Mitigation of arsenic accumulation in rice (Oryza sativa L.) seedlings by oxygen nanobubbles in hydroponic cultures
Arsenic (As) is a toxic non-essential metal. Its accumulation in rice has not only seriously affected the growth of rice, but also poses a significant threat to human health. Many reports have been published to decrease the arsenic accumulation in the rice plant by various additives such as chemical...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323012046 |
| _version_ | 1797435788268404736 |
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| author | Minyi Huang Nguyen Thi Hong Nhung Gjergj Dodbiba Toyohisa Fujita |
| author_facet | Minyi Huang Nguyen Thi Hong Nhung Gjergj Dodbiba Toyohisa Fujita |
| author_sort | Minyi Huang |
| collection | DOAJ |
| description | Arsenic (As) is a toxic non-essential metal. Its accumulation in rice has not only seriously affected the growth of rice, but also poses a significant threat to human health. Many reports have been published to decrease the arsenic accumulation in the rice plant by various additives such as chemicals, fertilizers, adsorbents, microorganisms and analyzing the mechanism. Nanobubble is a new technology widely used in agriculture because of its long existence time and high mass transfer efficiency. However, a few studies have investigated the effect of nanobubbles on arsenic uptake in rice. This study investigated the effect of oxygen nanobubbles on the growth and uptake of As in rice. The oxygen nanobubbles could rupture the salinity of nutrients and produce the hydroxyl radical. The hydroxyl radical caused the oxidation of arsenic As(III) to As (V) and the oxidation of ferrous ions. At the same time, the oxidized iron adsorbing As (V) created the iron plaque on the rice roots to stop arsenic introduction into the rice plant. The results indicated that the treatment of oxygen nanobubbles increased rice biomass under As stress, while they increased the chlorophyll content and promoted plant photosynthesis. Oxygen nanobubbles reduced the As content in rice roots to 12.5% and shoots to 46.4%. In other words, it significantly decreased As accumulation in rice. Overall, oxygen nanobubbles mitigated the toxic effects of arsenic on rice and had the potential to reduce the accumulation of arsenic in rice. |
| first_indexed | 2024-03-09T10:53:05Z |
| format | Article |
| id | doaj.art-1ae4f9424e8c4c23b0edff721443f931 |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-09T10:53:05Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-1ae4f9424e8c4c23b0edff721443f9312023-12-01T05:00:29ZengElsevierEcotoxicology and Environmental Safety0147-65132023-12-01268115700Mitigation of arsenic accumulation in rice (Oryza sativa L.) seedlings by oxygen nanobubbles in hydroponic culturesMinyi Huang0Nguyen Thi Hong Nhung1Gjergj Dodbiba2Toyohisa Fujita3College of Resources, Environment and Materials, Guangxi University, Nanning 530004, ChinaFaculty of Environmental and Food Engineering, Nguyen Tat Thanh University, Ho Chi Minh City 755414, Viet NamGraduate School of Engineering, The University of Tokyo, Bunkyo 113-8656, JapanCollege of Resources, Environment and Materials, Guangxi University, Nanning 530004, China; Corresponding author.Arsenic (As) is a toxic non-essential metal. Its accumulation in rice has not only seriously affected the growth of rice, but also poses a significant threat to human health. Many reports have been published to decrease the arsenic accumulation in the rice plant by various additives such as chemicals, fertilizers, adsorbents, microorganisms and analyzing the mechanism. Nanobubble is a new technology widely used in agriculture because of its long existence time and high mass transfer efficiency. However, a few studies have investigated the effect of nanobubbles on arsenic uptake in rice. This study investigated the effect of oxygen nanobubbles on the growth and uptake of As in rice. The oxygen nanobubbles could rupture the salinity of nutrients and produce the hydroxyl radical. The hydroxyl radical caused the oxidation of arsenic As(III) to As (V) and the oxidation of ferrous ions. At the same time, the oxidized iron adsorbing As (V) created the iron plaque on the rice roots to stop arsenic introduction into the rice plant. The results indicated that the treatment of oxygen nanobubbles increased rice biomass under As stress, while they increased the chlorophyll content and promoted plant photosynthesis. Oxygen nanobubbles reduced the As content in rice roots to 12.5% and shoots to 46.4%. In other words, it significantly decreased As accumulation in rice. Overall, oxygen nanobubbles mitigated the toxic effects of arsenic on rice and had the potential to reduce the accumulation of arsenic in rice.http://www.sciencedirect.com/science/article/pii/S0147651323012046AsHydroxyl radicalsIron plaqueO2 nanobubbles |
| spellingShingle | Minyi Huang Nguyen Thi Hong Nhung Gjergj Dodbiba Toyohisa Fujita Mitigation of arsenic accumulation in rice (Oryza sativa L.) seedlings by oxygen nanobubbles in hydroponic cultures Ecotoxicology and Environmental Safety As Hydroxyl radicals Iron plaque O2 nanobubbles |
| title | Mitigation of arsenic accumulation in rice (Oryza sativa L.) seedlings by oxygen nanobubbles in hydroponic cultures |
| title_full | Mitigation of arsenic accumulation in rice (Oryza sativa L.) seedlings by oxygen nanobubbles in hydroponic cultures |
| title_fullStr | Mitigation of arsenic accumulation in rice (Oryza sativa L.) seedlings by oxygen nanobubbles in hydroponic cultures |
| title_full_unstemmed | Mitigation of arsenic accumulation in rice (Oryza sativa L.) seedlings by oxygen nanobubbles in hydroponic cultures |
| title_short | Mitigation of arsenic accumulation in rice (Oryza sativa L.) seedlings by oxygen nanobubbles in hydroponic cultures |
| title_sort | mitigation of arsenic accumulation in rice oryza sativa l seedlings by oxygen nanobubbles in hydroponic cultures |
| topic | As Hydroxyl radicals Iron plaque O2 nanobubbles |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323012046 |
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