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Effects of polyethylene and polylactic acid microplastics on plant growth and bacterial community in the soil

Journal of Hazardous Materials 2022 257 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count. Score: 65 ? 0–100 AI score estimating relevance to the microplastics field. Papers below 30 are filtered from public browse.

Ruiying Shi, Aurang Zeb, Aurang Zeb, Qi Wang, Qi Wang, Qi Wang, Qi Wang, Aurang Zeb, Aurang Zeb, Ruiying Shi, Ruiying Shi, Cordelia Sealy, Jiantao Li, Yuhang Lian, Ruiying Shi, Yuhang Lian, Ruiying Shi, Ruiying Shi, Yuhang Lian, Yuhang Lian, Cordelia Sealy, Aurang Zeb, 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, Ruiying Shi, Aurang Zeb, Yuhang Lian, Jiantao Li, Yuhang Lian, Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Weitao Liu, Ruiying Shi, Ruiying Shi, Ruiying Shi, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Aurang Zeb, Jingchun Tang Jingchun Tang Weitao Liu, Ruiying Shi, Weitao Liu, Weitao Liu, Ruiying Shi, Weitao Liu, Aurang Zeb, Yuhang Lian, Yuhang Lian, Yuhang Lian, Weitao Liu, Yuhang Lian, Aurang Zeb, Aurang Zeb, Yuhang Lian, Aurang Zeb, Weitao Liu, Yuhang Lian, Yuhang Lian, Qi Wang, Yuhang Lian, Jingchun Tang Aurang Zeb, Weitao Liu, Aurang Zeb, Jingchun Tang Weitao Liu, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Aurang Zeb, Qi Wang, Qi Wang, Ruiying Shi, Ruiying Shi, Ruiying Shi, Ruiying Shi, Weitao Liu, Weitao Liu, Weitao Liu, Weitao Liu, Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Yuhang Lian, Yuhang Lian, Yuhang Lian, Yuhang Lian, Jingchun Tang Ruiying Shi, Qi Wang, Jingchun Tang Aurang Zeb, Jingchun Tang Jingchun Tang Jingchun Tang Aurang Zeb, Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Jingchun Tang Yuhang Lian, Qi Wang, Qi Wang, Qi Wang, Ruiying Shi, Yuhang Lian, Aurang Zeb, Qi Wang, Aurang Zeb, Qi Wang, Aurang Zeb, Yuhang Lian, Qi Wang, Qi Wang, Qi Wang, Qi Wang, Weitao Liu, Yuhang Lian, Ruiying Shi, Yuhang Lian, Ruiying Shi, Cordelia Sealy, Weitao Liu, Jingchun Tang Ruiying Shi, Aurang Zeb, Jingchun Tang Aurang Zeb, Jingchun Tang Qi Wang, Jiantao Li, Jingchun Tang Aurang Zeb, Jiantao Li, Zeqi Zheng, Qi Wang, Jingchun Tang Zeqi Zheng, Cordelia Sealy, Jingchun Tang Ruiying Shi, Aurang Zeb, Qi Wang, Jiantao Li, Aurang Zeb, Ruiying Shi, Yuhang Lian, Yuhang Lian, Zeqi Zheng, Cordelia Sealy, Cordelia Sealy, Zeqi Zheng, Zeqi Zheng, Weitao Liu, Ruiying Shi, Jingchun Tang Jiantao Li, Ruiying Shi, Jingchun Tang Zeqi Zheng, Aurang Zeb, Qi Wang, Jingchun Tang Ruiying Shi, Cordelia Sealy, Qi Wang, Jiantao Li, Jingchun Tang Weitao Liu, Yuhang Lian, Cordelia Sealy, Weitao Liu, Weitao Liu, Yuhang Lian, Jiantao Li, Jiantao Li, Weitao Liu, Zeqi Zheng, Zeqi Zheng, Zeqi Zheng, Jingchun Tang Zeqi Zheng, Zeqi Zheng, Jiantao Li, Cordelia Sealy, Weitao Liu, Jiantao Li, Zeqi Zheng, Jingchun Tang Cordelia Sealy, Jingchun Tang Zeqi Zheng, Weitao Liu, Zeqi Zheng, Zeqi Zheng, Yuhang Lian, Qi Wang, Yuhang Lian, Weitao Liu, Weitao Liu, Qi Wang, Jingchun Tang

Summary

Researchers compared the effects of regular polyethylene and biodegradable polylactic acid microplastics on soybean growth and soil bacteria. Surprisingly, the biodegradable microplastics caused more harm than conventional ones, significantly reducing root growth and altering soil bacterial communities important for nitrogen fixation. This finding challenges the assumption that biodegradable plastics are always safer for the environment and raises questions about their impact on food crops.

Polymers

PE PLA

Microplastics (MPs), especially biodegradable MPs (BMPs) have attracted increasing attention in recent years. However, the effects of MPs with different biodegradability on the soil-plant systems are not well explored. In this study, the effects of polyethylene MPs (PEMPs) and polylactic acid MPs (PLAMPs) on physio-biochemical performance and metabolomic profile of soybean (Glycine max), as well as the bacterial communities in soil were investigated. Our results showed that PEMPs had no noticeable toxicity on the plant growth, while 0.1% PLAMPs significantly decreased the root length by 27.53% when compared with the control. The peroxidase (POD) activity was reduced and catalase (CAT) activity was increased by MPs in plant leaves. The metabolomics study suggested that the significantly affected metabolic pathway is amino acid metabolism. Additionally, Shannon and Simpson indices of rhizosphere soil were changed only under 0.1% PLAMPs. The key bacteria involved in the dinitrogen fixation were also altered. This study provides a novel insight into the potential effects of MPs with different biodegradability on soil-plant systems and highlights that BMPs might have stronger negative effects for terrestrial ecosystem, which needs to be further explored in future research.

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