We revealed that Dionaea muscipula Ellis accumulates a great amount of cytotoxic naphthoquinone derivatives, of which the main component is plumbagin (1). It was also revealed that 1 showed strong antifeedant activity against Spodoptera litura. These results strongly suggest that 1 in D. muscipula operates as an antifeedant which prevents them from being consumed by predators. The accumulation of a great amount of 1 would be an important strategy of carnivorous plants for their survival. Also, we discuss the structure–activity relationship of the cytotoxicity of naphthoquinones using isolated naphthoquinones and their derivatives.
我们发现 Dionaea muscipula Ellis 积累了大量具有细胞毒性的
萘醌衍
生物,其中的主要成分是 plumbagin(1)。研究还发现,1 对 Spodoptera litura 具有很强的抗虫活性。这些结果有力地表明,1 在 D. muscipula 中起着反食性作用,可以防止它们被天敌吃掉。积累大量的 1 将是食肉植物生存的一个重要策略。此外,我们还利用分离的
萘醌及其衍
生物讨论了
萘醌的细胞毒性的结构-活性关系。