Genome-Wide Identification and Expression Analysis of the TGA Gene Family in Banana (Musa nana Lour.) Under Various Nitrogen Conditions

作者：Bencheng Zhang, Wei Wang, Can Wang, Bingyu Cai, Junting Feng, Dengbo Zhou, Yufeng Chen, Miaoyi Zhang, Dengfeng Qi, Zhuo Wang, Yongzan Wei, Jianghui Xie · 发表于：International Journal of Molecular Sciences · 年份：2025 · DOI：10.3390/ijms26052168 · 被引用次数：3 · 研究领域：Plant Molecular Biology Research、Genomics and Phylogenetic Studies、Phytoplasmas and Hemiptera pathogens

The TGA (TGACG motif-binding factor) transcription factors are integral to root growth and development, and are pivotal in mediating plant responses to abiotic stresses. Nonetheless, their role in the nutrient absorption processes of banana plants has not been extensively investigated. This research conducted a comprehensive analysis of the MaTGA gene family, emphasizing their physicochemical characteristics, phylogenetic relationships, gene duplication events, promoter cis-regulatory elements and protein interaction networks. Furthermore, this study investigated the expression patterns of MaTGA family members under varying nitrogen conditions. A total of 18 MaTGA members were identified within the banana genome, each encoding proteins characterized by the presence of bZIP and DOG domains. These genes exhibited an uneven distribution across eight chromosomes. Phylogenetic analysis further classified the MaTGA family into four distinct subgroups (I–IV), consisting of three, seven, three, and five members, respectively. An analysis of promoter cis-elements indicated that over 50% of the MaTGA gene family members contain hormone-responsive elements associated with abscisic acid (ABRE), ethylene (ERE), and salicylic acid (SARE), in addition to stress-responsive elements related to drought (MBS) and low temperature (LTR). Regarding gene expression, MaTGA7, MaTGA8, and MaTGA15 exhibited significantly elevated expression levels in the leaves and roots relative to other tissues. Unde...