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| 三苯基氯化锡对等鞭金藻生理功能的影响 |
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李正炎, 周名江, 李钧, 颜天
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中国科学院海洋研究所
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| 摘要: |
| 有机锡化合物是迄今为止人为引入海洋环境中的毒性最大的物质之一。自本世纪60年代开始有机锡被大量用作海洋防污涂料的活性成分,它的广泛使用给世界各国沿海地区带来了一系列的生态灾难(周名江等,1994)。国外关于有机锡对海洋动物的毒性影响已有大量的报道( Bryan & Gibbs,1986; Wade et al,1988; Axiak et al,1995),而有机锡对海洋浮游植物的毒性研究则相对较少,主要集中于有机锡对藻类生长、初级生产力(Callow & Evans,1981; Wong et al,1983)等方面的影响。本文以等鞭金藻(Isochrysis galbana)为实验生物,系统研究了有机锡对等鞭金藻生长、光合、呼吸、细胞色素含量以及细胞C,N,P含量的影响,为评价有机锡对海洋浮游植物的毒性效应提供了基础资料。 |
| 关键词: 三苯基氯化锡、等鞭金藻、生理功能 |
| DOI： |
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| 基金项目:中国科学院海洋研究所调查研究报告第2740号
本课题为国家自然科学基金资助项目，99290600号 |
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| EFFECTS OF TRIPHENYLTIN CHLORIDE(TPTC) ON PHYSIOLOGY OF ISOCHRYSIS GALBANA CELLS |
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Li Zhengyan, Zhou Mingjiang, Li Jun, Yan Tian
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Institute of Oceanology,Chinese Academy of Sciences
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| Abstract: |
| Batch culture studies on the effects of triphenyltin chloride (TPTC) on photosynthesis, respiration, chlorophyll-a content and carbon, nitrogen, and phosphorus content of Isochrysis galbana cells showed that low levels of triphenyltin (≤1.2 μg/L) promoted the respiration rate, increased chlorophyll-a content and decreased photosynthetic efficiency of chlorophyll-a. Exposed to 1.2 μg/L triphenyltin for 96 h, the cells decreased photosynthetic rate by 8%, increased respiration rate by 27%, increased chlorophyll-a content by 20% and decreased photosynthetic efficiency by 27%. Exposed to 2.4 μg/L triphenyltin for 96 h, the algal cells showed weakening in all of these physiological functions. Triphenyltin decreased the content of carbon, nitrogen and phosphorus in the algal cells. Phosphorus content was the most severely decreased. Exposed to 2.4 μg/L triphenyltin for 96 h,the algal cells’ content of C, N and P decreased by 24%, 34% and 36 %, respectively. |
| Key words: TRIPHENYLTIN CHLORIDE(TPTC),ISOCHRYSIS GALBANA CELLS |
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