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In vitro wheat protoplast cytotoxicity of polystyrene nanoplastics

The Science of The Total Environment 2023 22 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 55 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Huiqian Wang, Jia Wang, Xinhua Zhan Huiqian Wang, Jiahui Zhu, Jiahui Zhu, Huiqian Wang, Xinhua Zhan Jiahui Zhu, Jiahui Zhu, Jiahui Zhu, Huiqian Wang, Huiqian Wang, Dongru Wang, Yuan He, Yuan He, Dongru Wang, Yuan He, Jiahui Zhu, Jiawei Wang, Dongru Wang, Dongru Wang, Yuan He, Yuan He, Yuan He, Jiahui Zhu, Qiuping Zheng, Yuan He, Qiuping Zheng, Yuan He, Qiuping Zheng, Dongru Wang, Qiuping Zheng, Qiuping Zheng, Jia Wang, Yuan He, Huiqian Wang, Dongru Wang, Yuan He, Qiuping Zheng, Qiuping Zheng, Jia Wang, Qiuping Zheng, Dongru Wang, Yuan He, Dongru Wang, Yuan He, Jia Wang, Jia Wang, Qiuping Zheng, Jiawei Wang, Jiawei Wang, Jiawei Wang, Dongru Wang, Dongru Wang, Qiuping Zheng, Yuan He, Yuan He, Yuan He, Huiqian Wang, Yuan He, Jiawei Wang, Huiqian Wang, Jia Wang, Jiawei Wang, Xinhua Zhan Xinhua Zhan Jiawei Wang, Jiawei Wang, Xinhua Zhan Yuan He, Jiahui Zhu, Xinhua Zhan Xinhua Zhan Yuan He, Xinhua Zhan Yuan He, Jiawei Wang, Yuan He, Xinhua Zhan Jiawei Wang, Jiawei Wang, Jiawei Wang, Xinhua Zhan Xinhua Zhan Qiuping Zheng, Qiuping Zheng, Xinhua Zhan

Summary

Researchers investigated the cytotoxicity of amino- and carboxyl-modified polystyrene nanoparticles of different sizes on wheat plant cells (protoplasts) in vitro. The study found that 20 nm amino-modified particles were particularly damaging to cell structure, causing increased reactive oxygen species production and cell death, suggesting that surface modification and particle size significantly influence nanoplastic toxicity to plant cells.

Polymers

Body Systems

Cardiovascular

Study Type In vitro

Nanoplastics are an emerging environmental pollutant, having a potential risk to the terrestrial ecosystem. In the natural environment, almost all the micro-or nano-plastics will be aged by many factors and their characterizations of the surface will be modified. However, the toxicity and mechanism of the modified polystyrene nanoparticles (PS-NPs) to plant cells are not clear. In the study, the amino- and carboxyl-modified PS-NPs with different sizes (20 and 200 nm) were selected as the typical representatives to investigate their effects on protoplast cell viability, reactive oxygen species (ROS) production in the cell and the leakage of cell-inclusion and apoptosis. The results indicated that the 20 nm amino-modified PS-NPs (PS-20A) could significantly damage the structure of the cell, especially the cell membrane, chloroplast and mitochondrion. After being modified by amino group, smaller size nanoplastics had the potential to cause more severe damage. In addition, compared with carboxyl-modified PS-NPs, the amino-modified PS-NPs induced more ROS production and caused higher membrane permeability/lactate dehydrogenase (LDH) leakage. Apoptosis assay indicated that the proportion of viable cells in the PS-20A treatment decreased significantly, and the proportion of necrotic cells increased by four times. This study provides new insights into the toxicity and damage mechanism of PS-NPs to terrestrial vascular plants at the cellular level, and guides people to pay attention to the quality and safety of agricultural products caused by nanoplastics.

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