Bioaccumulation and phytotoxicity of ZnO nanoparticles in soil-grown Brassica chinensis L. and potential risks

被引：33

作者：

Shen, Meimei ^{[1
,3
]}

Liu, Weitao ^{[1
]}

Zeb, Aurang ^{[1
]}

Lian, Jiapan ^{[1
]}

Wu, Jiani ^{[1
]}

Lin, Maohong ^{[2
]}

机构：

[1] Nankai Univ, MOE Key Lab Pollut Proc & Environm Criteria, Tianjin Key Lab Urban Ecol Environm Remediat & Po, Coll Environm Sci & Engn, Tianjin 300350, Peoples R China

[2] Foshan Environm Protect Investment Ltd Co, Foshan 528051, Peoples R China

[3] Hebei Petr Univ Technol, Hebei 067000, Peoples R China

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2022年 / 306卷

基金：

中国国家自然科学基金;

关键词：

ZnO nanoparticles; Pakchoi; Accumulation; Oxidative response; Health risk; ZINC-OXIDE NANOPARTICLES; SUBCELLULAR-DISTRIBUTION; CHEMICAL FORMS; HEAVY-METALS; ACCUMULATION; CADMIUM; LEAD; BIOAVAILABILITY; DETOXIFICATION; TRANSLOCATION;

D O I：

10.1016/j.jenvman.2022.114454

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Zinc oxide nanoparticles (ZnO NPs) widely used have caught the attention of researchers, nevertheless, phyto-toxicity, bioaccumulation, and potential risks thereof to the green leafy still have knowledge defects. A pot experiment was intended to cultivate pakchoi (Brassica chinensis L.) following root exposure to ZnO NPs and Zn2+. ZnO NPs promoted plant growth and Zn accumulation, formed a dose-dependent effect on chlorophyll and carotenoids, and induced fluctuations in antioxidant enzyme activities and alleviated the oxidative damage of pakchoi. Particularly, 1000 mg kg(-1) ZnO NPs resulted in malondialdehyde (MDA) content of pakchoi shoots that was 87% higher than control. TEM was used to observe ZnO NPs of root cells and found that its possible way to enter the plant was endocytosis. Research on the content of several co-existing nutrients showed that 100 mg kg(-1) ZnO NPs significantly (p < 0.05) promoted the absorption of Ca, P and Fe by pakchoi shoots. In parallel, the hazard quotient (HQ) was used to assess the potential health risk of ZnO NPs.

引用

页数：8

共 55 条

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