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Effect of microplastics exposure on the photosynthesis system of freshwater algae.
J Hazard Mater. 2019 07 15; 374:219-227.JH

Abstract

Microplastics are widely distributed in freshwater environments. At present, most of the studies on the toxicity of microplastics are concentrated on aquatic feeding animals, but relatively few have addressed freshwater algae. This study investigated the effect of microplastics (polypropylene (PP) and polyvinyl chloride (PVC)) exposure on the photosynthetic system of freshwater algae over the logarithmic growth period. The results showed that both PVC and PP had a negative effect on chlorophyll a concentrations of Chlorella (C.) pyrenoidosa and Microcystis (M.) flos-aquae; among them, when the concentration of PVC exceeded 250 mg/L, compared with the control group, the chlorophyll a content of C. pyrenoidosa was reduced by 55.23%. For photosynthetic activity, higher concentrations of PVC and PP can induce lower values of Fv/Fm, Fv/F0, and Fv'/Fm', suggesting a larger impact in algae. However, algae were able to adjust, with increased values of Fv/Fm, Fv/F0, and Fv'/Fm'. This dose-negative effect phenomenon also exists in the study of the rapid light-response curves. In addition, comparing the two microplastics, we could see that PVC greatly inhibits the photosynthesis system of freshwater algae. Our study confirmed that microplastics can affect algae growth under certain concentrations, which provides evidence for understanding the risks of microplastics.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Wu Y
Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen, 361021, China.
Guo P
Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen, 361021, China. Electronic address: peiyongguo@163.com.
Zhang X
Nanjing Institute of Environmental Science, Ministry of Environmental Protection of the People's Republic of China, Nanjing, 210042, China.
Zhang Y
Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen, 361021, China.
Xie S
Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen, 361021, China.
Deng J
Department of Environmental Science and Engineering, College of Chemical Engineering, Huaqiao University, Xiamen, Fujian, 361021, China; Institute of Environmental and Resources Technology, Huaqiao University, Xiamen, 361021, China.

MeSH

ChlorellaChlorophyll AFresh WaterMicrocystisMicroplasticsPhotosynthesisPhytoplanktonPolypropylenesPolyvinyl ChlorideRiskWater Pollutants, Chemical

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31005054

Citation

Wu, Yanmei, et al. "Effect of Microplastics Exposure On the Photosynthesis System of Freshwater Algae." Journal of Hazardous Materials, vol. 374, 2019, pp. 219-227.
Wu Y, Guo P, Zhang X, et al. Effect of microplastics exposure on the photosynthesis system of freshwater algae. J Hazard Mater. 2019;374:219-227.
Wu, Y., Guo, P., Zhang, X., Zhang, Y., Xie, S., & Deng, J. (2019). Effect of microplastics exposure on the photosynthesis system of freshwater algae. Journal of Hazardous Materials, 374, 219-227. https://doi.org/10.1016/j.jhazmat.2019.04.039
Wu Y, et al. Effect of Microplastics Exposure On the Photosynthesis System of Freshwater Algae. J Hazard Mater. 2019 07 15;374:219-227. PubMed PMID: 31005054.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of microplastics exposure on the photosynthesis system of freshwater algae. AU - Wu,Yanmei, AU - Guo,Peiyong, AU - Zhang,Xiaoyan, AU - Zhang,Yuxuan, AU - Xie,Shuting, AU - Deng,Jun, Y1 - 2019/04/12/ PY - 2018/12/05/received PY - 2019/03/06/revised PY - 2019/04/10/accepted PY - 2019/4/21/pubmed PY - 2020/9/4/medline PY - 2019/4/21/entrez KW - Chlorophyll a KW - Inhibition KW - Microplastics KW - Photosynthetic system KW - Phytoplankton SP - 219 EP - 227 JF - Journal of hazardous materials JO - J Hazard Mater VL - 374 N2 - Microplastics are widely distributed in freshwater environments. At present, most of the studies on the toxicity of microplastics are concentrated on aquatic feeding animals, but relatively few have addressed freshwater algae. This study investigated the effect of microplastics (polypropylene (PP) and polyvinyl chloride (PVC)) exposure on the photosynthetic system of freshwater algae over the logarithmic growth period. The results showed that both PVC and PP had a negative effect on chlorophyll a concentrations of Chlorella (C.) pyrenoidosa and Microcystis (M.) flos-aquae; among them, when the concentration of PVC exceeded 250 mg/L, compared with the control group, the chlorophyll a content of C. pyrenoidosa was reduced by 55.23%. For photosynthetic activity, higher concentrations of PVC and PP can induce lower values of Fv/Fm, Fv/F0, and Fv'/Fm', suggesting a larger impact in algae. However, algae were able to adjust, with increased values of Fv/Fm, Fv/F0, and Fv'/Fm'. This dose-negative effect phenomenon also exists in the study of the rapid light-response curves. In addition, comparing the two microplastics, we could see that PVC greatly inhibits the photosynthesis system of freshwater algae. Our study confirmed that microplastics can affect algae growth under certain concentrations, which provides evidence for understanding the risks of microplastics. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/31005054/Effect_of_microplastics_exposure_on_the_photosynthesis_system_of_freshwater_algae_ DB - PRIME DP - Unbound Medicine ER -