Comprehensive Genomic Analysis of Trihelix Family in Tea Plant (Camellia sinensis) and Their Putative Roles in Osmotic Stress
文献类型： 外文期刊
作者： Lang, Zhuoliang 1 ; Xu, Zelong 2 ; Li, Linying 2 ; He, Yuqing 2 ; Zhao, Yao 2 ; Zhang, Chi 2 ; Hong, Gaojie 1 ; Zhang, Xueying 2 ;
作者机构： 1.Zhejiang A&F Univ, Coll Tea Sci & Tea Culture, Hangzhou 311300, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, State Key Lab Managing Biot & Chem Threats Qual &, Coll Adv Agr Sci, Hangzhou 310021, Peoples R China
3.Zhejiang A&F Univ, Coll Adv Agr Sci, Hangzhou 311300, Peoples R China
关键词： C. sinensis; expression profile; phylogenetic analysis; trihelix family (TH); osmotic stress
期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 1 期
页码：
收录情况： SCI
摘要： In plants, Trihelix transcription factors are responsible for regulating growth, development, and reaction to various abiotic stresses. However, their functions in tea plants are not yet fully understood. This study identified a total of 40 complete Trihelix genes in the tea plant genome, which are classified into five clades: GT-1 (5 genes), GT-2 (8 genes), GT gamma (2 genes), SH4 (7 genes), and SIP1 (18 genes). The same subfamily exhibits similar gene structures and functional domains. Chromosomal mapping analysis revealed that chromosome 2 has the most significant number of trihelix family members. Promoter analysis identified cis-acting elements in C. sinensis trihelix (CsTH), indicating their potential to respond to various phytohormones and stresses. The expression analysis of eight representative CsTH genes from four subfamilies showed that all CsTHs were expressed in more tissues, and three CsTHs were significantly induced under ABA, NaCl, and drought stress. This suggests that CsTHs plays an essential role in tea plant growth, development, and response to osmotic stress. Furthermore, yeast strains have preliminarily proven that CsTH28, CsTH36, and CsTH39 can confer salt and drought tolerance. Our study provides insights into the phylogenetic relationships and functions of the trihelix transcription factors in tea plants. It also presents new candidate genes for stress-tolerance breeding.
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