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Impact of polystyrene nanoplastics (PSNPs) on seed germination and seedling growth of wheat (Triticum aestivum L.)

Journal of Hazardous Materials 2019 667 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 60 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Jiapan Lian, Jiapan Lian, Xiangmiao Su, Jiapan Lian, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Jiani Wu, Aurang Zeb, Xiangmiao Su, Jiapan Lian, Jiani Wu, Jiapan Lian, Xiangmiao Su, Xiangmiao Su, Weitao Liu Weitao Liu Weitao Liu Aurang Zeb, Weitao Liu Weitao Liu Weitao Liu Weitao Liu Jiani Wu, Jiani Wu, Jiani Wu, Jiani Wu, Jiani Wu, Jiapan Lian, Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Weitao Liu Hongxia Xiong, Aurang Zeb, Aurang Zeb, Weitao Liu Aurang Zeb, Aurang Zeb, Aurang Zeb, Weitao Liu Aurang Zeb, Weitao Liu Weitao Liu Weitao Liu Aurang Zeb, Weitao Liu Weitao Liu Weitao Liu Xiangmiao Su, Hongxia Xiong, Jiapan Lian, Aurang Zeb, Jiani Wu, Weitao Liu Aurang Zeb, Jiapan Lian, Aurang Zeb, Aurang Zeb, Jiapan Lian, Aurang Zeb, Aurang Zeb, Jiani Wu, Aurang Zeb, Jiani Wu, Aurang Zeb, Aurang Zeb, Jiani Wu, Weitao Liu Weitao Liu Weitao Liu Jiani Wu, Weitao Liu Jiapan Lian, Aurang Zeb, Aurang Zeb, Aurang Zeb, Jiapan Lian, Jiapan Lian, Aurang Zeb, Aurang Zeb, Jiani Wu, Tianzhi Yang, Aurang Zeb, Weitao Liu Aurang Zeb, Aurang Zeb, Aurang Zeb, Xiangmiao Su, Jiapan Lian, Tianzhi Yang, Lijuan Su, Aurang Zeb, Jiapan Lian, Weitao Liu Aurang Zeb, Jiapan Lian, Weitao Liu Weitao Liu Weitao Liu Tianzhi Yang, Weitao Liu Weitao Liu Jiapan Lian, Weitao Liu Weitao Liu Weitao Liu

Summary

Researchers exposed wheat seeds and seedlings to polystyrene nanoplastics and found that while germination rates were unaffected, root growth increased significantly compared to controls. However, the nanoplastics were taken up by the roots and transported to the shoots, reducing micronutrient absorption and altering key metabolic pathways related to energy and amino acid production. The findings suggest that nanoplastics can fundamentally change how crop plants grow and process nutrients.

Polymers

Microplastics and nanoplastics are emerging pollutants of global concern. However, the understanding of their ecological effects on terrestrial plants is still limited. We conducted the systematic research to reveal the impact of polystyrene nanoplastics (PSNPs) (0.01-10 mg/L) on seed germination and seedling growth of wheat (Triticum aestivum L.). The results showed that PSNPs had no discernible effect on seed germination rate whereas significantly (p < 0.01) increased root elongation by 88.6 %-122.6 % when compared with the control. Similarly, remarkable increases in carbon, nitrogen contents, and plant biomass were also observed after exposure to PSNPs. Moreover, PSNPs could reduce the shoot to root biomass ratio (S:R ratio) of wheat seedlings. Furthermore, the imagings of a 3D laser confocal scanning microscopy (LCSM) and scanning electron microscopy (SEM) indicated that PSNPs were taken up and subsequently down-top transported to shoot. The absorption and accumulation of four micronutrients (Fe, Mn, Cu and Zn) in wheat were generally reduced in varying degrees. Notably, metabolomics analysis revealed that all PSNPs treatments altered the leaf metabolic profiles mainly by regulating energy metabolisms and amino acid metabolisms. These findings are expected to provide new insights into the effects of PSNPs on crop plants.

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