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The toxic effects of polystyrene microplastics on freshwater algae Chlorella pyrenoidosa depends on the different size of polystyrene microplastics.
Chemosphere. 2022 Dec; 308(Pt 1):136135.C

Abstract

Microplastics (MPs) are persistent environmental contaminants. The toxic effects of MPs on aquatic organisms have raised increasing concerns, but their toxic effects on aquatic phytoplankton has not been thoroughly investigated. In the present study, the toxic effects of two sizes MPs (1 μm and 5 μm) on Chlorella pyrenoidosa at 2, 10, 50 mg/L were explored for 1, 5, 10 days. The growth ratio, photosynthetic pigments content, extracellular polymeric substances content, soluble protein content, MDA content and relative expression of genes related to photosynthesis and energy metabolism were measured. These results indicated that 1 μm MP could significantly inhibit the growth of C. pyrenoidosa. Compared with the control group, 1 μm MP significantly reduced the photosynthetic pigment content, induced oxidative stress and disrupted the cell membrane integrity of C. pyrenoidosa. At the molecular level, 1 μm MP altered the transcript levels of genes related to photosynthesis and energy metabolism. Scanning electron microscopy and fluorescent images showed that MPs aggregation with C. pyrenoidosa may be the main reason for the toxic effects of MPs. These results will provide new insight into the toxicity of different MPs on aquatic phytoplankton, and evaluate the risks caused by MPs in aquatic environments.

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Authors+Show Affiliations

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.

School of Internet of Things, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China.

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China.

College of Animal Science and Technology, Yangzhou University, Yangzhou, 225009, China. Electronic address: huiyang@yzu.edu.cn.

MeSH

ChlorellaFresh WaterMicroplasticsPhytoplanktonPlasticsPolystyrenesWater Pollutants, Chemical

Pub Type(s)

Journal Article

Language

eng

PubMed ID

36007743

Citation

Cao, Qingsheng, et al. "The Toxic Effects of Polystyrene Microplastics On Freshwater Algae Chlorella Pyrenoidosa Depends On the Different Size of Polystyrene Microplastics." Chemosphere, vol. 308, no. Pt 1, 2022, p. 136135.

Cao Q, Sun W, Yang T, et al. The toxic effects of polystyrene microplastics on freshwater algae Chlorella pyrenoidosa depends on the different size of polystyrene microplastics. Chemosphere. 2022;308(Pt 1):136135.

Cao, Q., Sun, W., Yang, T., Zhu, Z., Jiang, Y., Hu, W., Wei, W., Zhang, Y., & Yang, H. (2022). The toxic effects of polystyrene microplastics on freshwater algae Chlorella pyrenoidosa depends on the different size of polystyrene microplastics. Chemosphere, 308(Pt 1), 136135. https://doi.org/10.1016/j.chemosphere.2022.136135

Cao Q, et al. The Toxic Effects of Polystyrene Microplastics On Freshwater Algae Chlorella Pyrenoidosa Depends On the Different Size of Polystyrene Microplastics. Chemosphere. 2022;308(Pt 1):136135. PubMed PMID: 36007743.

* Article titles in AMA citation format should be in sentence-case

TY - JOUR T1 - The toxic effects of polystyrene microplastics on freshwater algae Chlorella pyrenoidosa depends on the different size of polystyrene microplastics. AU - Cao,Qingsheng, AU - Sun,Wenbo, AU - Yang,Tian, AU - Zhu,Zhu, AU - Jiang,Yinan, AU - Hu,Wenlong, AU - Wei,Wenzhi, AU - Zhang,Yingying, AU - Yang,Hui, Y1 - 2022/08/22/ PY - 2022/05/05/received PY - 2022/08/16/revised PY - 2022/08/17/accepted PY - 2022/8/26/pubmed PY - 2022/10/14/medline PY - 2022/8/25/entrez KW - Aggregation KW - Chlorella pyrenoidosa KW - Microplastics KW - Oxidative stress KW - Photosynthesis SP - 136135 EP - 136135 JF - Chemosphere JO - Chemosphere VL - 308 IS - Pt 1 N2 - Microplastics (MPs) are persistent environmental contaminants. The toxic effects of MPs on aquatic organisms have raised increasing concerns, but their toxic effects on aquatic phytoplankton has not been thoroughly investigated. In the present study, the toxic effects of two sizes MPs (1 μm and 5 μm) on Chlorella pyrenoidosa at 2, 10, 50 mg/L were explored for 1, 5, 10 days. The growth ratio, photosynthetic pigments content, extracellular polymeric substances content, soluble protein content, MDA content and relative expression of genes related to photosynthesis and energy metabolism were measured. These results indicated that 1 μm MP could significantly inhibit the growth of C. pyrenoidosa. Compared with the control group, 1 μm MP significantly reduced the photosynthetic pigment content, induced oxidative stress and disrupted the cell membrane integrity of C. pyrenoidosa. At the molecular level, 1 μm MP altered the transcript levels of genes related to photosynthesis and energy metabolism. Scanning electron microscopy and fluorescent images showed that MPs aggregation with C. pyrenoidosa may be the main reason for the toxic effects of MPs. These results will provide new insight into the toxicity of different MPs on aquatic phytoplankton, and evaluate the risks caused by MPs in aquatic environments. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/36007743/The_toxic_effects_of_polystyrene_microplastics_on_freshwater_algae_Chlorella_pyrenoidosa_depends_on_the_different_size_of_polystyrene_microplastics_ DB - PRIME DP - Unbound Medicine ER -