Abstract:
Metals and metalloids may be toxic to algae and can generate reactive oxygen species, leading to oxidative stress, which impairs antioxidant defenses and produces oxidation of essential molecules. As a consequence of the development of water-dependent activities such as mining, industry, and agriculture, arsenic levels in aquatic ecosystems have been increasing. The microalga Euglena gracilis is one of the few planktonic microorganisms that grow in highly contaminated environments with arsenic, such as in mining tailings. The toxicity of sodium arsenite in two strains of the freshwater microalga E. gracilis was studied by comparing culture growth and by measuring some indicators of the antioxidant response and oxidative damage. We show evidence for the two E. gracilis strains that the toxicity response to sodium arsenite involves oxidative stress processes. © 2014 Taylor & Francis Group.
Registro:
| Documento: |
Conferencia
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| Título: | Arsenic toxicity in the freshwater microalga Euglena gracilis |
| Autor: | Nannavecchia, P.; Conforti, V.; Juárez, Á.; Ríos De Molina, M.D.C.; et al.; National Atomic Energy Commission (CNEA); National Research and Technology Council (CONICET); The Argentine Foundation of Nanotechnology; The National University of Buenos Aires (UBA); The National University of San Martin (UNSAM) |
| Ciudad: | Buenos Aires |
| Filiación: | Facultad de Ciencias Exactas Y Naturales, Universidad de Buenos Aires, Argentina
IBBEA-CONICET, Buenos Aires, Argentina
IQUIBICEN-CONICET, Buenos Aires, Argentina
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| Palabras clave: | Algae; Sodium; Toxicity; Water; Anti-oxidant response; Antioxidant defense; Arsenic toxicity; Contaminated environment; Euglena gracilis; Metals and metalloids; Oxidative damage; Reactive oxygen species; Arsenic |
| Año: | 2014
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| Página de inicio: | 269
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| Página de fin: | 271
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| Título revista: | 5th International Congress on Arsenic in the Environment, As 2014
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| Título revista abreviado: | One Century Discov. Arsenicosis Latin America: As - Proc. Int. Congr. Arsenic Environ.
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| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p269_Nannavecchia |
Referencias:
- Morin, G., Calas, G., Arsenic in soils, mines tailings and former industrial sites (2006) Elements, 2, pp. 97-101
- Miot, J., Morin, G., Skouri-Panet, F., Férard, C., Aubry, E., Briand, J., Wang, Y., Brown, G., XAS Study of arsenic coordination in Euglena gracilis exposed to arsenite (2008) Environ. Sci. Technol., 42, pp. 5342-5347
- Miot, J., Morin, G., Skouri-Panet, F., Férard, C., Poitevin, A., Aubry, E., Ona-Nguema, G., Brown Jr., G., Speciation of Arsenic in Euglena gracilis Cells Exposed to As(V) (2009) Environ. Sci. Technol., 43, pp. 3315-3321
- Zettler, L.A., Gómez, F., Zettler, E., Keenan, B.G., Amils, R., Sogin, M.L., Eukaryotic diversity in Spain's River of Fire (2002) Nat-Lond., 417 (6885), p. 137A4 - et al.; National Atomic Energy Commission (CNEA); National Research and Technology Council (CONICET); The Argentine Foundation of Nanotechnology; The National University of Buenos Aires (UBA); The National University of San Martin (UNSAM)
Citas:
---------- APA ----------
Nannavecchia, P., Conforti, V., Juárez, Á., Ríos De Molina, M.D.C. & et al.; National Atomic Energy Commission (CNEA); National Research and Technology Council (CONICET); The Argentine Foundation of Nanotechnology; The National University of Buenos Aires (UBA); The National University of San Martin (UNSAM)
(2014)
. Arsenic toxicity in the freshwater microalga Euglena gracilis. 5th International Congress on Arsenic in the Environment, As 2014, 269-271.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p269_Nannavecchia [ ]
---------- CHICAGO ----------
Nannavecchia, P., Conforti, V., Juárez, Á., Ríos De Molina, M.D.C., et al.; National Atomic Energy Commission (CNEA); National Research and Technology Council (CONICET); The Argentine Foundation of Nanotechnology; The National University of Buenos Aires (UBA); The National University of San Martin (UNSAM)
"Arsenic toxicity in the freshwater microalga Euglena gracilis"
. 5th International Congress on Arsenic in the Environment, As 2014
(2014) : 269-271.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p269_Nannavecchia [ ]
---------- MLA ----------
Nannavecchia, P., Conforti, V., Juárez, Á., Ríos De Molina, M.D.C., et al.; National Atomic Energy Commission (CNEA); National Research and Technology Council (CONICET); The Argentine Foundation of Nanotechnology; The National University of Buenos Aires (UBA); The National University of San Martin (UNSAM)
"Arsenic toxicity in the freshwater microalga Euglena gracilis"
. 5th International Congress on Arsenic in the Environment, As 2014, 2014, pp. 269-271.
Recuperado de https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p269_Nannavecchia [ ]
---------- VANCOUVER ----------
Nannavecchia, P., Conforti, V., Juárez, Á., Ríos De Molina, M.D.C., et al.; National Atomic Energy Commission (CNEA); National Research and Technology Council (CONICET); The Argentine Foundation of Nanotechnology; The National University of Buenos Aires (UBA); The National University of San Martin (UNSAM) Arsenic toxicity in the freshwater microalga Euglena gracilis. One Century Discov. Arsenicosis Latin America: As - Proc. Int. Congr. Arsenic Environ. 2014:269-271.
Available from: https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p269_Nannavecchia [ ]
