The dual effect of Selenium nanoparticles in rice seedlings: From increasing antioxidant activity to inducing oxidative stress
Selenium deficiency has been a worldwide concern because it can pose a risk to human health. Selenium nanoparticles (SeNPs) are in general less toxic and more bioavailable than ionic Se and, therefore, their use for biofortification of food crops has attracted attention. Rice is a staple food consum...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-03-01
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| Series: | Plant Stress |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2667064X24000265 |
| _version_ | 1797338208746340352 |
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| author | Bruna Moreira Freire Camila Neves Lange Yasmin Tavares Cavalcanti Lucilena Rebelo Monteiro Joana Claudio Pieretti Amedea Barozzi Seabra Bruno Lemos Batista |
| author_facet | Bruna Moreira Freire Camila Neves Lange Yasmin Tavares Cavalcanti Lucilena Rebelo Monteiro Joana Claudio Pieretti Amedea Barozzi Seabra Bruno Lemos Batista |
| author_sort | Bruna Moreira Freire |
| collection | DOAJ |
| description | Selenium deficiency has been a worldwide concern because it can pose a risk to human health. Selenium nanoparticles (SeNPs) are in general less toxic and more bioavailable than ionic Se and, therefore, their use for biofortification of food crops has attracted attention. Rice is a staple food consumed by half of the world's population. Indeed, studies on SeNPs' impacts on oxidative stress and antioxidant responses in rice seedlings are scarce. Herein, the effect of different concentrations of SeNPs on growth, antioxidant enzyme activity, reactive oxygen species, and nitric oxide metabolites in rice germinating seeds were investigated. Results revealed a dual effect of SeNPs on seedling growth. At low concentrations (0.5 mg L − 1), the nanoparticles did not affect seedling growth, while at higher concentrations root elongation was significantly decreased. Soaking rice seeds with SeNPs at 0.5 mg L − 1 effectively improved the activity of ascorbate peroxidase, catalase, and superoxide dismutase enzymes. However, a decrease in antioxidant enzyme activity was observed with increasing SeNPs concentrations. All treatments decreased S-nitrosothiols and nitrite concentrations compared to the control. Hydrogen peroxide concentrations also decreased for concentrations higher than 5 mg L − 1, compared to the control. Our results suggest a beneficial effect of SeNPs at the optimal concentration of 0.5 mg L − 1 on stimulating antioxidant metabolism and mitigating reactive oxygen species in plant tissues without affecting the physiological parameters. |
| first_indexed | 2024-03-08T09:27:39Z |
| format | Article |
| id | doaj.art-39e4d26dc2414707ab993c333e37b336 |
| institution | Directory Open Access Journal |
| issn | 2667-064X |
| language | English |
| last_indexed | 2024-03-08T09:27:39Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Plant Stress |
| spelling | doaj.art-39e4d26dc2414707ab993c333e37b3362024-01-31T05:45:48ZengElsevierPlant Stress2667-064X2024-03-0111100372The dual effect of Selenium nanoparticles in rice seedlings: From increasing antioxidant activity to inducing oxidative stressBruna Moreira Freire0Camila Neves Lange1Yasmin Tavares Cavalcanti2Lucilena Rebelo Monteiro3Joana Claudio Pieretti4Amedea Barozzi Seabra5Bruno Lemos Batista6Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André, SP, BrazilCenter for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André, SP, BrazilCenter for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André, SP, BrazilIpen/CNEN-SP – Institute of Energy and Nuclear Research/National Nuclear Energy Commission, São Paulo, SP, BrazilCenter for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André, SP, BrazilCenter for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André, SP, Brazil; Corresponding authors: Amedea Barozzi Seabra Center for Natural and Human Sciences (CCNH), Federal University of ABC, Avenida dos Estados 5001, Bangú, Santo Andre, SP, Brazil.Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André, SP, Brazil; Corresponding authors: Amedea Barozzi Seabra Center for Natural and Human Sciences (CCNH), Federal University of ABC, Avenida dos Estados 5001, Bangú, Santo Andre, SP, Brazil.Selenium deficiency has been a worldwide concern because it can pose a risk to human health. Selenium nanoparticles (SeNPs) are in general less toxic and more bioavailable than ionic Se and, therefore, their use for biofortification of food crops has attracted attention. Rice is a staple food consumed by half of the world's population. Indeed, studies on SeNPs' impacts on oxidative stress and antioxidant responses in rice seedlings are scarce. Herein, the effect of different concentrations of SeNPs on growth, antioxidant enzyme activity, reactive oxygen species, and nitric oxide metabolites in rice germinating seeds were investigated. Results revealed a dual effect of SeNPs on seedling growth. At low concentrations (0.5 mg L − 1), the nanoparticles did not affect seedling growth, while at higher concentrations root elongation was significantly decreased. Soaking rice seeds with SeNPs at 0.5 mg L − 1 effectively improved the activity of ascorbate peroxidase, catalase, and superoxide dismutase enzymes. However, a decrease in antioxidant enzyme activity was observed with increasing SeNPs concentrations. All treatments decreased S-nitrosothiols and nitrite concentrations compared to the control. Hydrogen peroxide concentrations also decreased for concentrations higher than 5 mg L − 1, compared to the control. Our results suggest a beneficial effect of SeNPs at the optimal concentration of 0.5 mg L − 1 on stimulating antioxidant metabolism and mitigating reactive oxygen species in plant tissues without affecting the physiological parameters.http://www.sciencedirect.com/science/article/pii/S2667064X24000265Nano-selenium, Oryza sativa L.Antioxidant metabolismReactive oxygen speciesNO metabolites |
| spellingShingle | Bruna Moreira Freire Camila Neves Lange Yasmin Tavares Cavalcanti Lucilena Rebelo Monteiro Joana Claudio Pieretti Amedea Barozzi Seabra Bruno Lemos Batista The dual effect of Selenium nanoparticles in rice seedlings: From increasing antioxidant activity to inducing oxidative stress Plant Stress Nano-selenium, Oryza sativa L. Antioxidant metabolism Reactive oxygen species NO metabolites |
| title | The dual effect of Selenium nanoparticles in rice seedlings: From increasing antioxidant activity to inducing oxidative stress |
| title_full | The dual effect of Selenium nanoparticles in rice seedlings: From increasing antioxidant activity to inducing oxidative stress |
| title_fullStr | The dual effect of Selenium nanoparticles in rice seedlings: From increasing antioxidant activity to inducing oxidative stress |
| title_full_unstemmed | The dual effect of Selenium nanoparticles in rice seedlings: From increasing antioxidant activity to inducing oxidative stress |
| title_short | The dual effect of Selenium nanoparticles in rice seedlings: From increasing antioxidant activity to inducing oxidative stress |
| title_sort | dual effect of selenium nanoparticles in rice seedlings from increasing antioxidant activity to inducing oxidative stress |
| topic | Nano-selenium, Oryza sativa L. Antioxidant metabolism Reactive oxygen species NO metabolites |
| url | http://www.sciencedirect.com/science/article/pii/S2667064X24000265 |
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