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首页> 外文期刊>Protoplasma: An International Journal of Cell Biology >The effect of different concentrations of copper and lead on the morphology and physiology of Hypnea musciformis cultivated in vitro: a comparative analysis
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The effect of different concentrations of copper and lead on the morphology and physiology of Hypnea musciformis cultivated in vitro: a comparative analysis

机译：不同浓度的铜和铅对体外培养的Mushyformis形态和生理的影响：比较分析

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Copper and lead, as remnants of industrial activities and urban effluents, have heavily contaminated many aquatic environments. Therefore, this study aimed to determine their effects on the physiological, biochemical, and cell organization responses of Hypnea musciformis under laboratory conditions during a 7-day experimental period. To accomplish this, segments of H. musciformis were exposed to photosynthetic active radiation at 80 mu mol photons m(-2) s(-1), Cu (0.05 and 0.1 mg kg(-1)), and Pb (3.5 and 7 mg kg(-1)). Various intracellular abnormalities resulted from exposure to Cu and Pb, including a decrease in phycobiliproteins. Moreover, carotenoid and flavonoid contents, as well as phenolic compounds, were decreased, an apparent reflection of chemical antioxidant defense against reactive oxygen species. Treatment with Cu and Pb also caused an increase in the number of floridean starch grains, probably as a defense against nutrient deprivation. Compared to plants treated with lead, those treated with copper showed higher metabolic and ultrastructural alterations. These results suggest that H. musciformis more readily internalizes copper through transcellular absorption. Finally, as a result of ultrastructural damage and metabolic changes observed in plants exposed to different concentrations of Cu and Pb, a significant reduction in growth rates was observed. Nevertheless, the results indicated different susceptibility of H. musciformis to different concentrations of Cu and Pb.
机译：铜和铅作为工业活动和城市污水的残留物，已严重污染了许多水生环境。因此，本研究旨在确定其在实验室条件下为期7天的实验期间对豚鼠呼吸暂停的生理，生化和细胞组织反应的影响。为此，在80μmol光子m（-2）s（-1），Cu（0.05和0.1 mg kg（-1））和Pb（3.5和7）的光合活性辐射下，对H. musciformis的部分进行光合作用活性辐射。毫克公斤（-1））。多种细胞内异常是由于暴露于铜和铅引起的，包括藻胆蛋白的减少。此外，类胡萝卜素和类黄酮的含量以及酚类化合物的含量都降低了，这显然是化学抗氧化剂对活性氧的防御作用。用铜和铅处理还导致了氟里丹淀粉粒的数量增加，可能是为了防止营养缺乏。与用铅处理的植物相比，用铜处理的植物表现出更高的代谢和超微结构改变。这些结果表明，M。musciformis更容易通过跨细胞吸收使铜内在化。最后，由于在暴露于不同浓度的Cu和Pb的植物中观察到超微结构破坏和代谢变化，观察到生长速率显着降低。然而，结果表明，对不同浓度的Cu和Pb而言，M。musciformis的敏感性不同。

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