AI Article Synopsis
- Norfloxacin (NFX) and sulfadiazine (SDZ) are commonly found antibiotic pollutants in water, belonging to the fluoroquinolone and sulfonamide classes respectively.
- A study focused on their effects on Arthrospira platensis, a key cyanobacteria, indicating that A. platensis is more sensitive to NFX than SDZ, particularly affecting its growth and photosynthetic activity.
- The findings suggest that A. platensis could potentially be used to help clean up contaminated water by reducing these antibiotic pollutants and recovering biomass.
Article Abstract
Norfloxacin (NFX) and sulfadiazine (SDZ) are two widely used antibiotics belonging to fluoroquinolone and sulfonamide groups, respectively, and have become the commonly detected micropollutants in aquatic environments. However, only few works have been conducted to investigate the highly probable inhibition of these antibiotic pollutants to Arthrospira platensis, which is an important species of cyanobacteria that is one of primary producers in aquatic ecosystems and should be remarkably sensitive to environmental pollutants due to its prokaryotic characteristics. Hence, the toxicological effects and removal efficiencies of NFX and SDZ in culturing A. platensis were studied by analyzing the biomass growth, photosynthetic pigments, primary biocomponents, and antibiotics concentration. The corresponding variations of these characteristics showed the higher sensitivity of A. platensis to NFX than to SDZ, indicating the specifically targeted effect of NFX on A. platensis, which could be confirmed in silico by the higher binding affinity of NFX with the critical enzyme. The obtained results illustrated the roles of NFX and SDZ on the growth of A. platensis, thus providing the great support in employing A. platensis to reduce hazards from contaminated water and recover biomass resources.
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| http://dx.doi.org/10.1016/j.ecoenv.2022.114468 | DOI Listing |
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