We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Zinc oxide nanoparticles and polyethylene microplastics affect the growth, physiological and biochemical attributes, and Zn accumulation of rice seedlings
Summary
Researchers found that both zinc oxide nanoparticles and polyethylene microplastics disrupted growth, physiology, and zinc uptake in two rice cultivars, with nanoparticles having a stronger effect than microplastics, and responses varying by cultivar and dose.
Metal nanoparticles and microplastics are becoming important pollutants in agricultural fields, but there are few studies on the interaction of zinc oxide nanoparticles (ZnONPs) and polyethylene (PE) microplastics with rice seedlings. The two rice cultivars Xiangyaxiangzhan and Yuxiangyouzhan were grown at three ZnONP levels (0 mg L, 50 mg L, and 500 mg L) and three PE levels (0 mg L, 250 mg L, and 500 mg L), and the growth, physiological attributes, and Zn uptake of rice seedlings were measured. Result showed that the ZnONPs and PE treatment effects on the investigated parameters differed between the cultivars, whilst Yuxiangyouzhan produced 6.98% higher in mean total dry biomass than Xiangyaxiangzhan. The mean total dry biomass in Xiangyaxiagnzhan and Yuxiangyouzhan changed by 10.22-30.85% and - 11.74-25.58% under ZnONPs, respectively. The PE treatments reduced growth parameters in Xiangyaxiangzhan, whilst the 250 mg L PE treatment reduced the growth parameter of Yuxiangyouzhan. Besides, the ZnONP treatment had a stronger effect on rice seedling growth than the PE treatment. Furthermore, the ZnONPs modulated the physiological parameter in plant tissue of the two rice varieties. ZnONP treatment lead to the accumulation of Zn in plant tissue and the shoot Zn content was strongly related to shoot cellulose content. Overall, ZnONPs and PE treatments modulated the growth, physiological and biochemical attributes, and Zn uptake of rice seedlings, and the cultivars and dose effects could not be ignored.
Sign in to start a discussion.
More Papers Like This
Zinc ions enhance tolerance to nanoplastics stress in rice seedlings: Advancing the development and optimization of traditional zinc fertilizers
Researchers tested whether traditional zinc sulfate fertilizer could help rice seedlings tolerate polystyrene microplastic stress, as an alternative to zinc oxide nanoparticles which carry their own environmental risks. They found that appropriate zinc levels reduced oxidative damage through different mechanisms in shoots versus roots, restoring photosynthesis and development. The findings offer a practical, lower-risk strategy for protecting crops from microplastic contamination in agricultural soils.
Effects of microplastics on growth and metabolism of rice (Oryza sativa L.)
Researchers found that polystyrene and polyvinyl chloride microplastics inhibited rice growth and disrupted ionic homeostasis and antioxidant metabolism in a dose-dependent manner, with PVC microplastics causing more severe effects than polystyrene.
Co-exposure of maize to polyethylene microplastics and ZnO nanoparticles: Impact on growth, fate, and interaction
Researchers studied the combined effects of polyethylene microplastics and zinc oxide nanoparticles on maize growth in a pot experiment. The study found that co-exposure altered plant growth, the fate of nanoparticles in the soil-plant system, and the interaction between these two common agricultural contaminants, suggesting that microplastics can influence how other pollutants behave in crop production.
Multiomics analysis reveals a substantial decrease in nanoplastics uptake and associated impacts by nano zinc oxide in fragrant rice (Oryza sativa L.)
Researchers found that nano zinc oxide (nZnO) particles form aggregates with polystyrene nanoplastics in the root zone of fragrant rice, physically blocking nanoplastic uptake, while transcriptomic and metabolomic analyses revealed that nZnO also restored antioxidant defenses and rescued aroma compound biosynthesis that nanoplastics had disrupted.
Indole-3-acetic acid and zinc synergistically mitigate positively charged nanoplastic-induced damage in rice
Positively charged 80 nm polystyrene nanoplastics had the greatest impact on rice seedling growth, reducing dry biomass by 41% and root length by 46%, while supplemental zinc and indole-3-acetic acid together significantly alleviated the nanoplastic-induced growth inhibition.