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应用四膜虫刺泡发射试验方法评价金属离子的毒性
引用本文:王永兴,吴庆龙,王晓蓉,王连生. 应用四膜虫刺泡发射试验方法评价金属离子的毒性[J]. 中国环境科学, 1998, 18(5): 0-0
作者姓名:王永兴  吴庆龙  王晓蓉  王连生
作者单位:1.南京大学环境科学与工程系污染控制与资源化研究国家重点实验室 南京210093;2.中国科学院南京地理与湖泊研究所 南京210008
摘    要:应用致突变阴性、阳性对照(Cu2+,Cr2O2-4,Cd2+,丝裂霉素MMC,环磷酰胺CP,秋水仙素Colchicine)评价四膜虫刺泡发射实验方法的可行性,并应用该方法检测稀土金属离子La3+,Ce3+,Sm3+,Y3+,Gd3+对四膜虫刺泡发射的影响效应。结果表明,由于细胞毒性引起阳性对照最高浓度组刺泡发射率比低浓度组低外,其它处理浓度与刺泡发射率呈现良好的相关性。四膜虫刺泡发射试验不需加活性酶,是一种值得推荐的快速、简便、可靠的水生生物短期测试方法。稀土金属离子La3+,Ce3+,Sm3+,Y3+,Gd3+处理四膜虫的刺泡发射率同样具有随浓度升高而增加的趋势,但在低浓度处理组各检测时间内四膜虫刺泡发射率低于对照组,该结果与稀土低浓度时的刺激效应和抗突变性不无相关。

关 键 词:四膜虫  金属离子  刺泡发射试验  毒性  
收稿时间:1900-01-01;
修稿时间:1997-12-23

Toxicity of metal ions evaluated with tricocyst test of Tetrahymena pyriformis.
Wang Yongxing ,Wu Qinglong ,Wang Xiaorong ,Wang Liansheng. Toxicity of metal ions evaluated with tricocyst test of Tetrahymena pyriformis.[J]. China Environmental Science, 1998, 18(5): 0-0
Authors:Wang Yongxing   Wu Qinglong   Wang Xiaorong   Wang Liansheng
Affiliation:Wang Yongxing 1,Wu Qinglong 2,Wang Xiaorong 1,Wang Liansheng 1
Abstract:Feasibility of tricocyst test with Tetrahymena pyriformis were evaluated by serial chemicals (Cu 2 , Cr 2O 2 4,Cd 2 ,MMC, CP, Colchicine). There is no significant difference between control and treated groups with negative chemical (Cu 2 ). Except at the highest concentration the frequency of tricocyst decrease for the cytotoxicity, it shows good relations to the concentrations of positive chemicals (Cr 2O 2 , Cd 2 , MMC, CP). The results show that tricocyst test of Tetrahymena pyriformis is a recommendable, handy, and reliable method for biomonitoring with freshwater species. After treated with the REE ions La 3 , Ce 3 , Sm 3 , Y 3 , Gd 3 , the frequency of tricocyst also become higher as the cocentrations higher. But at low concentrations, the lower frequency than control are observed.It is considered that this effect concerned with the stimulation growth response at low REE concentrations.
Keywords:Tetrahymena pyriformis metal ions tricocyst test toxicity
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