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Effects of titanium oxide nanoparticles and 24-epibrassinosteroid to mitigate the toxicity of cadmium (Cd) and improve physio-morphological traits of soybean (Glycine max L.) cultivated under Cd-contaminated soil

文献类型: 外文期刊

作者: Haider, Fasih Ullah 1 ; Zulfiqar, Usman 3 ; Noor-ul- Ain 4 ; Mehmood, Tariq 5 ; Shahzad, Babar 6 ; Cai, Liqun 1 ; Yong, Jean Wan Hong 7 ; Binobead, Manal Abdulaziz 8 ;

作者机构: 1.Gansu Agr Univ, Coll Resources & Environm Sci, Lanzhou, Peoples R China

2.Chinese Acad Sci, Key Lab Vegetat Restorat & Management Degraded Eco, South China Bot Garden, Guangzhou 510650, Peoples R China

3.Islamia Univ Bahawalpur, Fac Agr & Environm, Dept Agron, Bahawalpur, Pakistan

4.Chinese Acad Agr Sci, Agr Genom Inst Shenzhen, Genome Anal Lab Minist Agr, Shenzhen Branch,Guangdong Lab Lingnan Modern Agr, Shenzhen 518120, Peoples R China

5.Leibniz Inst Agr Engn & Bioecon ATB, Dept Sensors & Modeling, Max-Eyth-Allee 100, D-14469 Potsdam, Germany

6.La Trobe Univ Melbourne, Sch Agr Biomedine & Environm, Melbourne, Australia

7.Swedish Univ Agr Sci, Dept Biosyst & Technol, Alnarp, Sweden

8.King Saud Univ, Coll Food Sci & Agr, Dept Food Sci & Nutr, Riyadh, Saudi Arabia

关键词: Cd stress; Plant physiology; TiO2-NPs; 24-epiBRs; Crop productivity; Nanoparticles; Heavy metals; Hormones; Brassinosteriod

期刊名称:ENVIRONMENTAL TECHNOLOGY & INNOVATION ( 影响因子:7.1; 五年影响因子:7.1 )

ISSN: 2352-1864

年卷期: 2024 年 36 卷

页码:

收录情况: SCI

摘要: Cadmium (Cd) toxicity is a serious environmental threat to living organisms. Nanoparticles (NPs) and plant growth regulators are able to mitigate Cd toxicity and restore crop growth in heavy metals-contaminated soils. However, the synergistic potential of combining 24-epibrassinosteroid (24-epiBRs) and titanium oxide nanoparticles (TiO2-NPs) to alleviate Cd toxicity and restore soybean (Glycine max L.) production remains unexplored. Thus, a pot-based experimental trial was conducted to assess the effects of applying TiO2-NPs (15 mg L-1) and 24-epiBRs (10(-7) M), individually and in combination, on soybean growth in soil cultivated with 30 ppm of Cd. The study revealed that Cd toxicity significantly inhibited soybean root length (11.0 %), root dry biomass (63.5 %), root fresh biomass (84.9 %), shoot length (11.7 %), shoot dry biomass (49.0 %), and shoot fresh biomass (27.3 %), compared to the control. Additionally, the toxicity of Cd enhanced the oxidative stress and lowered the photosynthetic efficiency, gas exchange characteristics, and antioxidant defense system of soybeans. Interestingly, the combined application of TiO2-NPs and 24-epiBRs ameliorated the Cd toxic effects and improved the agronomic traits, photosynthesis efficiency, and antioxidant activity in soybeans by lowering oxidative stress. Specifically, the dual application of 24-epiBRs and TiO2-NPs effectively lowered the Cd levels in roots, shoots, and leaves of soybean plants by 62.5, 162.7, and 87.1 %, respectively, relative to the control soybean plants grown under Cd stress. Overall, the combined treatment of TiO2-NPs and 24-epiBRs synergistically reduced Cd uptake and restored soybean physiology in Cd-contaminated soils. Moving forward, further research should include field trials to assess the effectiveness and economic viability of this novel method.

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