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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.)

Shedding light on the mechanisms of absorption and transport of ZnO nanoparticles by plants via in vivo X-ray spectroscopy

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da Cruz, Tatiana N. M. [1] ; Savassa, Susilaine M. [1] ; Gomes, Marcos H. F. [1] ; Rodrigues, Eduardo S. [1] ; Duran, Nadia M. [1] ; de Almeida, Eduardo [1] ; Martinelli, Adriana P. [1] ; de Carvalho, Hudson W. P. [1]
Total Authors: 8
[1] Univ Sao Paulo, Ctr Energia Nucl Agr, BR-13416903 Piracicaba - Brazil
Total Affiliations: 1
Document type: Journal article
Source: ENVIRONMENTAL SCIENCE-NANO; v. 4, n. 12, p. 2367-2376, DEC 2017.
Web of Science Citations: 10

Several factors have contributed to bring pressure on agriculture. In this context, nanomaterial properties can be explored to design more efficient fertilizers and therefore increase productivity. In the present study, the roots of Phaseolus vulgaris were immersed in several nano ZnO dispersions for 48 h. The absorption and transport phenomena were in vivo monitored by X-ray fluorescence spectroscopy (XRF) and X-ray absorption spectroscopy (XAS). The nanoparticle size, concentration and coating with surfactants affected the rate of Zn release and therefore its uptake. In vivo X-ray absorption spectroscopy showed that Phaseolus vulgaris takes up Zn bound to both citrate and malate, while entire nanoparticles were only absorbed when roots were injured. X-ray fluorescence microanalysis unravelled that besides xylem bundles, root to shoot Zn transport can take place through the cortex. (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: 16/08589-1 - Evaluation of nanoparticles agglomeration and quality control of nutrient solution of plants in hydroponic cultivation
Grantee:Eduardo Santos Rodrigues
Support type: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 16/04611-2 - Evaluation of root absorption and displacement of ZnO nanoparticles in Phaseolis vulgaris (beans).
Grantee:Tatiana Nishida Máximo da Cruz
Support type: Scholarships in Brazil - Master
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