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Physiological Effects and Fluorescence Labeling of Magnetic Iron Oxide Nanoparticles on Citrus (Citrus reticulata) Seedlings

文献类型： 外文期刊

作者： Li, Junli 1 ; Hu, Jing 1 ; Xiao, Lian 1 ; Gan, Qiuliang 1 ; Wang, Yunqiang 3 ;

作者机构： 1.Wuhan Univ Technol, Sch Chem Chem Engn & Life Sci, Wuhan 430070, Hubei, Peoples R China

2.Hubei Engn Res Ctr RF Microwave Technol & Applica, Wuhan 430070, Hubei, Peoples R China

3.Hubei Acad Agr Sci, Inst Econ Crops, Wuhan 430064, Hubei, Peoples R China

关键词： gamma-Fe2O3 NPs;Citrus;Fluorescence labeling;Physiological effects;Oxidative stress

期刊名称：WATER AIR AND SOIL POLLUTION （ 影响因子：2.52； 五年影响因子：2.574 ）

ISSN： 0049-6979

年卷期： 2017 年 228 卷 1 期

页码：

收录情况： SCI

摘要： Nanoparticles (NPs) have been reported to cause physiological effects on plant cells and tissue. This study traced the uptake and distribution of magnetic iron oxide nanoparticles (gamma-Fe2O3 NPs) in citrus (Citrus reticulata) plants under hydroponic condition by fluorescent dye labeled gamma-Fe2O3 NPs, and described a detailed evidence of physiological effects of 0-100 mg/L gamma-Fe2O3 NPs on citrus plants by measuring the physiological parameters such as content of chlorophyll, malondialdehyde (MDA), soluble sugar, soluble protein, activity of antioxidant enzyme, and ferric reductase after 21 days exposure. Fluorescence images of citrus stem and root showed that citrus roots could absorb gamma-Fe2O3 NPs but no translocation from roots to shoots was observed, since NPs aggregated or even clogged the vascular system. Physiological results showed that 20 mg/L gamma-Fe2O3 NPs could significantly enhance chlorophyll content by 126.4%, while 50 and 100 mg/L of gamma-Fe2O3 NPs decreased chlorophyll content by 27.8 and 35.4%, respectively. MDA contents in citrus leaves under 20-100 mg/L gamma-Fe2O3 NPs exposure were increased by 37.8, 107.2, and 61.5%, respectively, while that in roots were decreased by 27.0,11.9, and 7.4%, respectively, with elevated SOD and CAT activity, suggesting that oxidative stress occurred in citrus leaves, but oxidative stress in roots was eliminated by antioxidant defense. It is noteworthy that although Fe(II)-EDTA treatment had a high level of chlorophyll content, it induced strong oxidative stress in citrus plants as well. Collectively, the various physiological responses of citrus plants to gamma Fe2O3 NPs exposure were closely correlated with the concentrations of NPs. gamma-Fe2O3 NPs at proper concentrations, such as 20 mg/L, have the potential to ameliorate chlorosis of plants and be effective nanofertilizers for increasing agronomic productivity.

  • 相关文献

[1]Uptake, translocation and physiological effects of magnetic iron oxide (gamma-Fe2O3) nanoparticles in corn (Zea mays L.). Li, Junli,Hu, Jing,Wu, Chan,Huang, Jin,Ma, Chuanxin,Xing, Baoshan,Wang, Yunqiang,Huang, Jin.

[2]Comparative impacts of iron oxide nanoparticles and ferric ions on the growth of Citrus maxima. Hu, Jing,Li, Junli,Gan, Qiuliang,Wang, Yunqiang,Guo, Huiyuan,Li, Junli,Xing, Baoshan.

[3]In vitro assessment of physiological changes of watermelon (Citrullus lanatus) upon iron oxide nanoparticles exposure. Wang, Yunqiang,Dai, Zhaoyi,Hu, Jing,Li, Junli,Huang, Jin.

[4]Comparative Analysis of Physiological Impact of gamma-Fe2O3 Nanoparticles on Dicotyledon and Monocotyledon. Hu, Jing,Wu, Chan,Li, Junli,Huang, Jin,Huang, Jin,Ren, Hongxuan,Wang, Yunqiang. 2018

[5]Comparative transcriptional profiling of orange fruit in response to the biocontrol yeast Kloeckera apiculata and its active compounds. Liu, Pu,Li, Guofeng,Liu, Pu,Chen, Kai,Long, Chao-an,Yang, Xiaoping. 2016

[6]Spatial Learning and Memory Impairment and Pathological Change in Rats Induced by Acute Exposure to Microcystin-LR. Li, Guangyu,Chen, Nan,Wang, Jianghua,Yan, Wei,Cai, Fei,Li, Cairong.

[7]mrskn7, a putative response regulator gene of Monascus ruber M7, is involved in oxidative stress response, development, and mycotoxin production. Shao, Yanchun,Chen, Fusheng,Yang, Sha,Zhang, Zhouwei,Zhou, Youxiang.

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