Molecular mechanisms of toxicity and detoxification in rice (Oryza sativa L.) exposed to polystyrene nanoplastics

Copyright © 2023. Published by Elsevier Masson SAS.

Bibliographische Detailangaben
Veröffentlicht in:Plant physiology and biochemistry : PPB. - 1991. - 199(2023) vom: 13. Juni, Seite 107605
1. Verfasser: Lu, Siyuan (VerfasserIn)
Weitere Verfasser: Huo, Zhongqi, Niu, Tingting, Zhu, Weize, Wang, Junyuan, Wu, Donghui, He, Chunguang, Wang, Yong, Zou, Lifang, Sheng, Lianxi
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Plant physiology and biochemistry : PPB
Schlagworte:Journal Article Molecular toxicity Nanoplastics Oxidative stress Phytotoxicity Plant response Microplastics Polystyrenes Antioxidants Hydrogen Peroxide BBX060AN9V
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520 |a Nanoplastics (NPs) are an emerging threat to higher plants in terrestrial ecosystems. However, the molecular of NP-related phytotoxicity remains unclear. In the present study, rice seedlings were exposed to polystyrene (PS, 50 nm) NPs at 0, 50, 100, and 200 mg/L under hydroponic conditions to investigate the induced physiological indices and transcriptional mechanisms. We found that 50, 100, and 200 mg/L PS significantly reduced root (53.05%, 49.61%, and 57.58%, respectively) and shoot (54.63%, 61.56%, and 62.64%, respectively) biomass as compared with the control seedlings. The activities of antioxidant enzymes, including catalase (CAT), peroxidase (POD), superoxide dismutase (SOD), and ascorbate peroxidase (APX), were significantly activated in all PS treatment groups, indicating that PS inhibited plant growth and induced oxidative stress. Transcriptome analyses showed that PS modulated the expression of the genes involved in cell detoxification, active oxygen metabolism, mitogen-activated protein kinase (MAPK), and plant hormone transduction pathways. Our study provides new insights into phytotoxicity by demonstrating the potential underlying toxicity of PS NPs in higher plants 
650 4 |a Journal Article 
650 4 |a Molecular toxicity 
650 4 |a Nanoplastics 
650 4 |a Oxidative stress 
650 4 |a Phytotoxicity 
650 4 |a Plant response 
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650 7 |a Polystyrenes  |2 NLM 
650 7 |a Antioxidants  |2 NLM 
650 7 |a Hydrogen Peroxide  |2 NLM 
650 7 |a BBX060AN9V  |2 NLM 
700 1 |a Huo, Zhongqi  |e verfasserin  |4 aut 
700 1 |a Niu, Tingting  |e verfasserin  |4 aut 
700 1 |a Zhu, Weize  |e verfasserin  |4 aut 
700 1 |a Wang, Junyuan  |e verfasserin  |4 aut 
700 1 |a Wu, Donghui  |e verfasserin  |4 aut 
700 1 |a He, Chunguang  |e verfasserin  |4 aut 
700 1 |a Wang, Yong  |e verfasserin  |4 aut 
700 1 |a Zou, Lifang  |e verfasserin  |4 aut 
700 1 |a Sheng, Lianxi  |e verfasserin  |4 aut 
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