| Texto completo | |
| Autor(es): |
Rodrigues, Eduardo S.
[1]
;
Gomes, Marcos H. F.
[1]
;
Duran, Nadia M.
[1]
;
Cassanji, Joao G. B.
[1]
;
da Cruz, Tatiana N. M.
[1]
;
Sant'Anna Neto, Analder
[2]
;
Savassa, Susilaine M.
[1]
;
de Almeida, Eduardo
[1]
;
Carvalho, Hudson W. P.
[1]
Número total de Autores: 9
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Ctr Nucl Energy Agr, Nucl Instrumentat Lab, Piracicaba - Brazil
[2] Univ Sao Paulo, Coll Agr Luiz de Queiroz, Dept Forest Sci, Physiol Trees Lab, Piracicaba - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | FRONTIERS IN PLANT SCIENCE; v. 9, NOV 14 2018. |
| Citações Web of Science: | 6 |
| Resumo | |
In vivo and micro chemical analytical methods have the potential to improve our understanding of plant metabolism and development. Benchtop microprobe X-ray fluorescence spectroscopy (mu-XRF) presents a huge potential for facing this challenge. Excitation beams of 30 mu m and 1 mm in diameter were employed to address questions in seed technology, phytopathology, plant physiology, and bioremediation. Different elements were analyzed in several situations of agronomic interest: (i) Examples of mu-XRF yielding quantitative maps that reveal the spatial distribution of zinc in common beans (Phaseolus vulgaris) primed seeds. (ii) Chemical images daily recorded at a soybean leaf (Glycine max) infected by anthracnose showed that phosphorus, sulfur, and calcium trended to concentrate in the disease spot. (iii) In vivo measurements at the stem of P vulgaris showed that under root exposure, manganese is absorbed and transported nearly 10-fold faster than iron. (iv) Quantitative maps showed that the lead distribution in a leaf of Eucalyptus hybrid was not homogenous, this element accumulated mainly in the leaf border and midrib, the lead hotspots reached up to 13,400 mg lead kg(-1) fresh tissue weight. These case studies highlight the ability of mu-XRF in performing qualitative and quantitative elemental analysis of fresh and living plant tissues. Thus, it can probe dynamic biological phenomena non-destructively and in real time. (AU) | |
| Processo FAPESP: | 17/16375-4 - Efeitos da aplicação foliar de La e Ce em plantas de soja |
| Beneficiário: | Eduardo Santos |
| Modalidade de apoio: | Bolsas no Brasil - Mestrado |