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Polystyrene nanoplastics alleviate the toxicity of CuO nanoparticles to the marine algae Platymonas helgolandica var. tsingtaoensis

Frontiers in Marine Science 2022 8 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 45 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Su-chun Wang, Wang-Chao Chu, Su-chun Wang, Wang-Chao Chu, Wang-Chao Chu, Feifei Liu Wang-Chao Chu, Feifei Liu, Feifei Liu, Wang-Chao Chu, Zhi-yin Gao, Zhi-yin Gao, Feifei Liu Feifei Liu, Su-chun Wang, Feifei Liu Wang-Chao Chu, Su-chun Wang, Feifei Liu Feifei Liu Zhi-yin Gao, Su-chun Wang, Su-chun Wang, Zhi-yin Gao, Zhi-yin Gao, Feifei Liu, Feifei Liu, Zhi-yin Gao, Wang-Chao Chu, Wang-Chao Chu, Feifei Liu, Feifei Liu, Feifei Liu, Su-chun Wang, Wang-Chao Chu, Wang-Chao Chu, Feifei Liu Feifei Liu Feifei Liu Su-chun Wang, Feifei Liu Feifei Liu Feifei Liu, Feifei Liu, Su-chun Wang, Feifei Liu, Feifei Liu Su-chun Wang, Su-chun Wang, Su-chun Wang, Feifei Liu Feifei Liu, Zhi-yin Gao, Zhi-yin Gao, Feifei Liu, Feifei Liu

Summary

Polystyrene nanoplastics were found to alleviate the toxicity of copper oxide nanoparticles to the marine microalga Chlorella vulgaris, likely by adsorbing copper ions onto their surface and reducing bioavailability. The antagonistic interaction highlights how co-occurring nanomaterials can unexpectedly modify each other's environmental toxicity.

Polymers

The increasing presence of pollutants such as engineered nanoparticles (ENPs) and nanoplastics (NPLs) poses potential risks to the marine environment. However, there is a scarcity of information on their joint toxic effects. In this study, we investigated the toxicity of copper oxide nanoparticles (nCuO) combined with polystyrene nanoplastics (PS-NPLs) on the marine microalgae Platymonas helgolandica var. tsingtaoensis . The inhibitory effect of nCuO increased with increasing concentrations, and nCuO ≥ 100 mg/L significantly restrained the growth and chlorophyll content of microalgae. nCuO could be adsorbed by algal cells, which was responsible for membrane lipid oxidation and the disruption of membrane permeability. Simultaneous exposure to nCuO and PS-NPLs had a.n antagonistic effect on the growth inhibition of the microalgae, and nCuO played a leading role in the joint toxicity of nCuO and PS-NPLs. In comparison to nCuO exposure alone, combined exposure decreased the oxidative stress and alleviated the increase in the cell membrane permeability of microalgae. PS-NPLs could heteroaggregate with nCuO, which reduced the interaction between nCuO and microalgae, inducing decreased joint toxicity. Findings of this study will clarify our understanding of the joint toxicity of ENPs and NPLs.

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