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61,005 resultsShowing papers similar to Effects of microplastics on the growth, photosynthetic efficiency and nutrient composition in freshwater algae Chlorella vulgaris Beij
ClearEffects of different concentrations and particle sizes of microplastics on the full life history of freshwater Chlorella
Researchers investigated how polystyrene microplastics of different concentrations and particle sizes affect the complete life cycle of freshwater Chlorella algae. The study found that microplastics can inhibit algal growth by up to 68%, while also altering chlorophyll content and photosynthetic activity, indicating that microplastic pollution may pose significant risks to the base of aquatic food webs.
Toxicity Effects of Polystyrene Nanoplastics with Different Sizes on Freshwater Microalgae Chlorella vulgaris
Researchers tested how two sizes of polystyrene nanoplastics (50 nm and 70 nm) affected the common freshwater microalgae Chlorella vulgaris. Both sizes reduced algae growth, chlorophyll content, and photosynthetic activity in a dose-dependent manner, with the smaller particles causing more damage. Since microalgae form the base of aquatic food chains, their sensitivity to nanoplastics could have cascading effects on entire freshwater ecosystems.
Recent progress on the toxic effects of microplastics on Chlorella sp. in aquatic environments
This review summarizes research on how microplastics affect Chlorella, a type of green algae that forms the base of aquatic food chains. Microplastics can slow algae growth, cause oxidative stress, and disrupt photosynthesis, which matters for human health because damage to these foundational organisms can ripple up through the food web and affect the quality of water and seafood.
Phytoplankton response to polystyrene microplastics: Perspective from an entire growth period
Researchers tracked the effects of polystyrene microplastics on the green alga Chlorella pyrenoidosa across its entire growth cycle and found dose-dependent harm during early growth phases. The microplastics reduced photosynthetic activity and inhibited growth by up to 38%, though the algae showed some ability to recover in later growth stages. The study suggests that microplastics can meaningfully disrupt the growth of freshwater phytoplankton, which form the foundation of aquatic food webs.
Impacts of Microplastics on Photosynthetic Efficiency and Pigment Composition in Chlorella pyrenoidosa
Researchers evaluated how polyethylene and polystyrene microplastics at different concentrations affect photosynthesis and pigment composition in the microalga Chlorella pyrenoidosa over four days. They found that microplastic exposure impaired photosynthetic efficiency and altered chlorophyll and carotenoid levels. The study highlights the potential for microplastic pollution to disrupt primary producers at the base of aquatic food webs.
The toxic effects of polystyrene microplastics on freshwater algae Chlorella pyrenoidosa depends on the different size of polystyrene microplastics
Researchers tested how two sizes of polystyrene microplastics affect the freshwater alga Chlorella pyrenoidosa, an important organism at the base of aquatic food webs. They found that smaller microplastics caused more severe damage to algal growth, photosynthesis, and cellular health than larger ones, with effects worsening over time and at higher concentrations. The study demonstrates that microplastic size is a critical factor determining toxicity to aquatic phytoplankton.
Adverse effects of microplastics observed on the growth rate and health of the freshwater alga, Chlorella sp. 12.
This Australian collaborative project investigated the effects of microplastics on freshwater ecological communities. While abstract details were limited, the study is part of a broader effort to understand how microplastics affect the ecology of the Murray-Darling Basin river system.
Effect of microplastics and microplastic-metal combinations on growth and chlorophyll a concentration of Chlorella vulgaris
Researchers tested the effects of polystyrene microplastics alone and in combination with metals (copper, zinc, manganese) on the freshwater microalga Chlorella vulgaris. The study found that low microplastic concentrations had no significant impact, but higher concentrations reduced algal growth and chlorophyll content, with metal-microplastic combinations producing more pronounced effects.
Concentration dependent toxicity of microplastics to marine microalgae
Researchers exposed the marine microalga Chlorella sp. to polystyrene microplastics at concentrations of 10 and 50 mg/L, finding that even low concentrations inhibited growth and disrupted photosynthesis, while higher concentrations caused more pronounced oxidative stress.
Effect of microplastics exposure on the photosynthesis system of freshwater algae
Researchers investigated how polypropylene and polyvinyl chloride microplastics affect the photosynthesis system of freshwater algae and found that both types reduced chlorophyll content and impaired photosynthetic efficiency. The damage was concentration-dependent and worsened over the growth period. The study highlights that microplastic pollution in freshwater can harm algae, which form the base of aquatic food chains.
Microplastics and Heavy Metals Removal from Fresh Water and Wastewater Systems Using a Membrane
Researchers tested how polystyrene microplastics affect the growth, photosynthesis, and oxidative stress responses of freshwater microalgae Chlorella vulgaris. Smaller particles caused greater inhibition of growth and chlorophyll synthesis than larger ones.
The Effect of Polyethylene Microplastics on Growth and Antioxydant Response of Oscillatoria Princeps and Chlorella Pyrenoidosa
Researchers exposed two freshwater algae species to polyethylene microplastics of different sizes and found that the particles disrupted photosynthesis and altered antioxidant enzyme activity. Smaller microplastics generally caused more pronounced effects, and the two species responded differently to the stress. The findings suggest that microplastic pollution in freshwater environments could impair the growth of organisms at the base of aquatic food webs.
