Genome-Wide Identification of the Trihelix Transcription Factor Family and Functional Analysis of ZmTHX15 in Maize
文献类型： 外文期刊
作者： Cao, Yanyong 1 ; Cheng, Zeqiang 1 ; Sun, Xinyan 1 ; Zhu, Meichen 1 ; Yue, Ling 2 ; Liu, Hui 2 ; Wu, Xiaolin 2 ; Zhang, Jinghua 2 ; Duan, Canxing 3 ;
作者机构： 1.Henan Acad Agr Sci, Inst Cereal Crops, Shennong Lab, Zhengzhou 450002, Peoples R China
2.Henan Agr Univ, Coll Life Sci, Natl Key Lab Wheat & Maize Crop Sci, Zhengzhou 450046, Peoples R China
3.Chinese Acad Agr Sci, Inst Crop Sci, Key Lab Grain Crop Genet Resources Evaluat & Utili, Beijing 100081, Peoples R China
关键词：
drought stress; gene expression; cis-acting elements;
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）
ISSN： 1661-6596
年卷期： 2024 年 25 卷 24 期
页码：
收录情况： SCI
摘要： The trihelix transcription factor, which is a plant-specific family, play a critical role in plant growth and development and stress responses. Drought is the main limiting factor affecting yield of maize (Zea mays). However, the identification and characterization of this gene family in maize and its biological functions in response to drought stress have not been reported. Here, 46 Zea mays trihelix genes (ZmTHXs) were identified in the genome. Phylogenetic analysis of the ZmTHXs revealed that the genes were clustered into five subfamilies: GT-1, GT-2, GT gamma, SH4, and SIP1. Chromosomal localization analysis showed that the 46 ZmTHXs were unevenly distributed across 10 chromosomes in maize. Cis-acting elements related to abiotic stress in ZmTHXs were found. Most ZmTHXs genes showed significant changes in expression levels under drought treatment. In addition, ZmTHX15-overexpressing Arabidopsis exhibited stronger drought tolerance with less secondary oxidative damage and higher photosynthetic rate. These findings could serve as a basis for future studies on the roles of ZmTHXs and the potential genetic markers for breeding stress-resistant and high-yielding maize varieties.
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