Arsenic toxicity in the freshwater microalga Euglena gracilis
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 agricul...
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2014
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paper:paper_97811380_v_n_p269_Nannavecchia2023-06-08T16:37:15Z Arsenic toxicity in the freshwater microalga Euglena gracilis Nannavecchia, Paula S. Conforti, Visitación Teresa Dora Juárez, Angela Beatriz Ríos de Molina, María del Carmen Algae Sodium Toxicity Water Anti-oxidant response Antioxidant defense Arsenic toxicity Contaminated environment Euglena gracilis Metals and metalloids Oxidative damage Reactive oxygen species Arsenic 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. Fil:Nannavecchia, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Conforti, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Juárez, Á. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Ríos De Molina, M.D.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p269_Nannavecchia http://hdl.handle.net/20.500.12110/paper_97811380_v_n_p269_Nannavecchia |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Algae Sodium Toxicity Water Anti-oxidant response Antioxidant defense Arsenic toxicity Contaminated environment Euglena gracilis Metals and metalloids Oxidative damage Reactive oxygen species Arsenic |
| spellingShingle |
Algae Sodium Toxicity Water Anti-oxidant response Antioxidant defense Arsenic toxicity Contaminated environment Euglena gracilis Metals and metalloids Oxidative damage Reactive oxygen species Arsenic Nannavecchia, Paula S. Conforti, Visitación Teresa Dora Juárez, Angela Beatriz Ríos de Molina, María del Carmen Arsenic toxicity in the freshwater microalga Euglena gracilis |
| topic_facet |
Algae Sodium Toxicity Water Anti-oxidant response Antioxidant defense Arsenic toxicity Contaminated environment Euglena gracilis Metals and metalloids Oxidative damage Reactive oxygen species Arsenic |
| description |
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. |
| author |
Nannavecchia, Paula S. Conforti, Visitación Teresa Dora Juárez, Angela Beatriz Ríos de Molina, María del Carmen |
| author_facet |
Nannavecchia, Paula S. Conforti, Visitación Teresa Dora Juárez, Angela Beatriz Ríos de Molina, María del Carmen |
| author_sort |
Nannavecchia, Paula S. |
| title |
Arsenic toxicity in the freshwater microalga Euglena gracilis |
| title_short |
Arsenic toxicity in the freshwater microalga Euglena gracilis |
| title_full |
Arsenic toxicity in the freshwater microalga Euglena gracilis |
| title_fullStr |
Arsenic toxicity in the freshwater microalga Euglena gracilis |
| title_full_unstemmed |
Arsenic toxicity in the freshwater microalga Euglena gracilis |
| title_sort |
arsenic toxicity in the freshwater microalga euglena gracilis |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_97811380_v_n_p269_Nannavecchia http://hdl.handle.net/20.500.12110/paper_97811380_v_n_p269_Nannavecchia |
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AT nannavecchiapaulas arsenictoxicityinthefreshwatermicroalgaeuglenagracilis AT confortivisitacionteresadora arsenictoxicityinthefreshwatermicroalgaeuglenagracilis AT juarezangelabeatriz arsenictoxicityinthefreshwatermicroalgaeuglenagracilis AT riosdemolinamariadelcarmen arsenictoxicityinthefreshwatermicroalgaeuglenagracilis |
| _version_ |
1768543300611997696 |