期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 63, 期 16, 页码 4220-4227出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.5b01031
关键词
serotonin derivatives; tryptamine derivatives; serotonin 5-O-beta-glucoside; N-methylserotonin 5-O-beta-glucoside; bufotenine 5-O-beta-glucoside; bufotenidine 5-O-beta-glucoside; biotic stress; Citrus plants
Citrus genus is characterized by a specific presence of indole metabolites deriving from the N-methylation of tryptamine and its hydroxylated form, 5-hydroxytryptamine (serotonin), which are likely involved in plant defense mechanisms. In this study, we identified for the first time the occurrence in Citrus plants of serotonin 5-O-beta-glucoside and all its N-methylated derivatives, that is, N-methylserotonin 5-O-beta-glucoside, N,N-dimethylserotonin (bufotenine) 5-O-beta-glucoside, and N,N,N-trimethylserotonin (bufotenidine) 5-O-beta-glucoside. The identification of the glucosylated compounds was based on mass spectrometric studies, hydrolysis by glucosidase, and in some cases, comparison to authentic compounds. Beside leaves, the distribution of the glucosylated forms and their aglycones in some Citrus species was evaluated in flavedo, albedo, juice, and seeds. The simultaneous presence of serotonin and its N-methylated derivatives, together with the corresponding glucosylated forms, is consistent with the occurrence of a metabolic pathway, specific for Citrus, aimed at potentiating the defensive response to biotic stress through the optimization of the production and use of the most toxic of such metabolites.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据