Phytotoxic Effects of Lanthanum Oxide Nanoparticles on Maize (Zea mays L.)

3rd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Liu, Yinglin^1 ; Xu, Lina^1 ; Dai, Yanhui^1

Key Laboratory of Marine Environment and Ecology, Ministry of Education, College of Environmental Science and Engineering, Ocean University of China, Qingdao

266100, China^1

关键词: Adverse effect;    Chlorophyll contents;    Maize (Zea mays L.);    Natural environments;    Net photosynthetic rate;    Oxide nanoparticles;    Phytotoxic effects;    Root biomass;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/113/1/012020/pdf
DOI  :  10.1088/1755-1315/113/1/012020

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The use of lanthanum oxide nanoparticles (La2O3NPs) in life products have increased dramatically in the past decades, which are inevitable released into natural environment. In this study, we determined the phytotoxicity of La2O3NPs to maize (Zea mays L.) grown in one-fourth strength Hoagland solution. After being exposed for two weeks, the biomass, roots length and the relative chlorophyll content were measured. La2O3NPs had phytotoxicity to maize at 5 mg/L. La2O3NPs decreased shoot biomass (≥10 mg/L), the root biomass and length (≥5 mg/L). Moreover, La2O3NPs had adverse effects on the chlorophyll content (≥10 mg/L). The decreased chlorophyll content may reduce net photosynthetic rate. This research offers vital information about the phytotoxicity of La2O3NPs.