Hudson Wallace Pereira de Carvalho in research grants and scholarships supported by FAPESP.
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Several studies demonstrate that calcium (Ca) presents low mobility in the phloem, hence it is supplied to plant tissues mainly by the xylem. Since transpiration is the driving force of the xylem flow, Ca supply can be compromised in organs, such as fruits, which have low transpiration rate. Low productivity as well as disorders in fruits, such as apical rot, bitter pit, wilt and reduced …
Nanomaterials present great potential to be employed in agriculture. Due to features such as solubity and transport they may be used for the mineral nutrition. The present proposal has two main goals: firstly we aim at investigating the mechanisms of uptake of nutrients supplyed by nanoparticles. The second one covers tunning of particle properties that result in maximum absorption. Thus …
As previously discussed in the granted proposal the micro-XRF facility will be used to map the roots, steam, leaves and seeds exposed to nanomaterials. Due to space resolution offered by the micro-XRF it will be possible to trace the specialized tissues where the nanomaterials are accumulated. Besides finding out the storage hotspots, it will be possible to estimate the concentration of n…
(Only some records are available in English at this moment)
Soybean represents 9% of the whole agricultural area worldwide, being Brazil, United States of America and Argentina responsible for more than 65% of its production. Many technologies worked together to made its expansion possible to the tropics, highlighting breeding programs and nutritional developments. It is thanks to it that soybean area and yield increased intensively over the last …
Qualitative and quantitative elemental evaluation of samples is of great importance for agricultural and environmental sciences. These analyzes can be performed by several methods and equipment. In this context, total reflection X-ray fluorescence (TXRF) technique is under consolidation since it presents limits of detection in the order of ¼g L-1 or ¼g kg-1, wide range of linear calibr…
Although not essential for plants the lanthanum and cerium elements, both rare earth element (REE), are used as fertilizers in different crops, manly in China. Studies about this application have demonstrated greater yield in seeds germination, productivity, greater resistance to pathogens and increase in chlorophyll content. According to the consulted literature, the benefic effects prom…
(Only some records are available in English at this moment)
Cerium is the main rare earth element (REE) used in agricultural context. It has been reported to promote photosynthesis and enhance carboxylation efficiency for soybean seedling after Ce spraying, and additionally controlling some features of its photosynthesis under UV-B stress. In addition to soluble forms, there is an increasing interest on REE nanoparticles. Some indicate benefic res…
| 4 / 4 | Completed research grants |
| 6 / 6 | Completed scholarships in Brazil |
| 1 / 1 | Completed scholarships abroad |
| 11 / 11 | All research grants and scholarships |
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