subtropical Plant Science, 2025 , 54(3) : 249 -260 . DOI: 10.3969/j.issn.1009-7791.2025.03.002

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