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首页> 外文期刊>Anais da Academia Brasileira de Ciencias >Effect of indigo dye effluent on the growth, biomass production and phenotypic plasticity of Scenedesmus quadricauda(Chlorococcales)
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Effect of indigo dye effluent on the growth, biomass production and phenotypic plasticity of Scenedesmus quadricauda(Chlorococcales)

机译：靛蓝染料流出物对四球藻生长，生物量产生和表型可塑性的影响

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The effect of indigo dye effluent on the freshwater microalgaScenedesmus quadricauda ABU12 was investigated under controlled laboratory conditions. The microalga was exposed to different concentrations of the effluent obtained by diluting the dye effluent from 100 to 175 times in bold basal medium (BBM). The growth rate of the microalga decreased as indigo dye effluent concentration increased (p 0.05). The EC50 was found to be 166 dilution factor of the effluent. Chlorophyll a, cell density and dry weight production as biomarkers were negatively affected by high indigo dye effluent concentration, their levels were higher at low effluent concentrations (p 0.05). Changes in coenobia size significantly correlated with the dye effluent concentration. A shift from large to small coenobia with increasing indigo dye effluent concentration was obtained. We conclude that even at low concentrations; effluents from textile industrial processes that use indigo dye are capable of significantly reducing the growth and biomass production, in addition to altering the morphological characteristics of the freshwater microalga S. quadricauda. The systematic reduction in the number of cells per coenobium observed in this study further confirms that environmental stress affects coenobium structure in the genus Scenedesmus, which means it can be considered an important biomarker for toxicity testing.
机译：在受控实验室条件下，研究了靛蓝染料流出物对淡水微藻Quadricauda ABU12的影响。将微藻暴露于不同浓度的废水中，该废水是通过将染料废水在粗体基础培养基（BBM）中稀释100至175倍而获得的。随着靛蓝染料废水浓度的增加，微藻的生长速率降低（p <0.05）。发现EC50为废水的166稀释因子。高靛蓝染料废水浓度对叶绿素a，细胞密度和干重产生等生物标志物产生不利影响，在低废水浓度下其水平较高（p <0.05）。 Coenobia大小的变化与染料流出物浓度显着相关。随着靛蓝染料流出物浓度的增加，获得了从大到小eno足的转变。我们得出结论，即使在低浓度下;除靛蓝染料改变了淡水微藻的形态特征外，使用靛蓝染料的纺织工业过程中的废料还能够显着降低其生长量和生物量的产生。在这项研究中观察到的系统化的每个Coenobium细胞数量的减少进一步证实了环境胁迫影响了Scendesmus属中Coenobium的结构，这意味着它可以被认为是毒性测试的重要生物标记。

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