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<p>Global warming and water scarcity persist as major global environmental challenges, and improving crop quality and drought tolerance is crucial for ensuring food security and human health. This study investigates the efficacy of manganese ferrite nanomaterials (MnFe<sub>2</sub>O<sub>4</sub> NMs) at different concentrations to mitigate drought stress in soybean (<i>Glycine max L.</i>) seedlings by both foliar and soil application. A pot experiment was conducted in this study with a blank control group (CK) and an ionic control group (CF). We revealed the mechanism by which MnFe<sub>2</sub>O<sub>4</sub> NMs enhance drought tolerance in soybeans by investigating their effects on phenotypic indexes, leaf relative water content, photosynthesis rate, antioxidant system and mineral element uptake. The key findings demonstrated that both foliar and soil application of MnFe<sub>2</sub>O<sub>4</sub> NMs alleviated drought stress, with shoot and root dry weights 1.26–1.29 and 1.06–1.17 times higher than those of CK-D, respectively. Besides, MnFe<sub>2</sub>O<sub>4</sub> NMs significantly enhanced photosynthetic efficiency and chlorophyll content, mitigated oxidative stress, and optimized the nutrient uptake and translocation. Therefore, MnFe<sub>2</sub>O<sub>4</sub> NMs can be used as a novel fertilizer to improve the utilization of traditional iron and manganese fertilizers, as well as a bioregulator to regulate enzyme activities and alleviate abiotic stresses in soybeans.</p>

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Alleviation Role of MnFe2O4 NMs for Soybeans Growth Under Drought Stress

  • 期刊论文

  • 发表日期：

    2025年7月15日

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  • Yanru Ding,
  • Muhammed Nadeem,
  • Taiming Zhang,
  • Yuanbo Li,
  • Yukui Rui

摘要

Global warming and water scarcity persist as major global environmental challenges, and improving crop quality and drought tolerance is crucial for ensuring food security and human health. This study investigates the efficacy of manganese ferrite nanomaterials (MnFe2O4 NMs) at different concentrations to mitigate drought stress in soybean (Glycine max L.) seedlings by both foliar and soil application. A pot experiment was conducted in this study with a blank control group (CK) and an ionic control group (CF). We revealed the mechanism by which MnFe2O4 NMs enhance drought tolerance in soybeans by investigating their effects on phenotypic indexes, leaf relative water content, photosynthesis rate, antioxidant system and mineral element uptake. The key findings demonstrated that both foliar and soil application of MnFe2O4 NMs alleviated drought stress, with shoot and root dry weights 1.26–1.29 and 1.06–1.17 times higher than those of CK-D, respectively. Besides, MnFe2O4 NMs significantly enhanced photosynthetic efficiency and chlorophyll content, mitigated oxidative stress, and optimized the nutrient uptake and translocation. Therefore, MnFe2O4 NMs can be used as a novel fertilizer to improve the utilization of traditional iron and manganese fertilizers, as well as a bioregulator to regulate enzyme activities and alleviate abiotic stresses in soybeans.