Enhancing lettuce yield via Cu/Fe-layered double hydroxide nanoparticles spraying

文献类型： 外文期刊

第一作者： Wu, Hongyang

作者： Wu, Hongyang;Wan, Xiaoyang;Li, Yang;Li, Qiang;Lu, Tao;Yu, Hongjun;Jiang, Weijie;Jiang, Weijie;Niu, Jiefei;Xu, Huimin;Zhang, Yu;Xue, Xian

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关键词： Layered double hydroxides; Lettuce; Phenotypic analysis

期刊名称：JOURNAL OF NANOBIOTECHNOLOGY （ 影响因子：10.2； 五年影响因子：11.5 ）

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年卷期： 2023 年 21 卷 1 期

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收录情况： SCI

摘要： Layered double hydroxides (LDHs) have been widely used in the field of plant engineering, such as DNA/RNA transformation and enhancing plant disease resistance. However, few studies have examined the direct effects of LDHs on plants and their potential utility as nanofertilizers. In this study, the retention capacity of Cu/Fe-layered double hydroxide nanoparticles (CuFe-LDHs) was assessed by comparative experiments on vegetables. The results showed that the retention of CuFe-LDHs in leafy vegetables was high, such as lettuce. Phenotypic analysis revealed that the fresh and dry weights of lettuce leaves were both increased by spraying 10-100 mu g/mL CuFe-LDHs. Using the optimal concentration of 10 mu g/mL, we conducted further experiments to elucidate the mechanism of CuFe-LDHs promoting lettuce growth. It was found that the application of CuFe-LDHs had a significant effect on growth and induced physiological, transcriptomic, and metabolomic changes, including an increase in the chlorophyll b content, net photosynthetic rate, and intercellular carbon dioxide concentration, as well as modifications in gene expression patterns and metabolite profiles. This work provides compelling evidence that CuFe-LDHs can efficiently adsorb on the surface of lettuce leaves through hydrogen bonding, promote lettuce growth, mitigate the toxicity of heavy metal ions compared to their raw materials at the same concentration and offer a molecular-scale insight into the response of leafy vegetables to CuFe-LDHs.

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