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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Localization of Coated Iron Oxide (Fe3O4) Nanoparticles on Tomato Seeds and Their Effects on Growth

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Lau, Elizabeth C. H. T. [1] ; Carvalho, Lucas B. [2] ; Pereira, Anderson E. S. [2] ; Montanha, Gabriel S. [3] ; Correa, Camila G. [3] ; Carvalho, Hudson W. P. [3] ; Ganin, Alexey Y. [4] ; Fraceto, Leonardo F. [2] ; Yiu, Humphrey H. P. [1]
Total Authors: 9
[1] Heriot Watt Univ, Sch Engn & Phys Sci, Chem Engn, Edinburgh EH14 4AS, Midlothian - Scotland
[2] Sao Paulo State Univ UNESP, Inst Sci & Technol, BR-18087180 Sorocaba, SP - Brazil
[3] Univ Sao Paulo, Ctr Nucl Energy Agr, BR-13416000 Piracicaba, SP - Brazil
[4] Univ Glasgow, Sch Chem, Glasgow G12 8QQ, Lanark - Scotland
Total Affiliations: 4
Document type: Journal article
Source: ACS APPLIED BIO MATERIALS; v. 3, n. 7, p. 4109-4117, JUL 20 2020.
Web of Science Citations: 1

Food demand due to the growing global population has been stretching the agriculture sector to the limit. This demands the cultivation of plants in shrinking land areas which makes the search for highly effective systems for plant nutrition and pest control important. In this context, the application of nanoparticles (NPs) in agriculture can have a transformative effect on food production techniques as it can enable the delivery of bioactive agents (including growth factors, pesticides, and fungicides) directly to plants. Herein, we report the application of unfunctionalized as well as amine-functionalized and polycaprolactone-coated Fe3O4 NPs to seed treatment in tomato (Solanum lycopersicum). The study reveals that the treatment has no side effects on plant germination and development. Furthermore, the translocation of NPs in seeds and seedlings posttreatment depends on the surface functionalization of the NPs. X-ray fluorescence spectroscopy analysis of seedlings suggested that around 66% of unfunctionalized Fe3O4 NPs were translocated in the cotyledons, while only 50% of functionalized NPs (both amine and polycaprolactone) were translocated. Our results demonstrate that all particles were taken up by the seeds, thus suggesting that the functionalized NPs can act as a versatile platform for delivering of active compounds, such as fungicides and growth factor agents. (AU)

FAPESP's process: 15/19121-8 - Multi-User Equipment approved in grant 2015/05942-0: micro X-Ray Fluorescence system
Grantee:Hudson Wallace Pereira de Carvalho
Support type: Multi-user Equipment Program
FAPESP's process: 18/23608-8 - Development of labelled nanopesticides aiming studies of mechanism of action and toxicity
Grantee:Lucas Bragança de Carvalho
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 15/05942-0 - Shedding light on the metabolism of nanomaterials absorbed by plants with X-ray and vibrational spectroscopy
Grantee:Hudson Wallace Pereira de Carvalho
Support type: Research Grants - Young Investigators Grants
FAPESP's process: 18/02413-4 - Hybrid inorganic/organic nanomaterials aiming the study of the interaction of nanoparticles and plants
Grantee:Leonardo Fernandes Fraceto
Support type: Research Grants - Visiting Researcher Grant - International