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2.
Microsc Microanal ; 29(Suppl 1): 39-41, 2023 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-37613051

RESUMO

In pioneering research, it has been documented that the CNT influences the development of plants through the balance of phytoregulators. Therefore, in this work the objective is to evaluate the effects of CNT functionalized by non-covalent method with indole-3-butyric acid that they have on Avena sativa. The CNT was characterized by FTIR and Raman to confirm functionalization. It was observed that in the germination stage the seeds treated with IBA inhibited germination, however, when functionalizing the CNT with IBA it was observed that the CNT is contributing to counteract this inhibition.


Assuntos
Nanotubos de Carbono , Ácido Butírico , Avena
3.
Microsc Microanal ; 29(Suppl 1): 33-35, 2023 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-37613105

RESUMO

The nanotechnology applications in agricultural systems are multiple since they offer the potential to significantly improve plant development as well as reduce economic and environmental costs. Zinc oxide nanoparticles (NpsZnO) and other metals have been shown to have positive effects in this field. In this work, NpsZnO were synthesized and their impact on the Avena sativa plant was evaluated. The synthesis of nanoparticles (NPs) was carried out using the sol-gel method and the application of these was carried out in the seeds prior to their sowing. The results indicate that mesoporous NPs were obtained. The results indicated that the plants exposed to the application of NpsZnO had a significantly higher biomass production compared to the control treatment plants, showing values ​​of up to 0.45 (g) compared to the control that contained an average of 0.2 g an increase in the chlorophyll index was observed, obtaining concentrations up to 4 times the control. The growth-promoting effect of the applied NPs could be due to the activity of zinc as a precursor in the synthesis of auxins that promote cell division and elongation.


Assuntos
Nanopartículas , Óxido de Zinco , Avena , Biomassa , Zinco
4.
Microsc Microanal ; 29(Suppl 1): 74-76, 2023 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-37613110

RESUMO

The application of nanoparticles (NPs) in the field of agriculture represents a novel, efficient and low-cost alternative to replace supplies of conventional agriculture. Zinc oxide nanoparticles (NpsZnO) have been shown to have a positive effect on the development of various vegetable species. For this study, NpsZnO were synthesized by the sol-gel method, and subsequently, its absorption in Zea mays seeds and its effect on germination were evaluated. The results showed mesoporous nanoparticles were obtained. In addition, the seeds exposed to the nanoparticles showed a significantly higher concentration of zinc compared to the seeds control, showing values of up to 275 ppm compared to the control which contained an average of 75 ppm. An increase in germination was also observed, obtaining the best effect in the concentration of 16 µg/mL. The growth-promoting effect of the applied NPs on seed germination could be due to the activity of zinc as a precursor in the synthesis of phytoregulators. However, there is a lack of studies in research such as this one to confirm this inference.


Assuntos
Nanopartículas , Óxido de Zinco , Óxido de Zinco/farmacologia , Zea mays , Germinação , Zinco/farmacologia
5.
Microsc Microanal ; 29(Suppl 1): 36-38, 2023 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-37613114

RESUMO

The use of synthetic carbon nanotubes has been widely studied in plant crops, however, knowledge about carbon nanotubes of natural origin is limited, therefore, in this work the effect of MWCNT obtained in samples after treatment was evaluated. a forest fire on the biomass and germination of Avena sativa, as well as the behavior of these MWCNT when subjected to chemical oxidation and subsequent functionalization, where positive effects were observed both in the germination speed as well as in the percentage, on the other hand there was a significant increase in fresh and dry weight, these results give help us an information for understood better the way the MWCNT improve plant development.


Assuntos
Nanotubos de Carbono , Incêndios Florestais , Avena , Isotiocianatos , Fluoresceína
6.
Microsc Microanal ; 29(Suppl 1): 42-43, 2023 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-37613127

RESUMO

In pioneering research, it has been documented that the CNT influences the development of plants through the balance of phytoregulators. Therefore, in this work the objective is to evaluate the effects of the CNT functionalized by non-covalent method with kinetin that have in Avena sativa. CNT was characterized by FTIR and Raman to confirm functionality. The results showed that the application of CNT with phytoregulators modified plant development.


Assuntos
Avena , Nanotubos de Carbono , Cinetina/farmacologia
7.
Microsc Microanal ; 29(Suppl 1): 69-71, 2023 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-37613168

RESUMO

The use of multiwalled carbon nanotubes (MWCNTs) in plant systems has been extensively studied in the last decade, however, the structural modification of these nanoparticles changes the effects when interacting with biological systems, so this work gives us more information on the effects of the oxidation and functionalization of the MWCNTs, where these nanoparticles increased the speed of germination as well as the total germination and in the same way improved the biomass of the plant.


Assuntos
Avena , Nanotubos de Carbono , Isotiocianatos , Fluoresceína
9.
Microsc Microanal ; 29(Suppl 1): 24-27, 2023 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-37613177

RESUMO

Nanotechnology applied to agriculture (nanoagriculture) represents a watershed in the study and development of novel alternatives that could strongly influence agricultural practices. In this research, we documented the comparative study with multi-walled carbon nanotube (MWCNT) and ferrites doped with zinc-manganese in C. annuum development, due to the nanoparticles study in plant crops has been showing beneficial effects.


Assuntos
Capsicum , Nanotubos de Carbono , Manganês , Zinco
10.
Microsc Microanal ; 29(Suppl 1): 15-18, 2023 07 22.
Artigo em Inglês | MEDLINE | ID: mdl-37613454

RESUMO

The phytotoxicity of synthetic multi-walled carbon nanotubes (MWCNTs) on plant growth has been documented. However, the physiological mechanisms associated with it are not clear. The activity of TOR signaling pathway and phytoregulators balance play key roles in plant growth regulation and their stress response.


Assuntos
Proteínas de Arabidopsis , Arabidopsis , Nanotubos de Carbono , Nanotubos de Carbono/toxicidade , Transdução de Sinais , Fosfatidilinositol 3-Quinases
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