The impact of cerium oxide nanoparticles on the physiology of soybean (Glycine max (L.) Merr.) under different soil moisture conditions

被引：71
作者：
Cao, Zhiming [1 ]
Rossi, Lorenzo [1 ,2 ]
Stowers, Cheyenne [1 ]
Zhang, Weilan [1 ,3 ]
Lombardini, Leonardo [4 ]
Ma, Xingmao [1 ]
机构：
[1] Texas A&M Univ, Zachry Dept Civil Engn, College Stn, TX 77843 USA
[2] Missouri Univ Sci & Technol, Ctr Res Energy & Environm, Dept Civil Architectural & Environm Engn, Rolla, MO USA
[3] Hong Kong Univ Sci & Technol, Dept Civil & Environm Engn, Hong Kong, Hong Kong, Peoples R China
[4] Texas A&M Univ, Dept Hort Sci, College Stn, TX 77843 USA
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2018年 / 25卷 / 01期
关键词：
Cerium oxide nanoparticles; Soil moisture; Soybean; Surface charge; WATER-USE EFFICIENCY; CEO2; NANOPARTICLES; CLIMATE-CHANGE; SHORT-TERM; PHOTOSYNTHESIS; STRESS; WHEAT; CO2;
D O I：
10.1007/s11356-017-0501-5
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The ongoing global climate change raises concerns over the decreasing moisture content in agricultural soils. Our research investigated the physiological impact of two types of cerium oxide nanoparticles (CeO(2)NPs) on soybean at different moisture content levels. One CeO2NP was positively charged on the surface and the other negatively charged due to the polyvinylpyrrolidone (PVP) coating. The results suggest that the effect of CeO(2)NPs on plant photosynthesis and water use efficiency (WUE) was dependent upon the soil moisture content. Both types of CeO(2)NPs exhibited consistently positive impacts on plant photosynthesis at the moisture content above 70% of field capacity (theta(fc)). Similar positive impact of CeO(2)NPs was not observed at 55% theta(fc), suggesting that the physiological impact of CeO(2)NPs was dependent upon the soil moisture content. The results also revealed that V (Cmax) (maximum carboxylation rate) was affected by CeO(2)NPs, indicating that CeO(2)NPs affected the Rubisco activity which governs carbon assimilation in photosynthesis. In conclusion, CeO(2)NPs demonstrated significant impacts on the photosynthesis and WUE of soybeans and such impacts were affected by the soil moisture content.
引用
收藏
页码：930 / 939
页数：10
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