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Article

The Effects of Triclosan on Physiological and Photosynthetic Characteristics of Chlorella vulgaris

1
Fujian Engineering and Research Center of Rural Sewage Treatment and Water Safety, College of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361024, China
2
Hunan Provincial Key Laboratory of Water Treatment Functional Materials, Hunan University of Arts and Science, Changde 415000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Antonio Zuorro
Water 2021, 13(10), 1355; https://doi.org/10.3390/w13101355
Received: 10 April 2021 / Revised: 10 May 2021 / Accepted: 11 May 2021 / Published: 13 May 2021
(This article belongs to the Special Issue Water Environmental System Analysis)
Triclosan has been widely used as addition ingredient in personal care and medical antibacterial products, and the increasing amounts of triclosan discharged in aquatic environments pose a potential risk to aquatic ecological systems. In this study, we investigated the effects of exposure to varying triclosan concentrations on the growth, chlorophyll fluorescence and antioxidant enzyme activity of Chlorella vulgaris. The results showed that low-concentration triclosan (<0.75 mg/L) can stimulate the growth of Chlorella vulgaris, whereas 1.05 mg/L triclosan exhibited significant inhibition. Low-concentration triclosan (<0.75 mg/L) could improve the tolerance and utilization ability of Chlorella vulgaris in relation to strong light. We observed a significant increase in the malondialdehyde content of Chlorella vulgaris exposed to 1.05 mg/L triclosan. The intracellular superoxide dismutase and catalase (CAT) activities of Chlorella vulgaris exposed to triclosan were higher than the control groups, and the increase in this activity was positively correlated with the concentration of triclosan. The results also showed that excessive H2O2 may in turn damage the CAT structure and eventually inactivate CAT activity when Chlorella vulgaris is exposed to 1.05 mg/L triclosan. This study provided a theoretical basis which can be used to evaluate the ecological risk of triclosan in the aquatic environment. View Full-Text
Keywords: triclosan; Chlorella vulgaris; eco-toxicological effect; chlorophyll fluorescence triclosan; Chlorella vulgaris; eco-toxicological effect; chlorophyll fluorescence
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MDPI and ACS Style

Dai, Z.; Luo, X.; Yang, A.; Wang, J.; Fu, H.; Wu, Y. The Effects of Triclosan on Physiological and Photosynthetic Characteristics of Chlorella vulgaris. Water 2021, 13, 1355. https://doi.org/10.3390/w13101355

AMA Style

Dai Z, Luo X, Yang A, Wang J, Fu H, Wu Y. The Effects of Triclosan on Physiological and Photosynthetic Characteristics of Chlorella vulgaris. Water. 2021; 13(10):1355. https://doi.org/10.3390/w13101355

Chicago/Turabian Style

Dai, Zhineng, Xing Luo, Aili Yang, Jinsong Wang, Haiyan Fu, and Yicheng Wu. 2021. "The Effects of Triclosan on Physiological and Photosynthetic Characteristics of Chlorella vulgaris" Water 13, no. 10: 1355. https://doi.org/10.3390/w13101355

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