Li Pengshu, Xiang Qiuyan, Wang Yue, Dong Xuehui
College of Agronomy and Biotechnology, Sanya Institute of College of China Agricultural University, Sanya 610101, China.
College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
Plants (Basel). 2024 Jun 21;13(13):1720. doi: 10.3390/plants13131720.
Maxim. is a herbal plant with various therapeutic effects, and its aboveground tissues contain flavonol compounds such as icaritin that can be used to produce new drugs for the treatment of advanced liver cancer. Previous studies have shown that ultraviolet-B (UV-B, 280-315 nm) stress can increase the levels of flavonoid substances in plants. In the current study, we observed the microstructure of leaves after 0, 5, 10, 15, and 20 d of UV-B radiation (60 μw·cm) and quality formation mechanism of leaves after 0, 10, and 20 d of UV-B radiation by LC‒ESI‒MS/MS. The contents of flavonols such as icariside I, wushanicaritin, icaritin, and kumatakenin were significantly upregulated after 10 d of radiation. The results indicated that UV-B radiation for 10 d inhibited the morphological development of but increased the content of active medicinal components, providing a positive strategy for epimedium quality improvement.
淫羊藿是一种具有多种治疗作用的草本植物，其地上组织含有淫羊藿苷等黄酮醇类化合物，可用于生产治疗晚期肝癌的新药。先前的研究表明，紫外线B（UV-B，280 - 315纳米）胁迫可增加植物中黄酮类物质的含量。在本研究中，我们通过LC‒ESI‒MS/MS观察了淫羊藿在UV-B辐射（60 μw·cm）0、5、10、15和20天后叶片的微观结构，以及在UV-B辐射0、10和20天后叶片的品质形成机制。辐射10天后，淫羊藿苷I、巫山淫羊藿素、淫羊藿苷和朝藿定C等黄酮醇类物质的含量显著上调。结果表明，10天的UV-B辐射抑制了淫羊藿的形态发育，但增加了活性药用成分的含量，为淫羊藿品质提升提供了积极策略。
