氮气
铜
纳米颗粒
同化(音韵学)
化学
固氮
营养物
农学
材料科学
生物
纳米技术
有机化学
语言学
哲学
作者
Yaozu Guo,Hao Li,Yi Hao,Heping Shang,Weili Jia,Anqi Liang,Xinxin Xu,Chunyang Li,Chuanxin Ma
出处
期刊:Nanomaterials
[MDPI AG]
日期:2024-04-25
卷期号:14 (9): 746-746
被引量:2
摘要
Nanoscale agrochemicals have been widely used in sustainable agriculture and may potentially affect the nitrogen fixation process in legume crops. The present study investigated the size-effects of copper oxide nanoparticles (CuO NPs) on nitrogen assimilation in soybean (G. max (L.) Merrill) plants, which were treated with different sizes (20 and 50 nm) of CuO NPs at low use doses (1 and 10 mg/kg) for 21 days under greenhouse conditions. The results showed that 50 nm CuO NPs significantly increased the fresh biomass more than 20 nm CuO NPs achieved at 10 mg/kg. The activities of N assimilation-associated enzymes and the contents of nitrogenous compounds, including nitrates, proteins, and amino acids, in soybean tissues were greatly increased across all the CuO NP treatments. The use doses of two sizes of CuO NPs had no impact on the Cu contents in shoots and roots but indeed increased the Cu contents in soils in a dose-dependent fashion. Overall, our findings demonstrated that both 20 and 50 nm CuO NPs could positively alter soybean growth and boost N assimilation, furthering our understanding that the application of nanoscale micro-nutrient-related agrochemicals at an optimal size and dose will greatly contribute to increasing the yield and quality of crops.
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