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Single and combined toxicity assessment of primary or UV-aged microplastics and adsorbed organic pollutants on microalga Chlorella pyrenoidosa.
Environ Pollut. 2023 Feb 01; 318:120925.EP

Abstract

Microplastics (MPs), an emerging pollutant, have been increasingly raising concern due to the potential impacts on aquatic organisms. Moreover, the environmental aged MPs always exhibit different environmental behavior and interaction effect with organic pollutants from virgin MPs. In this work, the single and combined toxicity impact on Chlorella pyrenoidosa, a symbiont representative, has been investigated between MPs (e.g., polyamide microplastic (PA6), 75 μm) and organic pollutants (e.g., sulfamethoxazole (SMX) and dicamba (DCB)). Growth inhibition, chlorophyll accumulation, superoxide dismutase (SOD), malondialdehyde (MDA), and catalase (CAT) were investigated with the primary or UV-aged PA6. Above 0.5 g/L PA6 (primary or UV-aged) inhibited cell growth and chlorophyll accumulation after 96 h cultivation as compared with the control. Besides, the inhibition impacts have enhanced as the UV-aging time extending in the single PA6 systems. The algae growth inhibition rate after 96 h cultivation in both the system i.e., single (PA6: 6.9%) and combined (PA6-SMX: 14.2%, PA6-DCB: 14.9%) was slightly lower than that of exposing in organic pollutants alone (SMX: 23.9%, DCB: 25.0%), while the chl. b concentration in 60 days UV-aged PA6 combined with SMX (1.19 mg/L) or DCB (1.40 mg/L) systems were higher than in single SMX (1.04 mg/L) or DCB (1.33 mg/L) system. In addition, there were several differences of the cellular oxidative stress in the combined system of SMX and DCB. Specially, it was not noticeable of three enzymatic activities for SMX exposing in the presence of primary or UV-aged PA6. While SOD, CAT, and MDA activities was obviously increasing after exposing in PA6 and DCB combined system, indicating the significant synergistic effect on algae cells damage. This research verified the remarkable combined toxicity between UV-aged MPs and organic pollutants on microalgae.

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Authors+Show Affiliations

Song W
School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, PR China.
Fu C
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, PR China.
Fang Y
School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, PR China.
Wang Z
School of Civil and Environmental Engineering, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China.
Li J
School of Civil and Environmental Engineering, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China.
Zhang X
School of Civil and Environmental Engineering, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China. Electronic address: xiaolei.zhang2016@foxmail.com.
Bhatt K
Department of Food Science, Purdue University, West Lafayette, IN, USA.
Liu L
School of Civil and Environmental Engineering, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China.
Wang N
School of Civil and Environmental Engineering, Shenzhen Key Laboratory of Water Resource Application and Environmental Pollution Control, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055, PR China.
Liu F
Beijing BHT Environmental Technology Co., Ltd. (BHT), Beijing, 100000, PR China.
Zhu S
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, PR China.

MeSH

ChlorellaChlorophyllMicroalgaeMicroplasticsPlasticsSuperoxide DismutaseWater Pollutants, ChemicalUltraviolet Rays

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36566677

Citation

Song, Wei, et al. "Single and Combined Toxicity Assessment of Primary or UV-aged Microplastics and Adsorbed Organic Pollutants On Microalga Chlorella Pyrenoidosa." Environmental Pollution (Barking, Essex : 1987), vol. 318, 2023, p. 120925.
Song W, Fu C, Fang Y, et al. Single and combined toxicity assessment of primary or UV-aged microplastics and adsorbed organic pollutants on microalga Chlorella pyrenoidosa. Environ Pollut. 2023;318:120925.
Song, W., Fu, C., Fang, Y., Wang, Z., Li, J., Zhang, X., Bhatt, K., Liu, L., Wang, N., Liu, F., & Zhu, S. (2023). Single and combined toxicity assessment of primary or UV-aged microplastics and adsorbed organic pollutants on microalga Chlorella pyrenoidosa. Environmental Pollution (Barking, Essex : 1987), 318, 120925. https://doi.org/10.1016/j.envpol.2022.120925
Song W, et al. Single and Combined Toxicity Assessment of Primary or UV-aged Microplastics and Adsorbed Organic Pollutants On Microalga Chlorella Pyrenoidosa. Environ Pollut. 2023 Feb 1;318:120925. PubMed PMID: 36566677.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Single and combined toxicity assessment of primary or UV-aged microplastics and adsorbed organic pollutants on microalga Chlorella pyrenoidosa. AU - Song,Wei, AU - Fu,Caixia, AU - Fang,Yuning, AU - Wang,Zhuoyue, AU - Li,Ji, AU - Zhang,Xiaolei, AU - Bhatt,Kalpana, AU - Liu,Lu, AU - Wang,Ningjie, AU - Liu,Fang, AU - Zhu,Shunni, Y1 - 2022/12/23/ PY - 2022/08/30/received PY - 2022/12/15/revised PY - 2022/12/20/accepted PY - 2022/12/26/pubmed PY - 2023/1/18/medline PY - 2022/12/25/entrez KW - Chlorella pyrenoidosa KW - Combined toxicity KW - Organic pollutants KW - UV-aged microplastic SP - 120925 EP - 120925 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 318 N2 - Microplastics (MPs), an emerging pollutant, have been increasingly raising concern due to the potential impacts on aquatic organisms. Moreover, the environmental aged MPs always exhibit different environmental behavior and interaction effect with organic pollutants from virgin MPs. In this work, the single and combined toxicity impact on Chlorella pyrenoidosa, a symbiont representative, has been investigated between MPs (e.g., polyamide microplastic (PA6), 75 μm) and organic pollutants (e.g., sulfamethoxazole (SMX) and dicamba (DCB)). Growth inhibition, chlorophyll accumulation, superoxide dismutase (SOD), malondialdehyde (MDA), and catalase (CAT) were investigated with the primary or UV-aged PA6. Above 0.5 g/L PA6 (primary or UV-aged) inhibited cell growth and chlorophyll accumulation after 96 h cultivation as compared with the control. Besides, the inhibition impacts have enhanced as the UV-aging time extending in the single PA6 systems. The algae growth inhibition rate after 96 h cultivation in both the system i.e., single (PA6: 6.9%) and combined (PA6-SMX: 14.2%, PA6-DCB: 14.9%) was slightly lower than that of exposing in organic pollutants alone (SMX: 23.9%, DCB: 25.0%), while the chl. b concentration in 60 days UV-aged PA6 combined with SMX (1.19 mg/L) or DCB (1.40 mg/L) systems were higher than in single SMX (1.04 mg/L) or DCB (1.33 mg/L) system. In addition, there were several differences of the cellular oxidative stress in the combined system of SMX and DCB. Specially, it was not noticeable of three enzymatic activities for SMX exposing in the presence of primary or UV-aged PA6. While SOD, CAT, and MDA activities was obviously increasing after exposing in PA6 and DCB combined system, indicating the significant synergistic effect on algae cells damage. This research verified the remarkable combined toxicity between UV-aged MPs and organic pollutants on microalgae. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/36566677/Single_and_combined_toxicity_assessment_of_primary_or_UV_aged_microplastics_and_adsorbed_organic_pollutants_on_microalga_Chlorella_pyrenoidosa_ DB - PRIME DP - Unbound Medicine ER -