Magnetic (Fe3O4) Nanoparticles Reduce Heavy Metals Uptake and Mitigate Their Toxicity in Wheat Seedling

doi:10.3390/su9050790

	Magnetic (Fe3O4) Nanoparticles Reduce Heavy Metals Uptake and Mitigate Their Toxicity in Wheat Seedling
	Zhang P(张鹏); Konate, A; He, X; Zhang, ZY; Ma, YH; Zhang, P; Alugongo, GM; Rui, YK; He X(何潇); Zhang ZY(张智勇)
刊名	SUSTAINABILITY
	2017
卷号	9 期号:5 页码:790
关键词	alleviation heavy metals magnetic (Fe3O4) nanoparticles inhibition oxidative stress wheat
ISSN号	2071-1050
DOI	10.3390/su9050790
文献子类	Article
英文摘要	Heavy metal pollution is not only a hazard to living organisms but also an important worldwide environmental concern. Experiments were performed to investigate the physiological mechanisms of magnetic (Fe3O4) nanoparticles (nano-Fe3O4) mitigation of the toxicity of heavy metals (Pb, Zn, Cd and Cu) in wheat seedlings. All the Petri dishes with germinating seedlings (1d) were covered, sealed with parafilm, and placed in a dark growth chamber. All parameters (seedling growth inhibition, heavy metal accumulation, enzymatic activities, and reducing effects of nano-Fe3O4 on heavy metal toxicity) were analyzed only after five days. The results showed that the tested heavy metals significantly affected the growth of wheat seedling by decreasing root length, shoot length and even death at 10 mM concentration in the case of Cd and Cu. Heavy metals exposure also showed that superoxide dismutase (SOD) and peroxidases (POD) activities decreased significantly when the malondialdehyde (MDA) content was significantly higher in wheat seedlings. Addition of magnetic (Fe3O4) nanoparticles (2000 mg/L) in each heavy metal solution (1 mM) significantly decreased the growth inhibition and activated protective mechanisms to reduce oxidative stress induced by heavy metals in the wheat seedlings. The reducing effects of nano-Fe3O4 against heavy metals stress could be dependent on the increase in the enzyme activity (SOD and POD). Their protective role was confirmed by the decrease in MDA content. The alleviating effect of nano-Fe3O4 is associated with their adsorption capacity of heavy metals.
WOS关键词	ANTIOXIDANT ENZYME-ACTIVITIES ; CUCUMBER CUCUMIS-SATIVUS ; LIPID-PEROXIDATION ; CERIA NANOPARTICLES ; CADMIUM STRESS ; TRITICUM-AESTIVUM ; OXIDATIVE DAMAGE ; SALICYLIC-ACID ; ROOT-GROWTH ; ACCUMULATION
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:000404127800115
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/285226]
专题	高能物理研究所_多学科研究中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Zhang P,Konate, A,He, X,et al. Magnetic (Fe3O4) Nanoparticles Reduce Heavy Metals Uptake and Mitigate Their Toxicity in Wheat Seedling[J]. SUSTAINABILITY,2017,9(5):790.
APA	张鹏.,Konate, A.,He, X.,Zhang, ZY.,Ma, YH.,...&马宇辉.(2017).Magnetic (Fe3O4) Nanoparticles Reduce Heavy Metals Uptake and Mitigate Their Toxicity in Wheat Seedling.SUSTAINABILITY,9(5),790.
MLA	张鹏,et al."Magnetic (Fe3O4) Nanoparticles Reduce Heavy Metals Uptake and Mitigate Their Toxicity in Wheat Seedling".SUSTAINABILITY 9.5(2017):790.