Effects of Stabilized Nanoparticles of Copper, Zinc, Manganese, and Iron Oxides in Low Concentrations on Lettuce (Lactuca sativa) Seed Germination: Nanotoxicants or Nanonutrients?

被引：185
作者：
Liu, Ruiqiang [1 ]
Zhang, Huiying [1 ,2 ]
Lal, Rattan [1 ]
机构：
[1] Ohio State Univ, Sch Environm & Nat Resources, Carbon Management & Sequestrat Ctr, Columbus, OH 43210 USA
[2] Hechi Univ, Sch Chem & Biol Engn, Yizhou 546300, Guangxi, Peoples R China
来源：
WATER AIR AND SOIL POLLUTION | 2016年 / 227卷 / 01期
关键词：
Nanoparticles; Nanotoxicity; Nanofertilizer; Phytotoxicity; Lettuce; Agriculture; ZNO NANOPARTICLES; ENGINEERED NANOMATERIALS; CUO NANOPARTICLES; VIGNA-RADIATA; PHYTOTOXICITY; TOXICITY; BIOACCUMULATION; ECOTOXICITY; STRESS; GROWTH;
D O I：
10.1007/s11270-015-2738-2
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Information on the phytotoxicity of nanoparticles (NPs) at low concentrations (e.g., ppb to low ppm) is scarce. Therefore, this study was conducted to assess the effects of laboratory-prepared Cu, Zn, Mn, and Fe oxide NPs in low concentrations (< 50 ppm) on the germination of lettuce (Lactuca sativa) seeds in a water medium. The data showed that CuO NPs were slightly more toxic than Cu ions while the toxicity of ZnO NPs was similar to that of Zn ions, and MnOx NPs and FeOx NPs were not only less toxic than their ionic counterparts but also significantly stimulated the growth of lettuce seedlings by 12-54 %. This study showed that manufactured NPs were not always more toxic than other chemical species containing the same elements. Instead, Mn or Fe NPs can significantly enhance plant growth and have the potential to be effective nanofertilizers for increasing agronomic productivity.
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页数：14
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