大戟科4种药用植物及其内生真菌脂肪酸组分研究

目的 :研究大戟科药用植物和其内生真菌相互关系 ,为探索大戟科植物生物活性物质来源 ,开发新药资源奠定基础。方法 :用气相色谱分析了大戟科乌桕、大戟、泽漆、重阳木 4种药用植物新鲜叶、茎及其 28株内生真菌的脂肪酸组分 ,并比较它们的差异。结果 :植物脂肪酸主要为α-亚麻酸、棕榈酸、亚油酸、油酸 ;内生真菌脂肪酸主要为亚油酸、油酸和棕榈酸。结论 :内生菌可以自主合成脂肪酸 ,因此可以作为分类鉴定的参考依据之一。植物及内生菌脂肪酸在α-亚麻酸含量上表现出极大的差异 ,推测可能和内生菌营养吸收及内生菌和宿主植物相互作用有关。

Comparative Studies on the Faity Acids Contained in four Species of Medicinal Plants from Family Euphorbiaceae and Their Endophytic Fungi

OBJECTIVE: The relation of four species of medicinal plants from family Euphorbiaceae and their endophytic fungi was studied to find the source of active substances for developing new pharmaceutical resources. METHOD: The main fatty acids contained in Sapium sebiferum, Euphorbia pekinensis, Euphorbia helioscopia, Bischofia polycarpam and their 28 strains of endophytic fungi were compared and analysed by GC. RESULT: The main fatty acids of the plants are: alpha-linolenic acid, palmitic acid, linolenic acid and oleic acid. Linolenic acid, palmitic acid and oleic acid are the main fatty acids of the endophytic fungi. CONCLUSION: The fatty acids could be produced by the endophytic fungi, which could be used as a factor for identification. There are great differences at the contents of alpha-linolenic acid between the plants and their endophytic fungi, which were suggested to be related with the nutrition absorption and the relationship between the endophytes and the host plant.