Jiang Wenbin, Wu Mengyang, Fan Jinjuan, Lu Changhao, Dong Wenmei, Chen Wenlong, Chen Zhengwu, Dai Xinlong, He Yingqin, Niu Suzhen
College of Tea Science, Guizhou University, Guiyang, Guizhou 550025, People's Republic of China.
Guizhou Provincial Key Laboratory for Agricultural Pest Management of the Mountainous Region, Institute of Entomology, Guizhou University, Guiyang, Guizhou 550025, People's Republic of China.
J Agric Food Chem. 2024 Dec 11;72(49):27125-27138. doi: 10.1021/acs.jafc.4c10093. Epub 2024 Nov 23.
The tea plant () is a unique beverage crop worldwide, but its yield and quality are adversely affected by . However, the response mechanisms of tea plants to stress remain poorly known. Herein, we present the life table of on resistant (W016) and susceptible (HJY) tea cultivars, demonstrating that the fitness of on W016 was lower than that on HJY. Integrated metabolic and transcriptomic analyses revealed that feeding activated pathways associated with phenylpropanoid biosynthesis, plant hormone signal transduction, and ATP-binding cassette (ABC) transporters. Notably, feeding significantly upregulated the levels of brassinolide and -coumaryl alcohol in W016 but not in HJY. Furthermore, enzymatic assays indicated that cinnamyl alcohol dehydrogenase (CsCAD1) catalyzes the formation of -coumaryl alcohol participation in lignin synthesis. Our findings highlight the role of brassinolide-mediated lignin biosynthesis of the tea plant in response to feeding.
茶树（）是世界上一种独特的饮料作物，但其产量和品质受到[未提及具体因素，原文中此处为空白]的不利影响。然而，茶树对[未提及具体因素，原文中此处为空白]胁迫的响应机制仍知之甚少。在此，我们展示了[未提及具体对象，原文中此处为空白]在抗性（W016）和敏感（HJY）茶树品种上的生命表，表明[未提及具体对象，原文中此处为空白]在W016上的适合度低于在HJY上的适合度。综合代谢组学和转录组学分析表明，[未提及具体对象，原文中此处为空白]取食激活了与苯丙烷类生物合成、植物激素信号转导和ATP结合盒（ABC）转运蛋白相关的途径。值得注意的是，[未提及具体对象，原文中此处为空白]取食显著上调了W016中油菜素内酯和对香豆醇的水平，而在HJY中则没有。此外，[未提及具体对象，原文中此处为空白]的酶活性测定表明，肉桂醇脱氢酶（CsCAD1）催化对香豆醇的形成参与木质素合成。我们的研究结果突出了油菜素内酯介导的茶树木质素生物合成在响应[未提及具体对象，原文中此处为空白]取食中的作用。
