We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Effects of Polypropylene Microplastics and Copper Contamination on Rice Seedling Growth
Summary
Researchers studied how polypropylene microplastics and copper contamination individually and jointly affect rice seedling growth in hydroponic conditions. The study found that microplastics alone slightly promoted growth, while copper inhibited it, and the combination reduced copper accumulation in seedlings compared to copper alone, suggesting complex interactions between these pollutants in agricultural settings.
This study investigates the effects of polypropylene microplastics (PP-MPs) and copper (Cu), applied individually and in combination, on the growth (root and shoot length, fresh and dry biomass), peroxidase (POD) activity, and Cu accumulation of rice seedlings. A hydroponic experiment was conducted with four treatments: control (CK), PP, Cu, and PP+Cu. Exposure to PP-MPs slightly promoted seedling growth, whereas Cu markedly inhibited growth and induced chlorosis. Compared with Cu alone, co-exposure to PP-MPs and Cu (PP+Cu) partially improved shoot growth and alleviated Cu-induced suppression of shoot POD activity. In contrast, root POD activity showed the strongest reduction under PP+Cu (91.7% decrease), revealing a pronounced root-shoot divergence in antioxidant responses. Moreover, total Cu accumulation in seedlings increased by 12.3% in PP+Cu relative to Cu alone, implying that PP-MPs may influence Cu bioavailability and/or internal partitioning. However, Cu speciation and subcellular distribution were not quantified in this study and should be examined in future work. Overall, PP-MPs may simultaneously enhance Cu uptake while partially mitigating shoot-level toxicity, underscoring the complexity of microplastic-metal co-contamination in rice seedling systems.
Sign in to start a discussion.
More Papers Like This
The Effects of Polystyrene Microplastics and Copper Ion Co-Contamination on the Growth of Rice Seedlings
Researchers studied how polystyrene microplastics and copper ions interact when both are present in the water supply of rice seedlings. They found that microplastics actually reduced copper toxicity by absorbing the metal ions, but both pollutants weakened the plant's antioxidant defenses. The study suggests that microplastics and heavy metals interact in complex ways in agricultural systems, with implications for crop health and food safety.
Combined Exposure to Polyethylene Microplastics and Copper Affects Growth and Antioxidant Responses in Rice Seedlings
Researchers exposed rice seedlings to polyethylene microplastics and copper both individually and in combination and found that microplastics significantly enhanced copper uptake, increasing accumulation by about 25% compared to copper alone. While microplastics alone had minimal effects on growth, the combined exposure intensified oxidative stress in roots and altered antioxidant defense responses. The study demonstrates that microplastics can increase the bioavailability and toxicity of heavy metals in agricultural crop systems.
Understanding the Role of Low-Dose Polystyrene Microplastic in Copper Toxicity to Rice Seed (Oryza sativa L.)
This study explored how polystyrene microplastics interact with copper toxicity in rice seeds. Researchers found that microplastics actually reduced copper's harmful effects by physically accumulating on seed coats and blocking copper absorption, lowering the amount of copper taken up by seedlings by about 34%. The findings highlight how microplastics can alter the way other environmental contaminants affect plants.
Exploration of Single and Co-Toxic Effects of Polypropylene Micro-Plastics and Cadmium on Rice (Oryza sativa L.)
Researchers investigated the single and combined toxic effects of polypropylene microplastics and cadmium on rice plants, finding that co-exposure altered cadmium bioavailability and produced compounded negative effects on plant growth and development.
Effects of Microplastics on the Mineral Elements Absorption and Accumulation in Hydroponic Rice Seedlings (Oryza sativa L.)
Researchers exposed rice seedlings to different concentrations of polyethylene microplastics in hydroponic conditions and measured the effects on mineral nutrient absorption. They found that while microplastics did not affect shoot growth, they significantly altered the uptake and distribution of essential mineral elements in the plants. The study suggests that microplastic contamination in agricultural settings could disrupt crop nutrition even without visible growth impacts.