常叶倩;于文汐;俞爽;刘程曦;李梅;

• 1:南京大学环境学院污染控制与资源化研究国家重点实验室

摘要(Abstract)：

得克隆(Dechlorane Plus,DP)作为全球广泛使用的氯代阻燃剂,具有POPs特性和环境毒性,但其生物毒性数据非常有限。本文选择水生初级生产者纤细裸藻(Euglena gracilis)作为研究对象,通过检测藻细胞生长状况、光合色素水平、抗氧化酶活性、谷胱甘肽(GSH)和丙二醛(MDA)含量变化,研究了不同浓度DP对其生态毒性效应的影响。结果显示,低浓度DP对纤细裸藻生长具有一定促进作用,但差异不显著;DP浓度较低时(0.1和0.5 mg·L-1DP)类胡萝卜素含量受到轻微抑制;较高浓度DP暴露导致超氧化物歧化酶(SOD)、过氧化物酶(POD)和谷胱甘肽(GSH)水平显著增加,同时高浓度DP(8 mg·L-1)下MDA含量显著上升,提示膜结构受到损伤;表明较高实验浓度范围内,DP对纤细裸藻的生长及抗氧化系统均产生一定影响,结果将为DP的环境生态风险评价提供科学依据。

关键词(KeyWords)： 得克隆(DP);纤细裸藻;毒性效应;生长;光合色素;抗氧化酶

Abstract:

Keywords:

基金项目(Foundation): 国家水体重大专项(2014ZX07204-005);; 国家自然科学基金项目(41571468);; 江苏省科技支撑项目(BE2016172)

作者(Author): 常叶倩;于文汐;俞爽;刘程曦;李梅;

Email:

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