EFFECT OF EXOGENOUS PROLINE IN TWO SUGARCANE GENOTYPES GROWN IN VITRO UNDER SALT STRESS
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| Formato: | Artículo científico |
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Universidad Nacional de Colombia
2015
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| _version_ | 1876465479220985856 |
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| author | Maria Jaislanny L. MEDEIROS |
| author_facet | Maria Jaislanny L. MEDEIROS |
| contents | EFFECT OF EXOGENOUS PROLINE IN TWO SUGARCANE GENOTYPES GROWN IN VITRO UNDER SALT STRESS Maria Jaislanny L. MEDEIROS Marina Medeiros De A. SILVA Manuela Maria C. GRANJA Gilberto De SOUZA E SILVA JÚNIOR Terezinha CAMARA Lilia WILLADINO Biología oxidative stress Antioxidant enzymes Saccharum officinarum L Sugarcane (Saccharum officinarum L.) production is influenced by various abiotic stresses, including salt stress. Salinity can induce oxidative stress, which in turn damages biomolecules and cellular structures. However, such damage can be avoided or minimized by the enzymatic and non-enzymatic defense systems of plants. The aim of the study was to determine the effect of exogenous proline on Na+ and K+ content and on the activity of catalase, ascorbate peroxidase and peroxidase in two sugarcane genotypes (RB931011 and RB872552) grown in vitro under salt stress. The plants were grown for 20 days with or without 100 mM NaCl and exposed to 20 mM proline for varying period of time. The data were subjected to ANOVA factorial (two genotypes and five treatments), and the mean values were compared by Tukey test at a 5 % probability. Under salinity stress, both genotypes exhibited membrane integrity reduction, reduced total soluble protein content and unaltered or increased endogenous proline content. Exogenous proline reduced Na+ accumulation in a manner proportional to the exposition period at the amino acid. In both genotypes, antioxidant enzymes activity increased with the addition of NaCl. In conclusion, RB931011 genotype showed higher proline accumulation and increased in activity of the antioxidant enzymes, indicating better salt stress tolerance than in RB872552 genotype. 2015 artículo científico 0120-548X https://www.redalyc.org/articulo.oa?id=319038639006 en http://www.redalyc.org/revista.oa?id=3190 Acta Biológica Colombiana application/pdf Universidad Nacional de Colombia Acta Biológica Colombiana (Colombia) Num.2 Vol.20 |
| format | Artículo científico |
| id | redalyc_319038639006 |
| institution | Redalyc |
| language | en |
| publishDate | 2015 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | EFFECT OF EXOGENOUS PROLINE IN TWO SUGARCANE GENOTYPES GROWN IN VITRO UNDER SALT STRESS Maria Jaislanny L. MEDEIROS Biología oxidative stress Antioxidant enzymes Saccharum officinarum L EFFECT OF EXOGENOUS PROLINE IN TWO SUGARCANE GENOTYPES GROWN IN VITRO UNDER SALT STRESS Maria Jaislanny L. MEDEIROS Marina Medeiros De A. SILVA Manuela Maria C. GRANJA Gilberto De SOUZA E SILVA JÚNIOR Terezinha CAMARA Lilia WILLADINO Biología oxidative stress Antioxidant enzymes Saccharum officinarum L Sugarcane (Saccharum officinarum L.) production is influenced by various abiotic stresses, including salt stress. Salinity can induce oxidative stress, which in turn damages biomolecules and cellular structures. However, such damage can be avoided or minimized by the enzymatic and non-enzymatic defense systems of plants. The aim of the study was to determine the effect of exogenous proline on Na+ and K+ content and on the activity of catalase, ascorbate peroxidase and peroxidase in two sugarcane genotypes (RB931011 and RB872552) grown in vitro under salt stress. The plants were grown for 20 days with or without 100 mM NaCl and exposed to 20 mM proline for varying period of time. The data were subjected to ANOVA factorial (two genotypes and five treatments), and the mean values were compared by Tukey test at a 5 % probability. Under salinity stress, both genotypes exhibited membrane integrity reduction, reduced total soluble protein content and unaltered or increased endogenous proline content. Exogenous proline reduced Na+ accumulation in a manner proportional to the exposition period at the amino acid. In both genotypes, antioxidant enzymes activity increased with the addition of NaCl. In conclusion, RB931011 genotype showed higher proline accumulation and increased in activity of the antioxidant enzymes, indicating better salt stress tolerance than in RB872552 genotype. 2015 artículo científico 0120-548X https://www.redalyc.org/articulo.oa?id=319038639006 en http://www.redalyc.org/revista.oa?id=3190 Acta Biológica Colombiana application/pdf Universidad Nacional de Colombia Acta Biológica Colombiana (Colombia) Num.2 Vol.20 |
| title | EFFECT OF EXOGENOUS PROLINE IN TWO SUGARCANE GENOTYPES GROWN IN VITRO UNDER SALT STRESS |
| topic | Biología oxidative stress Antioxidant enzymes Saccharum officinarum L |
| url | https://www.redalyc.org/articulo.oa?id=319038639006 |