| 摘要: |
| 于1991年4月 - 1992年五月，以金藻和扁藻为材料，用室内一次培养法研究三苯基锡（TPTC）和三丁基锡（TBTC）化合物对光合色素含量的影响。结果表明，两种有机锡对两种藻均有影响，在0.2 - 0.4 μg/L的浓度时有轻微毒性；浓度大于0.5 μg/L时，能使光合色素明显减少。对于两种藻叶绿素a 72h EC50 影响结果：TBTC和TPTC对金藻的均为0.59 μg/L；对扁藻的，TBTC是0.87 μg/L，而TPTC本出现半效应浓度。对于两种藻的类胡萝卜素72h EC50影响结果：金藻，TPTC是0.57 μg/L，TBTC是0.49 μg/L；扁藻，TBTC是0.89 μg/L，TPTC也未出现半效应浓度。认为，两种有机锡对光合色素有明显的破坏作用。 |
| 关键词: 三苯基锡 三丁基锡 湛江叉鞭金藻 扁藻 光合色素 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金资助，48970274号 |
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| THE PHYSIOLOGICAL EFFECTS OF ORGANOTIN ON MARINE MICROALGAEI. EFFECTS OF ORGANOTIN ON PHOTOSYNTHETIC PIGMENTS OF TWO MARINE PHYTOPLANKTON |
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Gao Shangde, Wu Yiping, Zhao Xinyu
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Department of Biology, Ocean University of Qingdao, Qingdao 266003
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| Abstract: |
| Effects or organotin compounds, triphenyltin chloride (TPTC) and tributyltin chloride (TBTC), on photosynthetic pigments (chlorophyll a, chlorophyll b, chlorophyll c and carotenoids) of pure cultures of two microalgae, Dicrateria zhanjiangensis and Platymonas sp., were tested from April, 1991 to January, 1992. The two species were from our departmental microalgae culture lab and batch culture was used. The results indicated that photosynthetic pigments of the two species were reduced markedly after 24h exposure to 0.5 μg/L TBTC and TPTC. The 72h Chl. a EC50, of TBTC and TPTC were both about 0.59 μg/L and the 72h carotenoids EC50, were 0.49 and 0.57 μg/L respectively for D. zhanjiangensis. The 72h Chl. a EC50 and 72h carotenoids EC50 of TBTC were 0.87 and 0.89 μg/L respectively for Platymonas sp.. Both Chl. a and carotenoids of Platymonas sp. were not reduced by TPTC to below 50% of that of the control; TBTC had more reducing effect than TPTC on photosynthetic pigments; Platymonas sp. could tolerate greater concentration of organotin than D. zhanjiangensis. |
| Key words: Triphenyltin chloride, Tributyltin chloride, Dicrateria zhanjiangensis, Plazymonas sp., Photosynthetic pigments |
