caa a22 4500 445321148 CHVBK 20180317142704.0 cr unu---uuuuu 170323e20110201xx s 000 0 eng 10.1007/s10534-010-9375-4 doi (NATIONALLICENCE)springer-10.1007/s10534-010-9375-4 Differential responses of oat genotypes: oxidative stress provoked by aluminum [Elektronische Daten] [Luciane Pereira, Cinthia de A. Mazzanti, Denise Cargnelutti, Liana Rossato, Jamile Gonçalves, Nicéia Calgaroto, Valderi Dressler, Fernando Nicoloso, Luiz Federizzi, Vera Morsch, Maria Schetinger] The phytotoxic effects of aluminum and the mechanisms of genetically-based Al tolerance have been widely investigated, as reported in many papers and reviews. However, investigations on many Al-sensitive and Al-resistant species demonstrate that Al phytotoxicity and Al-resistance mechanisms are extremely complex phenomena. The objective of the present study was to analyze the effects of aluminum on the activity of antioxidant enzymes such as catalase (CAT), superoxide dismutase (SOD), and ascorbate peroxidase (APX). Also was evaluated the lipid peroxidation, H2O2 content, levels of ascorbic acid (ASA), non-protein thiols (NPSH) and Al content in three genotypes of oat, Avena sativa L. (UFRGS 930598, UFRGS 17, and UFRGS 280). The genotypes were grown in different concentrations of Al ranging from 90 to 555μM for 5days. The antioxidant system was unable to overcome toxicity resulting in negative effects such as lipid peroxidation and H2O2 content in UFRGS 930598. The results showed that UFRGS 930598 was the most sensitive genotype. UFRGS 17 and UFRGS 280 were more resistant to Al toxicity. These results suggest that UFRGS 17 has mechanisms of external detoxification and UFRGS 280 has mechanisms of internal detoxification. The different behavior of enzymatic and non-enzymatic antioxidants of the genotypes showed that aluminum resistance in UFGRS 17 and UFRGS 280 may be related to oxidative stress. Springer Science+Business Media, LLC., 2010 Avena sativa nationallicence Superoxide dismutase nationallicence Hydrogen peroxide nationallicence Ascorbate peroxidase nationallicence Catalase nationallicence Aluminum content nationallicence Oxidative stress nationallicence Pereira Luciane Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut de A. Mazzanti Cinthia Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Cargnelutti Denise Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Rossato Liana Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Gonçalves Jamile Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Calgaroto Nicéia Biologia, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Dressler Valderi Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Nicoloso Fernando Biologia, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Federizzi Luiz Departamento de Plantas de Lavoura, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 7712, Porto Alegre, RS, Brazil aut Morsch Vera Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Schetinger Maria Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut BioMetals Springer Netherlands 24/1(2011-02-01), 73-83 0966-0844 24:1<73 2011 24 10534 https://doi.org/10.1007/s10534-010-9375-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10534-010-9375-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Pereira Luciane Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- de A. Mazzanti Cinthia Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Cargnelutti Denise Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Rossato Liana Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Gonçalves Jamile Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Calgaroto Nicéia Biologia, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Dressler Valderi Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Nicoloso Fernando Biologia, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Federizzi Luiz Departamento de Plantas de Lavoura, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 7712, Porto Alegre, RS, Brazil aut NATIONALLICENCE 700 1- Morsch Vera Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Schetinger Maria Departamento de Química e, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 773 0- BioMetals Springer Netherlands 24/1(2011-02-01), 73-83 0966-0844 24:1<73 2011 24 10534 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer