Jiangsu Province Key Laboratory for Biodiversity and Biotechnology, School of Biological Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing, 210046, China.
Bull Environ Contam Toxicol. 2012 Jul;89(1):67-72. doi: 10.1007/s00128-012-0633-8. Epub 2012 Apr 8.
We studied the antioxidant responses of macrophyte Vallisnerria natans seedlings to combined ammonia (0, 0.21, and 0.85 mg L(-1)) and microcystin-LR (MC-LR) (0, 10, and 50 μg L(-1)) for 7 days. Results showed that superoxide dismutase, catalase (CAT), peroxidase, and glutathione were significantly induced by the mixtures of ammonia and MC-LR, and there were significant interactions between ammonia and MC-LR. Specially, CAT increased about fivefold at ammonia 0.85 mg L(-1) and MC-LR 50 μg L(-1) on day 3. Malondialdehyde fluctuated with both ammonia and MC-LR, and significant interactions were detected between the two stressors. Changes in all the measured variables were time-dependent.
我们研究了氨（0、0.21 和 0.85mg/L）和微囊藻毒素-LR（MC-LR）（0、10 和 50μg/L）组合对沉水植物苦草幼苗抗氧化响应的影响，为期 7 天。结果表明，超氧化物歧化酶、过氧化氢酶（CAT）、过氧化物酶和谷胱甘肽均受氨和 MC-LR 的混合物诱导，氨和 MC-LR 之间存在显著的相互作用。特别是，CAT 在第 3 天氨浓度为 0.85mg/L 和 MC-LR 浓度为 50μg/L 时增加了约五倍。丙二醛随氨和 MC-LR 而波动，两种胁迫因子之间存在显著的相互作用。所有测量变量的变化均与时间有关。
