Bean Seedling Growth Enhancement Using Magnetite Nanoparticles

Autor(es)

Duran, Nadia M. ^[1] ; Medina-Llamas, Maria ^[2] ; Cassanji, Joao G. B. ^[1] ; de Lima, Rafael G. ^[1] ; de Almeida, Eduardo ^[1] ; Macedo, Willian R. ^[3] ; Mattia, Davide ^[2] ; Pereira de Carvalho, Hudson W. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Ctr Nucl Energy Agr CENA, Lab Nucl Instrumentat LIN, BR-13416000 Sao Paulo - Brazil

^[2] Univ Bath, Dept Chem Engn, Bath BA2 7AY, Avon - England

^[3] Univ Fed Vicosa, Inst Agr Sci, Crop Physiol & Metab Lab, Campus Rio Paranaiba, BR-38810000 Rio Paranaiba, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Agricultural and Food Chemistry; v. 66, n. 23, p. 5746-5755, JUN 13 2018.
• Citações Web of Science: 1

Resumo

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 Fe3O4 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 Fe3O4-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, Fe2+/Fe3+(aq) and bare Fe3O4 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 Fe3O4-PEG was the least harmful treatment to alpha-amylase. The growth promoted by the Fe(3)O(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. (AU)

• Processo FAPESP: 15/19121-8 - EMU concedido no processo 2015/05942-0: sistema de microfluorescência de Raios X
• Beneficiário: Hudson Wallace Pereira de Carvalho
• Linha de fomento: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 15/05942-0 - Investigação do metabolismo de nanomateriais absorvidos por plantas empregando-se espectroscopias vibracional e de Raios X
• Beneficiário: Hudson Wallace Pereira de Carvalho
• Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores