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惠州西湖浮游植物磷脂脂肪酸特征研究

Characteristics of phospholipid fatty acids of phytoplankton in Huizhou West Lake
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摘要 对富营养化水体常见浮游植物进行了分离和培养,测定了其磷脂脂肪酸(PLFA)。同时,检测了惠州西湖浮游植物的磷脂脂肪酸;结合惠州西湖浮游植物群落组成数据,分析了浮游植物磷脂脂肪酸特征及其与浮游植物群落结构的关系。结果表明:结合PLFA与细胞丰度和生物量的分析,α-亚麻酸(18:3ω3)的质量浓度与蓝藻(除湖丝藻外)呈正相关;二十碳四烯酸ARA(20:4ω6)和二十二碳六烯酸DHA(22:6ω3)的质量浓度与硅藻呈正相关;二十碳五烯酸EPA(20:5ω3)和16:3ω3的质量浓度与绿藻呈正相关等,其中16:3ω3为绿藻门独有的脂肪酸。这些均与室内实验得到的结果相符合。本研究表明,磷脂脂肪酸可以作为生物标志物来分析浮游植物组成,它将是一种可行的研究浮游植物群落结构的新方法。 In this paper,we isolated and cultured some common phytoplankton species from eutrophic lakes and measured PLFA contents.Meanwhile,we measured the PLFA of phytoplankton from Huizhou West Lake,which were analyzed in relation to phytoplankton communities.The results showed that 18:3ω3 and ARA(20:4ω6)were positively correlated with the abundance of cyanobacteria(except for Limnothrix sp.) and diatoms;EPA(20:5ω3)and 16:3ω3 had a positive correlation with the abundance of green algae.Among them,16:3ω3 was likely specific to the green algae.This study suggests that PLFA might be used as biomakers to analyze the community composition of phytoplankton.
出处 《生态环境学报》 CSCD 北大核心 2012年第2期353-358,共6页 Ecology and Environmental Sciences
基金 国家自然科学基金项目(31000219 41073057)
关键词 浮游植物 磷脂脂肪酸 生物标志物 群落结构 phytoplankton phospholipid fatty acids(PLFA) biomarker community structure
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