Reduction of arsenic toxicity in two rice cultivar seedlings by different nanoparticles
| Autor: | Lina Lin, Yifan Han, Qing Huang, Fang-Jun Li, Qing Liu, Zhengguo Song |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Health
Toxicology and Mutagenesis 0211 other engineering and technologies Oxide Biomass chemistry.chemical_element 02 engineering and technology 010501 environmental sciences 01 natural sciences Antioxidants Nanomaterials Arsenic chemistry.chemical_compound Hydroponics Soil Pollutants Cultivar 0105 earth and related environmental sciences 021110 strategic defence & security studies biology Arsenic toxicity Chemistry Public Health Environmental and Occupational Health food and beverages Oryza General Medicine biology.organism_classification Pollution Enzyme assay Horticulture Seedling Seedlings biology.protein Nanoparticles |
| Zdroj: | Ecotoxicology and environmental safety. 159 |
| ISSN: | 1090-2414 |
| Popis: | In this study, we investigated arsenic uptake and enzymatic activities in rice seedlings after the addition of nanoparticles. Hydroponic experiments were conducted to investigate the effects of different nanomaterials (high-quality graphene oxide, multilayer graphene oxide, 20 nm hydroxyapatite (HA20), 40 nm hydroxyapatite (HA40), nano-Fe3O4 (nFe3O4) and nano-zerovalent iron [nFe]) on the biomass, arsenic uptake, and enzyme activities in seedlings of the rice cultivars T705 and X24. Compared with the control, the addition of different nanomaterials increased seedling growth, with X24 rice growing better than T705 rice. Nanomaterials effectively reduced arsenic uptake in T705 rice seedlings under low and high arsenic concentrations; however, they were only effective at lower arsenic concentrations in X24 seedlings. nFe3O4 and nFe performed better than other nanomaterials in preventing arsenic from being transported to the aboveground parts of the rice seedlings. Different nanomaterials obviously influenced enzyme activities in the T705 seedlings at low arsenic concentrations (≤ 0.8 mg L−1). High-quality and multilayer graphene oxide decreased enzyme activities in the aboveground parts of the T705 seedlings, whereas, HA20 and HA40 increased the enzyme activities. nFe3O4 and nFe also reduced the effect of antioxidants in the aboveground parts of the T705 seedlings. Nanomaterials effectively reduced the arsenic uptake of T705 and X24 rice seedlings at low arsenic concentrations. |
| Databáze: | OpenAIRE |
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