ROS meditated paralytic shellfish toxins production changes of Alexandrium tamarense caused by microplastic particles

Li, Danrui; Liu, Qian; Zhao, Yirong; Lv, Mengchen; Tang, Xuexi; Zhao, Yan

doi:10.1016/j.envpol.2023.122702

Environmental Pollution

2023

DOI: 10.1016/j.envpol.2023.122702

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ROS meditated paralytic shellfish toxins production changes of Alexandrium tamarense caused by microplastic particles

Danrui Li,

Qian Liu,

Yirong Zhao

et al.

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2024

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Cited by 3 publications

References 45 publications

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Copper induces cytotoxicity in freshwater bivalve Anodonta woodiana hemocytes

Yan,

Chen,

Jiang

et al. 2024

Chemosphere

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Copper induces cytotoxicity in freshwater bivalve Anodonta woodiana hemocytes

Yan,

Chen,

Jiang

et al. 2024

Chemosphere

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Effects of salinity on naphthalene adsorption and toxicity of polyethylene microparticles on Artemia salina

Vianna de Pinho,

Celano,

Andrade

et al. 2024

Chemosphere

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The Effecting Mechanisms of 100 nm Sized Polystyrene Nanoplastics on the Typical Coastal Alexandrium tamarense

Li,

Liu,

et al. 2024

IJMS

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Due to the increase in nanoplastics (NPs) abundance in aquatic environments, their effects on phytoplankton have aroused large research attention. In this study, 100 nm sized polystyrene NPs were chosen to investigate their effecting performance and mechanisms on a typical dinoflagellates Alexandrium tamarense. The results indicated the population growth and photosynthetic efficiencies of A. tamarense were significantly inhibited by NPs exposure, as well as the increase in cellular total carotenoids and paralytic shellfish toxins (PSTs). Meanwhile, the cellar ROS levels increased, corresponding to the increased activities or contents of multiple antioxidant components, including SOD, CAT, GPX, GR, GSH and GSSG. The transcriptional results support the physiological–biochemical results and further revealed the down-regulation of genes encoding the light reaction centers (PSI and PSII) and up-regulation of genes encoding the antioxidant components. Up-regulation of genes encoding key enzymes of the Calvin cycle and glycolytic pathway together with the TCA cycle could accelerate organic carbon and ATP production for A. tamarense cells resistant to NPs stress. Finally, more Glu and acetyl-CoA produced by the enhanced GSH cycle and the glycolytic pathway, respectively, accompanied by the up-regulation of Glu and Arg biosynthesis genes supported the increase in the PST contents under NPs exposure. This study established a data set involving physiological–biochemical changes and gene information about marine dinoflagellates responding to NPs, providing a data basis for further evaluating the ecological risk of NPs in marine environments.

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ROS meditated paralytic shellfish toxins production changes of Alexandrium tamarense caused by microplastic particles

Cited by 3 publications

References 45 publications

Copper induces cytotoxicity in freshwater bivalve Anodonta woodiana hemocytes

Copper induces cytotoxicity in freshwater bivalve Anodonta woodiana hemocytes

Effects of salinity on naphthalene adsorption and toxicity of polyethylene microparticles on Artemia salina

The Effecting Mechanisms of 100 nm Sized Polystyrene Nanoplastics on the Typical Coastal Alexandrium tamarense

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