School of Environment, Nanjing Normal University, 1, Wenyuan Road, Xianlin University District, Nanjing, 210023, People's Republic of China.
Bull Environ Contam Toxicol. 2019 Aug;103(2):342-347. doi: 10.1007/s00128-019-02656-4. Epub 2019 Jun 20.
The antibiotic sulfadiazine (SDZ) is a challenging threat to the health of aquatic organisms, as it frequently occurs in aquatic ecosystems. Tolerance mechanisms and accumulation of SDZ in a floating macrophyte (Eichhornia crassipes) under hydroponic conditions were investigated in this study to provide more insight into the SDZ removal process. Results show that the presence of 1 mg L SDZ decreased the quickest and ranged from 669.45 to 165.34 μg L from days 5 to 25. Exposing E. crassipes to SDZ ( < 1 mg L) maintained stable leaf photosynthetic efficiency. The overall increase in superoxide dismutase and peroxidase activities with SDZ treatments indicated that leaves were resistant. SDZ was absorbed by E. crassipes, following the sequence of root > aerial parts under all treatments. These findings suggest that E. crassipes has the ability to phytoremediation SDZ contaminated water.
磺胺嘧啶（SDZ）是一种对水生生物健康具有挑战性的威胁，因为它经常出现在水生生态系统中。本研究旨在探讨水培条件下漂浮植物（凤眼莲）对 SDZ 的耐受机制和积累，以更深入地了解 SDZ 的去除过程。结果表明，在 1mg/L SDZ 的存在下，SDZ 的减少最快，从第 5 天到第 25 天，SDZ 的浓度从 669.45μg/L 降至 165.34μg/L。暴露于 SDZ（<1mg/L）的凤眼莲保持稳定的叶片光合作用效率。SDZ 处理后超氧化物歧化酶和过氧化物酶活性的整体增加表明叶片具有抗性。SDZ 被凤眼莲吸收，在所有处理中，根 > 地上部分的吸收顺序。这些发现表明，凤眼莲具有修复 SDZ 污染水的能力。
