Tea Research Institute, Guangdong Academy of Agricultural Sciences & Guangdong Provincial Key Laboratory of Tea Plant Resources Innovation and Utilization, Guangzhou 510640, China.
College of Life Sciences, Longyan University, Longyan 361000, China.
J Agric Food Chem. 2024 Nov 13;72(45):24989-25000. doi: 10.1021/acs.jafc.4c06725. Epub 2024 Oct 19.
Basic leucine zipper (bZIP) transcription factors play crucial roles in various biological processes and responses to environmental stresses. However, the functions of the family in tea plants remain largely unexplored. Here, we identified 74 genes in tea plants () and classified them into 12 phylogenetic groups, supported by analyses of conserved motifs and gene structures. Cis-element analysis provided insights into the potential roles of genes in phytohormone signaling and stress responses. Tissue-specific expression analysis demonstrated differential expression profiles of genes, suggesting their tissue- and stage-specific functions. Additionally, varying expression levels under different abiotic stresses indicated functional divergence of the family during the long-term evolution. Notably, were identified as positive regulators of drought and salt stress responses but negative regulators in response to pathogen infection, and CsbZIP42 could interact with CsbZIP3 and CsbZIP6 in regulating these environmental stresses. This study provides valuable information on potential applications for improving stress tolerance and overall plant health of tea plants.
基本亮氨酸拉链（bZIP）转录因子在各种生物过程和环境胁迫反应中发挥着关键作用。然而， 家族在茶树中的功能在很大程度上仍未被探索。在这里，我们在茶树中鉴定了 74 个基因（），并通过保守基序和基因结构分析将它们分为 12 个系统发育群。顺式元件分析提供了对 基因在植物激素信号转导和应激反应中的潜在作用的深入了解。组织特异性表达分析显示了 基因的差异表达谱，表明它们具有组织和发育阶段特异性的功能。此外，不同非生物胁迫下的表达水平变化表明 家族在长期进化过程中发生了功能分化。值得注意的是， 被鉴定为干旱和盐胁迫反应的正调节剂，但在病原体感染时为负调节剂，并且 CsbZIP42 可以与 CsbZIP3 和 CsbZIP6 相互作用来调节这些环境胁迫。本研究为提高茶树的胁迫耐受性和整体植物健康提供了有价值的信息。
