School of Public Administration, Hohai University, Nanjing 211000, China; Observation Research Station of Land Ecology and Land Use in the Yangtze River Delta, Ministry of Natural Resources, Nanjing 210009, China.
Department of Environmental Sciences and Sustainability, College of Natural and Health Sciences, Zayed University, Abu Dhabi, 144534, United Arab Emirate.
Sci Total Environ. 2024 Dec 1;954:176304. doi: 10.1016/j.scitotenv.2024.176304. Epub 2024 Sep 16.
Nanotechnology is grabbing great attention all over the world because of its stimulating use in numerous fields, and the nanosilica (nSi) and carbon nanoparticles (CNPs) application has been examined in various studies. Conversely, the nSi and CNPs combinatorial use is a new method and researched in limited literature. For this purpose, a pot experiment was conducted to examine various growth and biochemical parameters in barley (Hordeum vulgare L.) under the toxic concentration of nickel (Ni) i.e., 200 mg kg which were primed with combined application of two NPs of nSi at 3 mM and CNPs i.e., 200 μM respectively. The results showed that the Ni toxicity in the soil showed a significantly (P < 0.05) declined in the growth, gas exchange attributes, sugars, AsA-GSH cycle, cellular fractionation, proline metabolism in H. vulgare. However, Ni toxicity significantly (P < 0.05) increased oxidative stress biomarkers, enzymatic and nonenzymatic antioxidants including their gene expression in H. vulgare. Although, the application of nSi and CNPs showed a significant (P < 0.05) increase in the plant growth and biomass, gas exchange characteristics, enzymatic and non-enzymatic compounds and their gene expression and also decreased the oxidative stress, and Ni uptake. In addition, individual or combined application of nSi and CNPs enhanced the cellular fractionation and decreases the proline metabolism and AsA-GSH cycle in H. vulgare. These results open new insights for sustainable agriculture practices and hold immense promise in addressing the pressing challenges of heavy metal contamination in agricultural soils.
纳米技术因其在众多领域的刺激应用而引起了全世界的关注，纳米二氧化硅（nSi）和碳纳米粒子（CNPs）的应用已在各种研究中得到了检验。相反，nSi 和 CNPs 的联合使用是一种新方法，在有限的文献中进行了研究。为此，进行了盆栽实验，以研究在土壤中镍（Ni）毒性浓度为 200mg/kg 时大麦（Hordeum vulgare L.）的各种生长和生化参数，该浓度用 nSi 两种 NPs 分别为 3mM 和 CNPs 即 200μM 的联合应用引发。结果表明，土壤中的 Ni 毒性在大麦的生长、气体交换特性、糖、AsA-GSH 循环、细胞分离、脯氨酸代谢方面显著下降（P<0.05）。然而，Ni 毒性在大麦中显著增加了氧化应激生物标志物、酶和非酶抗氧化剂及其基因表达。尽管 nSi 和 CNPs 的应用显著增加了植物的生长和生物量、气体交换特性、酶和非酶化合物及其基因表达，同时降低了氧化应激和 Ni 吸收。此外，nSi 和 CNPs 的单独或联合应用增强了细胞分离，降低了脯氨酸代谢和 AsA-GSH 循环在大麦中的作用。这些结果为可持续农业实践提供了新的见解，并在解决农业土壤中重金属污染的紧迫挑战方面具有巨大的潜力。
