Phenotypic and transcriptomic responses of the rotifer Brachionus koreanus by single and combined exposures to nano-sized microplastics and water-accommodated fractions of crude oil
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Title
- Phenotypic and transcriptomic responses of the rotifer Brachionus koreanus by single and combined exposures to nano-sized microplastics and water-accommodated fractions of crude oil
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Author(s)
- Jeong, C.-B.; Kang, H.-M.; Byeon, E.; Kim, M.-S.; Ha, S.Y.; Kim, M.; Jung, J.-H.; Lee, J.-S.
- KIOST Author(s)
- Kang, Hye Min(강혜민); Ha, Sung Yong(하성용); Kim, Moon Koo(김문구); Jung, Jee Hyun(정지현)
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Alternative Author(s)
- 강혜민; 하성용; 김문구; 정지현
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Publication Year
- 2021-08-15
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Abstract
- Sorption of organic pollutants on microplastics can be an alternative uptake route for organic pollutants in aquatic organisms. To assess the combined effects of microplastics and organic pollutants, we employed phenotypic and transcriptomic analyses to the responses of the marine rotifer Brachionus koreanus to environmentally relevant concentrations of nano-sized microplastic (0.05 & micro;m), water-accommodated fractions of crude oil, and binary mixtures thereof. Our multigenerational in vivo experiments revealed more than additive effects on population growth of B. koreanus in response to combined exposure, while a single exposure to nano-sized microplastic did not induce observable adverse effects. Synergistic transcriptome deregulation was consistently associated with dramatically higher numbers of differentially expressed genes, and increased gene expression was associated with combined exposure. The majority of synergistic transcriptional alteration was related to metabolism and transcription, with impaired reproduction resulting from energetic reallocation toward adaptation. As further supported by chemistry analysis for polycyclic aromatic hydrocarbons sorption on microplastic, our findings imply that nano-sized microplastics can synergistically mediate the effects of organic pollutants in aquatic organisms.
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ISSN
- 0304-3894
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URI
- https://sciwatch.kiost.ac.kr/handle/2020.kiost/41310
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DOI
- 10.1016/j.jhazmat.2021.125703
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Bibliographic Citation
- JOURNAL OF HAZARDOUS MATERIALS, v.416, 2021
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Publisher
- ELSEVIER
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Subject
- OXIDATIVE STRESS; MONOGONONT ROTIFER; MARINE-ENVIRONMENT; GENE; EXPRESSION; TOXICITY; BIOACCUMULATION; ECOTOXICOLOGY; NANOPLASTICS; ACTIVATION
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Keywords
- Microplastics; Nanoplastics; Synergistic effect; Organic pollutant; Water-accommodated fraction (WAF)
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Type
- Article
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Language
- English
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Document Type
- Article
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