Advanced fertilizers are one of the top requirements to address rising global food demand. This study investigates the effect of bare and polyethylene glycol-coated Fe 3O 4 nanoparticles on the germination and seedling development of Phaseolus vulgaris L. Although the germination rate was not affected by the treatments (1 to 1 000 mg Fe L -1), seed soaking in Fe 3O 4-PEG at 1 000 mg Fe L -1 increased radicle elongation (8.1 ± 1.1 cm vs 5.9 ± 1.0 cm for the control). Conversely, Fe 2+/Fe 3+ (aq) and bare Fe 3O 4 at 1 000 mg Fe L -1 prevented the growth. X-ray spectroscopy and tomography showed that Fe penetrated in the seed. Enzymatic assays showed that Fe 3O 4-PEG was the least harmful treatment to α-amylase. The growth promoted by the Fe 3O 4-PEG might be related to water uptake enhancement induced by the PEG coating. These results show the potential of using coated iron nanoparticles to enhance the growth of common food crops.
- Fe O nanoparticle
- Phaseolus vulgaris L.
- X-ray spectroscopy
- polyethylene glycol
ASJC Scopus subject areas
- Agricultural and Biological Sciences(all)
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- Centre for Advanced Separations Engineering (CASE)
- Centre for Sustainable and Circular Technologies (CSCT)
- Department of Chemical Engineering - Professor
- Water Innovation and Research Centre (WIRC)
- Centre for Nanoscience and Nanotechnology
- Faculty of Engineering and Design - Deputy Dean
Person: Research & Teaching