caa a22 4500 445321849 CHVBK 20180317142706.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10534-011-9457-y doi (NATIONALLICENCE)springer-10.1007/s10534-011-9457-y Zinc alleviates mercury-induced oxidative stress in Pfaffia glomerata (Spreng.) Pedersen [Elektronische Daten] [Nicéia Calgaroto, Denise Cargnelutti, Liana Rossato, Júlia Farias, Sibila Nunes, Luciane Tabaldi, Fabiane Antes, Erico Flores, Maria Schetinger, Fernando Nicoloso] The possible role of zinc (Zn) to reverse the oxidative stress caused by mercury (Hg) was investigated in Pfaffia glomerata plantlets. Thirty-day-old acclimatized plantlets of P. glomerata were exposed to four treatments: control, 50μM Zn, 50μM Hg and 50μM Zn+50μM Hg for 9days. In Zn+Hg treatment, shoot and root Hg concentrations were 59 and 24% smaller than that plants exposed to 50μM Hg added alone. An increase in the Zn concentration in the shoot of plants exposed to Zn+Hg occurred, although in the roots Zn concentration was not altered, when compared to the control. Fresh and dry weights, as well as the activity of δ-aminolevulinic acid dehydratase (δ-ALA-D) in Hg-treated plants were significantly reduced. Percentage survival, fresh and dry weights and δ-ALA-D activity of plants treated by 50μM Zn+50μM Hg were greater than of that treated by Hg alone. Moreover, Zn treatment reduced the lipid peroxidation caused by Hg, being this effect related to increased root superoxide dismutase activity, and shoot catalase and ascorbate peroxidase activities. In conclusion, the presence of Zn in the substrate caused a significant reduction in the oxidative stress induced by Hg. Springer Science+Business Media, LLC., 2011 Antioxidant system nationallicence Brazilian ginseng nationallicence Mercury nationallicence Oxidative stress nationallicence Pfaffia glomerata nationallicence Zinc nationallicence Calgaroto Nicéia Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Cargnelutti Denise Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Rossato Liana Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Farias Júlia Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Nunes Sibila Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Tabaldi Luciane Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Antes Fabiane Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Flores Erico Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Schetinger Maria Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut Nicoloso Fernando Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut BioMetals Springer Netherlands 24/5(2011-10-01), 959-971 0966-0844 24:5<959 2011 24 10534 https://doi.org/10.1007/s10534-011-9457-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10534-011-9457-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Calgaroto Nicéia Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Cargnelutti Denise Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Rossato Liana Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Farias Júlia Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Nunes Sibila Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Tabaldi Luciane Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Antes Fabiane Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Flores Erico Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Schetinger Maria Departamento de Química, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 700 1- Nicoloso Fernando Departamento de Biologia, Centro de Ciências Naturais e Exatas, Universidade Federal de Santa Maria, 97105-900, Santa Maria, RS, Brazil aut NATIONALLICENCE 773 0- BioMetals Springer Netherlands 24/5(2011-10-01), 959-971 0966-0844 24:5<959 2011 24 10534 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer