Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’

Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’

Salinity is an important problem to crop production; affecting photosynthesis process which favors the production of reactive oxygen species. Plants have generated adaptation strategies to prevent oxidative damage caused by salinity. In this study we evaluated the effect of salinity on lipid peroxid...

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Autores principales: Carrasco-Ríos,Libertad, Pinto,Manuel
Lenguaje:English
Publicado: Instituto de Investigaciones Agropecuarias, INIA 2014
Materias:
Antioxidant enzymes
lipid peroxidation
salt stress
Zea mays
Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000100014
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spelling oai:scielo:S0718-583920140001000142018-10-01Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’Carrasco-Ríos,LibertadPinto,Manuel Antioxidant enzymes lipid peroxidation salt stress Zea mays Salinity is an important problem to crop production; affecting photosynthesis process which favors the production of reactive oxygen species. Plants have generated adaptation strategies to prevent oxidative damage caused by salinity. In this study we evaluated the effect of salinity on lipid peroxidation and antioxidant enzymes in leaves of corn (Zea mays L.) plants ’Lluteno’ (adapted to salinity) and ’Jubilee’ (improved variety). ’Lluteno’ is the only one corn capable to prosper in the Valley of Lluta under saline conditions (EC = 9.1 dS m-1) and the most widely cultivated crop in terms of area in the desert of northern Chile. Plants of 21 d old were subjected for 15 d to two saline treatments: 50 and 100 mM NaCl. Salinity caused a significant reduction in plant biomass, ca. 65% in ’Jubilee’ and 20% in ’Lluteno’ (P ≤ 0.05). The biomass reduction and oxidative damage to cell membranes caused by the generation of peroxides was significantly less in ’Lluteno’. The activity of superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (GPX), and ascorbate peroxidase (APX) in ’Lluteno’ was significantly greater than in ’Jubilee’ in all treatments, while glutathione reductase (GR) had greater activity in ’Jubilee’. However, most enzymes studied were adversely affected by salinity compared to the control. These results indicate that tolerance to salinity exhibited by ’Lluteno’ should in part due to the high activity that exhibit antioxidant enzymes compared to ’Jubilee’.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.74 n.1 20142014-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000100014en10.4067/S0718-58392014000100014
institution Scielo Chile
collection Scielo Chile
language English
topic Antioxidant enzymes
lipid peroxidation
salt stress
Zea mays
spellingShingle Antioxidant enzymes
lipid peroxidation
salt stress
Zea mays
Carrasco-Ríos,Libertad
Pinto,Manuel
Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’
description Salinity is an important problem to crop production; affecting photosynthesis process which favors the production of reactive oxygen species. Plants have generated adaptation strategies to prevent oxidative damage caused by salinity. In this study we evaluated the effect of salinity on lipid peroxidation and antioxidant enzymes in leaves of corn (Zea mays L.) plants ’Lluteno’ (adapted to salinity) and ’Jubilee’ (improved variety). ’Lluteno’ is the only one corn capable to prosper in the Valley of Lluta under saline conditions (EC = 9.1 dS m-1) and the most widely cultivated crop in terms of area in the desert of northern Chile. Plants of 21 d old were subjected for 15 d to two saline treatments: 50 and 100 mM NaCl. Salinity caused a significant reduction in plant biomass, ca. 65% in ’Jubilee’ and 20% in ’Lluteno’ (P ≤ 0.05). The biomass reduction and oxidative damage to cell membranes caused by the generation of peroxides was significantly less in ’Lluteno’. The activity of superoxide dismutase (SOD), catalase (CAT), guaiacol peroxidase (GPX), and ascorbate peroxidase (APX) in ’Lluteno’ was significantly greater than in ’Jubilee’ in all treatments, while glutathione reductase (GR) had greater activity in ’Jubilee’. However, most enzymes studied were adversely affected by salinity compared to the control. These results indicate that tolerance to salinity exhibited by ’Lluteno’ should in part due to the high activity that exhibit antioxidant enzymes compared to ’Jubilee’.
author Carrasco-Ríos,Libertad
Pinto,Manuel
author_facet Carrasco-Ríos,Libertad
Pinto,Manuel
author_sort Carrasco-Ríos,Libertad
title Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’
title_short Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’
title_full Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’
title_fullStr Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’
title_full_unstemmed Effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’Lluteno’ and ’Jubilee’
title_sort effect of salt stress on antioxidant enzymes and lipid peroxidation in leaves in two contrasting corn, ’lluteno’ and ’jubilee’
publisher Instituto de Investigaciones Agropecuarias, INIA
publishDate 2014
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000100014
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