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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.)

X-ray Spectroscopy Fostering the Understanding of Foliar Uptake and Transport of Mn by Soybean (Glycine max L. Merril): Kinetics, Chemical Speciation, and Effects of Glyphosate

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Author(s):
Machado, Bianca A. [1] ; Gomes, Marcos H. F. [1] ; Marques, Joao P. R. [1] ; Otto, Rafael [2] ; de Carvalho, Hudson W. P. [1]
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Ctr Nucl Energy Agr CENA, Lab Nucl Instrumentat LIN, BR-13416000 Piracicaba, SP - Brazil
[2] Univ Sao Paulo, Luiz de Queiroz Coll Agr ESALQ, Dept Soil Sci LSO, BR-13418900 Piracicaba, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Journal of Agricultural and Food Chemistry; v. 67, n. 47, p. 13010-13020, NOV 27 2019.
Web of Science Citations: 0
Abstract

Increasing the yield of soybean is a challenge to humankind dependent on several management practices, such as fertilizing and weed control. While glyphosate contributes to controlling weeds, it can interfere with spray mixture stability and, supposedly, complex with micronutrients within the plant tissue. This study investigated the effects of glyphosate on soybean foliar uptake and transport of Mn supplied as MnSO4, MnHPO3, Mn-ethylenediamine tetraacetic acid (EDTA), and MnCO3. These fertilizers induced ultrastructural changes in the leaf cuticle, regardless of the glyphosate mixture. Except for MnCO3, all tested sources increased the Mn content in the petiole. The mixture of glyphosate impaired Mn transport from MnSO4 and MnHPO3, but no evidence of Mn-glyphosate complexation within the plant was found. Manganese is rather transported in a similar chemical environment regardless of the source, except for Mn-EDTA, which was absorbed and transported in its pristine form. Interferences of glyphosate seem to be related to complexations in the tank mixture rather than affecting nutrients' metabolism. (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
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 Opportunities: Multi-user Equipment Program