The growth of Arthrospira platensis and physiological changes in biomass under the effects of six rare earth elements Dy, Sm, Tb, La, Nd and Yb were evaluated. Elements were tested by three concentrations of 10, 20 and 30 mg/L. According to neutron activation analysis data A. platensis's accumulation capacity toward studied elements changes in the following order of La > Dy > Nd > Sm > Yb > Tb. The results show that Dy and La ions stimulate biomass growth and Yb ions inhibit it, while Sm, Tb and Nd ions do not affect biomass accumulation. The contents of proteins and chlorophyll a are not affected by the presence of rare earth elements in the cultivation medium. Studied elements affect to different extents carbohydrates, phycobilins, β-carotene, lipids and MDA contents in spirulina biomass. Changes in the antioxidant activity under applied metal loads reveal a moderate stress in exposed A. platensis. Cyanobacterium A. platensis can be successfully used for bioremediation of natural water contaminated with REEs as well as REEs recovery from low polluted industrial effluents.

评价了钝顶节旋藻在6种稀土元素Dy、Sm、Tb、La、Nd和Yb作用下的生长和生物量生理变化。元素通过 10、20 和 30 mg/L 三个浓度进行测试。根据中子活化分析数据，A. platensis对研究元素的积累能力按以下顺序变化：La > Dy > Nd > Sm > Yb > Tb。结果表明，Dy 和 La 离子刺激生物量生长，Yb 离子抑制它，而 Sm、Tb 和 Nd 离子不影响生物量积累。蛋白质和叶绿素a的含量不受培养基中稀土元素的影响。研究的元素在不同程度上影响螺旋藻生物质中的碳水化合物、藻胆素、β-胡萝卜素、脂质和 MDA 含量。在施加的金属负载下抗氧化活性的变化表明暴露的A. platensis存在中等压力。蓝细菌A. platensis可成功用于被 REE 污染的天然水的生物修复以及从低污染工业废水中回收 REE。