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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.)

In Vivo Evaluation of Zn Foliar Uptake and Transport in Soybean Using X-ray Absorption and Fluorescence Spectroscopy

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Author(s):
Gomes, Marcos H. F. [1] ; Machado, Bianca A. [1] ; Rodrigues, Eduardo S. [1] ; Montanha, Gabriel Sgarbiero [1] ; Rossi, Monica Lanzoni [1] ; Otto, Rafael [2] ; Linhares, Francisco S. [1] ; Carvalho, Hudson W. P. [1]
Total Authors: 8
Affiliation:
[1] Univ Sao Paulo, Ctr Nucl Energy Agr, BR-13416000 Piracicaba, SP - Brazil
[2] Univ Sao Paulo, Luiz de Queiroz Coll Agr, BR-13416000 Piracicaba, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Agricultural and Food Chemistry; v. 67, n. 44, p. 12172-12181, NOV 6 2019.
Web of Science Citations: 0
Abstract

Understanding the mechanisms of absorption and transport of foliar nutrition is a key step towards the development of advanced fertilization methods. This study employed X-ray fluorescence (XRF) and X-ray absorption near edge spectroscopy (XANES) to trace the in vivo absorption and transport of ZnO and ZnSO4 (aq) to soybean leaves (Glycine max). XRF maps monitored over 48 h showed a shape change of the dried ZnSO4 (aq) droplet, indicating Zn2+ absorption. Conversely, these maps did not show short movement of Zn from ZnO. XRF measurements on petioles of leaves that received Zn2+ treatments clarified that the Zn absorption and transport in the form of ZnSO4 (aq) was faster that of ZnO. Solubility was the major factor driving ZnSO4 (aq) absorption. XANES speciation showed that in planta Zn is transported coordinated with organic acids. Because plants demand Zn during their entire lifecycle, the utilization of sources with different solubilities can increase Zn use efficiency. (AU)

FAPESP's process: 18/13401-7 - X-ray spectroscopy unfolding the effects of glyphosate on soybean manganese foliar uptake
Grantee:Bianca de Almeida Machado
Support Opportunities: 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 Opportunities: Research Grants - Young Investigators Grants