Influence of microplastics on microalgal performance during wastewater polishing
Researchers studied how five common types of microplastics affect the green alga Chlorella vulgaris during wastewater treatment. They found that while microplastics reduced algal metabolism and growth, the organism maintained its ability to effectively remove nutrients from wastewater. The study demonstrates that Chlorella vulgaris is a robust candidate for bioremediation of microplastic-contaminated wastewater, even under pollutant stress.
Polystyrene microplastics decrease accumulation of essential fatty acids in common freshwater algae
Scientists exposed the freshwater alga Chlorella sorokiniana to polystyrene microplastics and found significant reductions in essential omega-3 and omega-6 fatty acid content, suggesting microplastic contamination could reduce the nutritional quality of algae at the base of aquatic food webs.
Exploring biochemical responses and cellular adaptations of Chlorella sorokiniana to polyethylene microplastic exposure
Researchers exposed the freshwater microalgae Chlorella sorokiniana to varying concentrations of polyethylene microplastics and measured the effects on growth, pigments, and biochemical composition. They found that high concentrations inhibited growth by 50% and caused reductions in pigments, lipids, and carbohydrates, while protein content increased as a stress response. The study provides insights into how microplastic pollution may disrupt the base of freshwater food webs by affecting primary producers.
Toxic effects of polystyrene nanoplastics on microalgae Chlorella vulgaris: Changes in biomass, photosynthetic pigments and morphology
This study tested how polystyrene nanoplastics of three different sizes affect green algae and found a clear pattern: smaller particles were more toxic than larger ones. The smallest nanoplastics (90 nm) caused the greatest reductions in algal growth and photosynthetic pigments, along with visible changes in cell shape and increased clumping. The findings suggest that as plastics break down into ever-smaller particles in the environment, their potential for biological harm may increase.
The influence of microplastics on the toxic effects and biodegradation of bisphenol A in the microalgae Chlorella pyrenoidosa
Researchers found that polystyrene microplastics inhibited the biodegradation of bisphenol A (BPA) by the microalga Chlorella vulgaris, with combined exposure showing greater toxicity than either contaminant alone due to BPA adsorption onto microplastic surfaces.
The aging of microplastics exacerbates the damage to photosynthetic performance and bioenergy production in microalgae (Chlorella pyrenoidosa)
Researchers found that aged microplastics are significantly more toxic to freshwater algae than new microplastics, inhibiting growth by up to 45% and causing greater damage to photosynthesis and energy production. Since algae form the base of aquatic food chains, this heightened toxicity from weathered microplastics could cascade through ecosystems and ultimately affect the safety of freshwater resources that humans depend on.
Investigation of the toxic effects of different polystyrene micro-and nanoplastics on microalgae Chlorella vulgaris by analysis of cell viability, pigment content, oxidative stress and ultrastructural changes
Researchers examined the toxic effects of different-sized polystyrene micro- and nanoplastics on the microalga Chlorella vulgaris in long-term exposure tests. The study found that smaller particles (20 and 50 nm) caused greater reductions in cell viability and chlorophyll concentration than larger ones, with surface functionalization also influencing toxicity and ultrastructural damage.
Research advances on impacts micro/nanoplastics and their carried pollutants on algae in aquatic ecosystems: A review
This review examines how micro- and nanoplastics harm algae, which are the foundation of aquatic food chains, by slowing growth, reducing photosynthesis, and damaging cells. The effects are worse when microplastics carry other pollutants on their surfaces, creating a combined toxic effect. Since algae support the entire aquatic food web, damage to these organisms can ripple upward through fish and shellfish to affect the safety of seafood consumed by humans.
Effects of microplastics on freshwater and marine microalgae
This book chapter reviews the effects of microplastics on freshwater and marine microalgae, covering how different plastic types and sizes affect algal growth, photosynthesis, and reproduction. Microalgae form the base of aquatic food webs, so plastic-induced disruption to algal communities could have cascading effects throughout ecosystems.
Ecotoxicity of micro- and nanoplastics on aquatic algae: Facts, challenges, and future opportunities
This review provides a comprehensive assessment of how micro- and nanoplastics harm aquatic algae, which form the base of ocean and freshwater food chains. The toxic effects include reduced growth, oxidative stress, and disrupted photosynthesis, with nanoplastics generally causing more damage than larger particles. Since algae support the entire aquatic food web, their decline from plastic pollution could reduce the quality and safety of fish and shellfish consumed by people.
Do Biodegradable Microplastics Threaten Chlorella spp.? First Study in Indonesia Using Leachate Exposure
This study tested whether leachates from biodegradable microplastics harm Chlorella algae, which form the base of aquatic food chains. The results showed that even plastics marketed as eco-friendly can release chemicals that impair algae growth at sublethal levels. This is concerning because damage to these microscopic organisms can ripple through the entire food web, potentially affecting the fish and shellfish people eat.
Microplastics leachate may play a more important role than microplastics in inhibiting microalga Chlorella vulgaris growth at cellular and molecular levels
Researchers found that chemical compounds leaching from aged microplastics may be more harmful to algae than the microplastic particles themselves. UV-weathered polyethylene and PVC released substances that inhibited algae growth, caused oxidative stress, and altered gene expression more severely than direct particle exposure. The study suggests that the chemicals released by degrading microplastics deserve more attention as a source of aquatic toxicity.