Effects of copper oxide nanoparticles on germination of Sesbania virgata (FABACEAE) plants

Effects of copper oxide nanoparticles on germination of Sesbania virgata (FABACEAE) plants

Nanotechnology is a field that, over the years, has been growing in several research areas, such as medicine, agriculture and cosmetics, among others. As a result, there is a continuous increase in the production, use and disposal of these materials in the environment. The behaviour and (bio) activi...

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Bibliographic Details
Published in:Anais da Academia Brasileira de Ciências Vol. 93; no. 3; p. e20190739
Main Authors: Santos, Eliene S Dos, Graciano, Daniela E, Falco, William F, Caires, Anderson R Lima, Arruda, Eduardo J DE
Format: Journal Article
Language:English
Published: Brazil Academia Brasileira de Ciências 01-01-2021
Subjects:
Chlorophyll A
chlorophyll fluorescence
Copper - pharmacology
Ecosystem
Fabaceae
Germination
metals
MULTIDISCIPLINARY SCIENCES
nanomaterials
Nanoparticles
oxidative stress
Oxides
root growth
Sesbania
metals
nanomaterials
root growth
chlorophyll fluorescence
oxidative stress
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Summary:Nanotechnology is a field that, over the years, has been growing in several research areas, such as medicine, agriculture and cosmetics, among others. As a result, there is a continuous increase in the production, use and disposal of these materials in the environment. The behaviour and (bio) activity of these materials in the atmosphere, water and soil are not fully studied. Therefore, it is necessary to carry out an analysis of the risks of contamination, as well as the possible effects and impacts of nanoparticles (NPs) on the ecosystem. In an attempt to investigate these effects on plants, the present study aimed to investigate the impact of copper oxide nanoparticles (CuO NPs) on the seed germination process of Sesbania virgata. For this, the Sesbania virgata seeds were subjected to different concentration of CuO NPs (0, 100, 200, 300 and 400 mgL-1) and their germination and development were monitored by optical analysis (thermography and chlorophyll a fluorescence). The results show that the CuO NPs induced a reduction on the maximum emission of chlorophyll a, which was concentration-dependent. The data also showed that CuO NPs promoted an increase in the energy dissipated by non-photochemical pathways and the surface temperature of the seeds. Additionally, our findings revealed that CuO NPs caused a root growth inhibition. In summary, the present study demonstrates, for the first time, that CuO NPs can negatively affect the physiological status and development of the S. virgata plant, by altering the efficiency of the functioning of photosystem II in its initial developmental stage, depending on the concentration of CuO NPs.
ISSN:0001-3765
1678-2690
1678-2690
DOI:10.1590/0001-3765202120190739