| Full text | |
| Author(s): |
Barreto, Matheus Sampaio Carneiro
[1, 2]
;
dos Reis, Josimar Viera
[1]
;
Muraoka, Takashi
[3]
;
Jemo, Martin
[1]
;
Vergutz, Leonardus
[1]
;
Alleoni, Luis Reynaldo F.
[2]
Total Authors: 6
|
| Affiliation: | [1] Mohammed VI Polytech Univ UM6P, AgroBiosci Program, Ben Guerir - Morocco
[2] Univ Sao Paulo, Luiz Queiroz Coll Agr ESALQ, Sao Paulo - Brazil
[3] Univ Sao Paulo, Ctr Nucl Energy Agr CENA, Piracicaba, SP - Brazil
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | ANALYST; v. 146, n. 11, p. 3440-3448, JUN 7 2021. |
| Web of Science Citations: | 0 |
| Abstract | |
The extraction and quantification of leaf pigments are easy, fast, and cheap procedures; on the other hand, diffuse reflectance infrared Fourier transform (DRIFT) spectroscopy associated with chemometrics tools could offer new insights into leaf biochemical composition. We aimed to boost the classic leaf pigment quantification, adding leaf biochemical information derived from DRIFT spectroscopy + principal component analysis, using the same leaf pigment extract produced by the classical quantification method. We performed a dose-response experiment using P as the limiting nutrient, and maize (Zea mays L.) as a plant-test. After 45 d of growth, we evaluated the effects of P fertilization in total maize shoot biomass, P shoot accumulation, leaf pigment quantification by UV-Vis, and the evaluation of biochemical variations by DRIFT spectroscopy analysis associated with a chemometric approach in the same leaf extract used for pigment quantification. P fertilization raised biomass accumulation (similar to 7.4x), P uptake (similar to 2.3x), and total chlorophyll a and b contents (similar to 2.1x). DRIFT spectroscopy analysis of extracted pigments revealed an elevated content of proteins and polysaccharides at high P availability. At low P availability, we found a low efficiency of N metabolism suggested by the accumulation of inorganic N forms. DRIFT spectroscopy applied together with the classic leaf pigment extraction and quantification method is a novel and promising tool for plant nutrition studies as a DRIFT spectroscopy metabolic profile protocol. (AU) | |
| FAPESP's process: | 14/22262-0 - Geotechnologies on a detailed digital soil mapping and the Brazilian soil spectral library: development and applications |
| Grantee: | José Alexandre Melo Demattê |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 16/22058-9 - Adsorption and desorption of Cd and Zn in highly fertilized tropical soils |
| Grantee: | Matheus Sampaio Carneiro Barreto |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 16/05870-1 - SPCIATION AND KINETIC ADSORPTION AND DESORPTION OF Cd AND Zn IN SOILS OF OLERACEUS CROPS HIGHLY FERTILIZER |
| Grantee: | Matheus Sampaio Carneiro Barreto |
| Support Opportunities: | Scholarships in Brazil - Doctorate |