Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, College of Resources and Environmental Sciences, China Agricultural University, Beijing, 100193, China.
BNU-HKUST Laboratory of Green Innovation, Advanced Institute of Natural Sciences, Beijing Normal University at Zhuhai, Zhuhai, 519087, China.
Environ Sci Pollut Res Int. 2023 Feb;30(7):18880-18889. doi: 10.1007/s11356-022-23559-8. Epub 2022 Oct 11.
Since less attention has been paid to the physiological effects of manganese-based nanomaterials (Mn-based NMs) on plants, it is necessary to explore the application of Mn-based NMs in improving crop yield and the concentration range of Mn-based NMs that produce toxicity. The results showed that soil application of 100 mg/kg manganese oxide (MnO) and manganese tetroxide (MnO) NMs could increase the shoot height of soybean by 51.8% and 31.8%, respectively, compared with the control. In addition, 100 mg/kg MnO NMs increased catalase (CAT) activity in roots by 62.2%, and 50 mg/kg MnO NMs increased CAT activity in roots by 200%, thereby increasing the stress resistance of soybean. However, at the highest concentration of 500 mg/kg, Mn-based NMs increased the Mn content in soybean extremely so that the absorption of mineral elements such as potassium, phosphorus, and calcium in the root was inhibited. This research lays the foundation for the safe application of Mn-based NMs in agriculture, benefiting the development of nanotechnology and agriculture globally.
由于人们对锰基纳米材料（Mn 基 NM）对植物的生理影响关注较少，因此有必要探索 Mn 基 NM 在提高作物产量和产生毒性的 Mn 基 NM 浓度范围方面的应用。结果表明，与对照相比，土壤中施用 100mg/kg 氧化锰（MnO）和四氧化锰（MnO 2）纳米颗粒可分别使大豆株高增加 51.8%和 31.8%。此外，100mg/kg 的 MnO 纳米颗粒使根中的过氧化氢酶（CAT）活性增加了 62.2%，而 50mg/kg 的 MnO 纳米颗粒使根中的 CAT 活性增加了 200%，从而提高了大豆的抗逆性。然而，在最高浓度 500mg/kg 时，Mn 基 NM 使大豆中的 Mn 含量极度增加，从而抑制了根对钾、磷和钙等矿物质元素的吸收。这项研究为 Mn 基 NM 在农业中的安全应用奠定了基础，有利于全球纳米技术和农业的发展。
