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Implication of microplastic toxicity on functioning of microalgae in aquatic system
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This review examined how microplastics interact with and affect microalgae, which serve as primary producers in aquatic ecosystems. Researchers analyzed the toxic effects of both single and mixed plastic particles on microalgae cells, including impacts on photosynthesis, growth, and cellular function. The study highlights that microplastic toxicity to microalgae could have cascading effects throughout aquatic food webs.
Microplastics (MPs) released from both primary and secondary sources affect the functioning of aquatic system. These MPs and components leached, can interact with aquatic organisms of all trophic levels, including the primary producers, such as microalgae. Considering the ecological value of microalgae and the toxicological effects of MPs towards them, this review provides: (1) a detailed understanding of the interactions between MPs and microalgae in the complex natural environment; (2) a discussion about the toxic effects of single type and mixtures of plastic particles on the microalgae cells, and (3) a discussion about the impacts of MPs on various features of microalgae -based bioremediation technology. For this purpose, toxic effects of MPs on various microalgal species were compiled and plastic components of MPs were ranked on the basis of their toxic effects. Based on available data, ranking for various plastic components was found to be: Polystyrene (PS) (rank 1) > Polyvinyl Chloride (PVC) > Polypropylene (PP) > Polyethylene (PE) (rank 4). Furthermore, the review suggested the need to understand joint toxicity of MPs along with co-contaminants on microalgae as the presence of other pollutants along with MPs might affect microalgae differently. In-depth investigations are required to check the impact of MPs on microalgae-based wastewater treatment technology and controlling factors.
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This critical review examines how microplastics affect microalgae populations, which are essential primary producers at the base of aquatic food webs. Researchers found that microplastics can reduce algal growth, impair photosynthesis, and cause oxidative stress, with effects varying by plastic type, size, and concentration. The study highlights that harm to microalgae from plastic pollution could have cascading effects throughout entire aquatic ecosystems.
Effects of microplastics on freshwater and marine microalgae
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Microplastic toxicity in marine microalgae: an ecotoxicological synthesis of experimental biological responses
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This review summarizes 43 experimental studies on how microplastics affect marine microalgae, tiny ocean organisms that form the base of marine food webs. Researchers found most studies focused on polystyrene and polyethylene particles, measuring effects on growth, cell stress, and photosynthesis. Gaps remain in studying DNA damage, particle clumping, and long-term, realistic exposure conditions.
Micro/nano-plastics and microalgae in aquatic environment: Influence factor, interaction, and molecular mechanisms.
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This review examined the interactions between micro/nanoplastics and microalgae in aquatic environments, summarizing how plastic particle size, surface chemistry, and co-pollutants influence algal toxicity through oxidative stress, photosynthesis inhibition, and gene expression changes.
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