Metabolomics Analysis Based on UHPLC-Q-TOF-MS/MS to Discriminate Dictyophora rubrovolvata from Different Geographical Origins of China

samples collected from the Sichuan, Fujian, and Guizhou provinces in China. Among the 383 identified metabolites, lipids and organic acids were the predominant classes. There were notable variations in metabolite composition across the three geographical areas. The Sichuan (SC) group showed a high concentration of phospholipids, the Guizhou (GZ) group was characterized by specific oxidized lipids and bioactive benzenoids, and the Fujian (FJ) group showed elevated levels of the antioxidant ergothioneine. We identified 17 unique metabolites, including tryptophol, 12-oxophytodienoic acid, and various fatty acid derivatives, which may act as significantly differential metabolites for different origins. Analysis of KEGG enrichment indicated that the main metabolic pathways involved were tryptophan metabolism, glycerophospholipid metabolism, and phenylpropanoid biosynthesis.