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Discrepancy of Growth Toxicity of Polystyrene Nanoplastics on Soybean (Glycine max) and Mung Bean (Vigna radiata)

Toxics 2024 6 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.

Le Zhang, Dan Su, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Wangwang Li, Wangwang Li, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Zhaowei Zhang, Wangwang Li, Zhaowei Zhang Wangwang Li, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Xiaoning Liu, Hui Cai, Xiaoning Liu, Hui Cai, Hui Cai, Xiaoning Liu, Zhaowei Zhang Zhaowei Zhang, Zhaowei Zhang, Zhaowei Zhang, Xiaoning Liu, Xiaoning Liu, Le Zhang, Zhaowei Zhang Zhaowei Zhang Zhaowei Zhang, Yuanlong Sun, Zhi‐Quan Tian, Zhi‐Quan Tian, Zhaowei Zhang, Zhi‐Quan Tian, Xiaoning Liu, Xiaoning Liu, Zhi‐Quan Tian, Zhaowei Zhang Zhaowei Zhang, Zhaowei Zhang Zhaowei Zhang, Zhaowei Zhang, Zhaowei Zhang

Summary

Researchers compared how polystyrene nanoplastics affect soybean and mung bean plants grown in water and found that both crops suffered root growth suppression, but through different biological pathways. Soybeans showed more oxidative stress at lower doses, while mung beans were more resilient and only showed significant damage at higher concentrations. The study reveals that different crop species can vary widely in their vulnerability to nanoplastic contamination.

Polymers

Nanoplastics, as a hot topic of novel contaminants, lack extensive concern in higher plants; especially the potential impact and mechanism of nanoplastics on legume crops remains elusive. In this study, the toxicity of polystyrene nanoplastics (PS-NPs, 200 nm) with diverse doses (control, 10, 50, 100, 200, 500 mg/L) to soybean and mung bean plants grown hydroponically for 7 d was investigated at both the macroscopic and molecular levels. The results demonstrated that the root length of both plants was markedly suppressed to varying degrees. Similarly, mineral elements (Fe, Zn) were notably decreased in soybean roots, consistent with Cu alteration in mung bean. Moreover, PS-NPs considerably elevated malondialdehyde (MDA) levels only in soybean roots. Enzyme activity data indicated mung bean exhibited significant damage only at higher doses of PS-NPs stress than soybean, implying mung bean is more resilient. Transcriptome analysis showed that PS-NPs stimulated the expression of genes associated with the antioxidant system in plant roots. Furthermore, starch and sucrose metabolism might play a key role in coping with PS-NPs to enhance soybean resistance, but the MAPK pathway was enriched in mung bean. Our findings provide valuable perspectives for an in-depth understanding of the performance of plants growing in waters contaminated by nanoplastics.

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