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Article ? AI-assigned paper type based on the abstract. Classification may not be perfect — flag errors using the feedback button. Tier 2 ? Original research — experimental, observational, or case-control study. Direct primary evidence. Human Health Effects Sign in to save

Toxicity of polystyrene microplastics in freshwater algae Scenedesmus obliquus: Effects of particle size and surface charge

Toxicology Reports 2022 57 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.
Soupam Das, Soupam Das, Soupam Das, Soupam Das, Soupam Das, Soupam Das, Lokeshwari Natarajan, Lokeshwari Natarajan, Lokeshwari Natarajan, Swarnali Dey, Swarnali Dey, Soupam Das, Lokeshwari Natarajan, Soupam Das, Lokeshwari Natarajan, Lokeshwari Natarajan, Lokeshwari Natarajan, Lokeshwari Natarajan, Lokeshwari Natarajan, Soupam Das, Soupam Das, Soupam Das, Soupam Das, Soupam Das, Soupam Das, Soupam Das, Amitava Mukherjee, Amitava Mukherjee, Lokeshwari Natarajan, Rita Kundu, Rita Kundu, Rita Kundu, Rita Kundu, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Soupam Das, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Swarnali Dey, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Soupam Das, Natarajan Chandrasekaran Amitava Mukherjee, Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Soupam Das, Soupam Das, Lokeshwari Natarajan, Lokeshwari Natarajan, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Rita Kundu, Amitava Mukherjee, Natarajan Chandrasekaran Rita Kundu, Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Subhabrata Paul, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Natarajan Chandrasekaran Amitava Mukherjee, Subhabrata Paul, Natarajan Chandrasekaran Natarajan Chandrasekaran Rita Kundu, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Subhabrata Paul, Natarajan Chandrasekaran Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Amitava Mukherjee, Natarajan Chandrasekaran

Summary

Researchers investigated how polystyrene microplastics of different sizes and surface charges affect the freshwater algae Scenedesmus obliquus. The study found that smaller 1-micrometer particles caused greater oxidative stress, reduced photosynthetic effectiveness, and decreased membrane integrity compared to larger 12-micrometer particles, with effects being dose-dependent.

Polymers
PS
Study Type Environmental

Microplastics (MPs) are perpetual contaminants that are mostly generated by human activity and are deposited in aquatic ecosystem. MPs may react differently in aquatic organisms depending on their size, surface charge, and concentration. The current investigation examined the interactions of polystyrene (PS) microplastics (of varied charges and sizes) with , a unicellular phytoplankton. It is observed that 1 µm PS-MPs produced increased oxidative stress than 12 µm PS-MPs as indicated by total reactive oxygen species (ROS), superoxide and hydroxyl radical generation, and lipid peroxidation results. Additionally, decreased photosynthetic effectiveness, membrane integrity and esterase activity were also observed for the lower sized MPs. Antioxidant enzyme activities like superoxide dismutase (SOD) activity and catalase (CAT) activity correlated well with the oxidative stress generation in the cells. The effects by both the sizes of MPs were dose dependent in nature. Given the importance of a rapidly developing scientific literature on the effects of MPs in freshwater organisms, understanding the dynamics of interactions with lower-level organisms becomes very relevant.

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