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首页> 外文期刊>Environmental toxicology and chemistry >Extractable substances (Anionic surfactants) from membrane filters induce morphological changes in the green alga Scenedesmus obliquus(Chlorophyceae)
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Extractable substances (Anionic surfactants) from membrane filters induce morphological changes in the green alga Scenedesmus obliquus(Chlorophyceae)

机译：膜滤器中的可提取物质（阴离子表面活性剂）诱导绿藻斜叶藻（Chlorophyceae）的形态变化

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摘要

The effect of filtration of medium through different kinds of filters(glass fiber, mixed esters of cellulose and nitrocellulose) on the morphology in the green alga Scenedesmus obliquus was examined. Several compounds potentially released from membrane filters were further investigated, and among them, two anionic surfactants were found to be morphologically active. Exposure to the anionic surfactants resulted within 2 d in the transformation of unicellular populations of Scenedesmus in populations dominated by colonies. Growth rates between control and surfactant-exposed populations were identical, and the morphological effect occurred at surfactant concentrations far below the reported no-observed-effect concentration for growth inhibition, stressing the need for inclusion of morphological appearance of scenedesmus in algal toxicity testing to improve the assessment of ecological risks.
机译：考察了通过不同种类的过滤器（玻璃纤维，纤维素和硝酸纤维素的混合酯）过滤培养基对绿藻斜生藻形态的影响。进一步研究了可能从膜滤器中释放出来的几种化合物，其中发现两种阴离子表面活性剂具有形态学活性。暴露于阴离子表面活性剂在2 d内导致了以菌落为主的种群中单藻场景的单细胞种群的转化。对照和暴露于表面活性剂的种群之间的生长速率相同，并且在表面活性剂浓度远低于所报道的抑制生长的未观察到的影响浓度时，形态学效应发生，强调需要在藻类毒性试验中包括场景藻的形态学表现以改善生态风险评估。

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