Faculty of Science, Botany and Microbiology Department, Alexandria University, Alexandria, Egypt.
Environmental and Crises Management Department, Simulator Complex, Arab Academy for Science, Technology and Maritime Transport, Alexandria, Egypt.
Environ Monit Assess. 2021 Aug 18;193(9):584. doi: 10.1007/s10661-021-09353-y.
Microalgae are rich source of protein containing necessary amino acids at different levels. The present study was designed to assess stimulatory and/or inhibitory impact of five different concentrations (5, 10, 15, 20, and 25 mg/L) of three essential heavy metals (nickel, zinc, and copper) on protein content (soluble, insoluble, and total) of the marine unicellular green alga Dunaliella tertiolecta. Further, geospatial analyses were used to assess the suitability of Qaroun Lake for D. tertiolecta proliferation. The experimental results showed a gradual increase in protein content of D. tertiolecta with low concentrations of the three investigated heavy metals. However, increasing levels of heavy metals led to inhibitory effect on protein synthesis in alga with different grades. Ni, Zn and Cu levels in Qaroun lake were found suitable for the proliferation of Dunaliella (Lower than 5 mg/L). The present study highly recommends the necessity to encourage site selection of optimal marine environments suitable for the proliferation of marine algae rich in protein content.
微藻是蛋白质的丰富来源，含有不同水平的必需氨基酸。本研究旨在评估五种不同浓度（5、10、15、20 和 25mg/L）的三种必需重金属（镍、锌和铜）对海洋单细胞绿藻杜氏盐藻蛋白质含量（可溶性、不溶性和总蛋白）的刺激和/或抑制影响。此外，还利用地理空间分析来评估卡云湖是否适合杜氏盐藻的增殖。实验结果表明，随着三种研究重金属浓度的降低，杜氏盐藻的蛋白质含量逐渐增加。然而，重金属水平的增加会对藻类的蛋白质合成产生不同程度的抑制作用。卡云湖中镍、锌和铜的含量适合杜氏盐藻的增殖（低于 5mg/L）。本研究强烈建议有必要鼓励选择最佳海洋环境的地点，以促进富含蛋白质的海洋藻类的增殖。
