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引用本文:胡陈艳,葛芳杰,张胜花,刘碧云,王静,高云霓,吴振斌.马来眼子菜体内抑藻物质分离及常见脂肪酸抑藻效应.湖泊科学,2010,22(4):569-576. DOI:10.18307/2010.0414
HU Chenyan,GE Fangjie,ZHANG Shenghua,LIU Biyun,WANG Jing,GAO Yunni,WU Zhenbin.Isolation of antialgal compounds from Potamogeton malaianus and alga) inhibitory effects of common fatty acids. J. Lake Sci.2010,22(4):569-576. DOI:10.18307/2010.0414
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马来眼子菜体内抑藻物质分离及常见脂肪酸抑藻效应
胡陈艳1,2, 葛芳杰1,2, 张胜花3, 刘碧云1, 王静1,2, 高云霓1,2, 吴振斌1
1.中国科学院水生生物研究所淡水生态与生物技术国家重点实验室 武汉 430072;2.中国科学院研究生院 北京 100049;3.云南大学环境与湖泊研究院 昆明 650091
摘要:
提取马来眼子菜植物体内的抑藻物质,分离得到一活性组分,气质联用(GC-MS)鉴定其主要为脂肪酸类物质,抑制羊角月牙藻的半效应浓度(EC50,3d)为7.90mg/L.测定组分中含有的8种脂肪酸与油酸单独及联合作用对羊角月牙藻的抑藻效果,结果证实脂肪酸类物质具有化感抑藻效应,其抑藻效果与其碳链长度及其不饱和度有关,碳链越短其抑藻活性越高,不饱和脂肪酸的抑藻效应大于同碳链饱和脂肪酸,多种脂肪酸联合作用时具有协同作用.分离过程中也得到另一甾醇组分,其对羊角月牙藻没有明显抑制作用,且对脂肪酸类物质的抑藻效果没有影响.
关键词:  马来眼子菜  羊角月牙藻  脂肪酸  化感作用
DOI:10.18307/2010.0414
分类号:
基金项目:国家自然科学基金项目(30870221,50808172,20877093);国家“十一五”水专项项目(2009ZX07106-002-004);中国博士后科学基金项目(20080431013)资助
Isolation of antialgal compounds from Potamogeton malaianus and alga) inhibitory effects of common fatty acids
HU Chenyan1,2, GE Fangjie1,2, ZHANG Shenghua3, LIU Biyun1, WANG Jing1,2, GAO Yunni1,2, WU Zhenbin1
1.State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, P. R. China;2.Graduate School of the Chinese Academy of Sciences, Beijing 100049, P. R. China;3.Institute of Environment and Lakes, Yunnan University, Kunming 650091, P. R. China
Abstract:
One active fraction, which mainly contained many kinds of fatty acids, was extracted and isolated from the macrophyte Potamogeton malaianus, then was analyzed by the GC-MS. The EC50,3d fraction on Selenactrum capricornutwn was 7. 90mg/L. The inhibition of eight fatty acids in the fraction and oleic acid on S. capricornutum confirmed that fatty acids had the al-lelopathic inhibitory effect and the effect was relevant to the carbon chain and unsaturated linkages,which meant the shorter the car-bon chain of the fatty acid, the stronger thegal growth inhibited, and the unsaturated linkages in the fatty acid,the stron-ger the algal growth was inhibited. The combined activity of multi-fatty acids showed synergistic growth inhibition on S. capricornu-tum. Mother fraction,which mainly consisted of sterols,was isolated from the extraction of P. malaianua,but it did not inhibit the growth of S. capricornutum and had no evident influence on the allelopathic inhibition of fatty acids on S. Capricornutum.
Key words:  Potamogeton malaianus  Selenastrum capricornutum  fatty acids  allelopathy
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