Metabolic and gene expression changes in higher plants in response to salt stress
Salinity limits agricultural production. The detrimental effects of salinity result from both the water deficit and the specific action of ions. Salt stress initiates molecular events involving the change of expression of unique genes and genes functioning in normal cell metabolism. Exposure of deta...
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| Lenguaje: | Español |
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Facultad de Ciencias Agropecuarias
1992
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/agris/article/view/2940 |
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I10-R352-article-29402024-09-05T14:39:43Z Metabolic and gene expression changes in higher plants in response to salt stress Cambios metabólicos y de expresión génica en plantas superiores en respuesta al estrés salino Valpuesta, V. Berteli, F. Pérez-Prat, E. Corrales, E. Narasimham, M. Botella, M. A. Bressan, R. A. Pliego, F. Hasegawa, P. M. salt stress proline glutamate synthase esculentum cDNA mRNA ATPasa cell cultures estrés salino prolina glutamato sintasa esculentum cDNA mRNA ATPasa cultvos cultivares Salinity limits agricultural production. The detrimental effects of salinity result from both the water deficit and the specific action of ions. Salt stress initiates molecular events involving the change of expression of unique genes and genes functioning in normal cell metabolism. Exposure of detached tomato leaves to high NaCl concentration (12 g/L, 12 h) resulted in a significant increase in activity and protein ferredoxin-dependent glutamate synthase. This increase may be explained by the role of this enzyme in the synthesis of glutamate required for the proline synthesis occurring under salt stress in this plant tissue. On the other hand, NaCl shock of tobacco cells adapted to 428 mM NaCl induced a two-fold increase in the level of a messenger RNA encoding for a putative endoplasmic reticulum Ca²⁺-ATPase. This change may be related to the maintenance of ion homeostasis in tobacco cells, which is critical for their adaptation to a saline environment. The changes reported for tomato and tobacco constitute partial aspects of the complex plant response to salt stress. La salinización del suelo y de las aguas de riego son factores que limitan de forma importante la producción agrícola. Los daños causados por la salinidad en plantas son el resultado tanto del déficit hídrico como del efecto negativo de altas concentraciones salinas. A nivel molecular, la exposición a sal inicia cambios en la expresión tanto de nuevos genes como de genes constitutivos. En hojas de tomate, hemos encontrado que tanto la actividad como el contenido de proteína enzimática glutamato sintasa dependiente de ferredoxina aumentan significativamente como resultado de la exposición de este tejido vegetal a elevadas concentraciones de NaCl (12 g/L, 12 h). Este cambio se explica por la función esencial de esta enzima en la síntesis del ácido glutámico, que es precursor directo de la prolina, sintetizada como soluto osmótico compatible en esta especie. Por otro lado, estudios en cultivos celulares de tabaco adaptados a concentraciones de NaCl de 428 mM muestran un aumento de 2 veces en el nivel de ARN mensajero de una posible Ca²+-ATPasa de retículo endoplásmico. Los cambios observados forman parte de la respuesta de estos tipos celulares para mantener los gradientes iónicos necesarios, intra y extracelulares, que les confieren tolerancia al medio salino. Facultad de Ciencias Agropecuarias 1992-01-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unc.edu.ar/index.php/agris/article/view/2940 10.31047/1668.298x.v9.n1.2940 AgriScientia; Vol. 9 No. 1 (1992); 55-63 AgriScientia; Vol. 9 Núm. 1 (1992); 55-63 1668-298X 10.31047/1668.298x.v9.n1 spa https://revistas.unc.edu.ar/index.php/agris/article/view/2940/2766 Derechos de autor 1992 V. Valpuesta, F. Berteli, E. Pérez-Prat, E. Corrales, M. Narasimham, M. A. Botella, R. A. Bressan, F. Pliego, P. M. Hasegawa https://creativecommons.org/licenses/by-sa/4.0 |
| institution |
Universidad Nacional de Córdoba |
| institution_str |
I-10 |
| repository_str |
R-352 |
| container_title_str |
AgriScientia |
| language |
Español |
| format |
Artículo revista |
| topic |
salt stress proline glutamate synthase esculentum cDNA mRNA ATPasa cell cultures estrés salino prolina glutamato sintasa esculentum cDNA mRNA ATPasa cultvos cultivares |
| spellingShingle |
salt stress proline glutamate synthase esculentum cDNA mRNA ATPasa cell cultures estrés salino prolina glutamato sintasa esculentum cDNA mRNA ATPasa cultvos cultivares Valpuesta, V. Berteli, F. Pérez-Prat, E. Corrales, E. Narasimham, M. Botella, M. A. Bressan, R. A. Pliego, F. Hasegawa, P. M. Metabolic and gene expression changes in higher plants in response to salt stress |
| topic_facet |
salt stress proline glutamate synthase esculentum cDNA mRNA ATPasa cell cultures estrés salino prolina glutamato sintasa esculentum cDNA mRNA ATPasa cultvos cultivares |
| author |
Valpuesta, V. Berteli, F. Pérez-Prat, E. Corrales, E. Narasimham, M. Botella, M. A. Bressan, R. A. Pliego, F. Hasegawa, P. M. |
| author_facet |
Valpuesta, V. Berteli, F. Pérez-Prat, E. Corrales, E. Narasimham, M. Botella, M. A. Bressan, R. A. Pliego, F. Hasegawa, P. M. |
| author_sort |
Valpuesta, V. |
| title |
Metabolic and gene expression changes in higher plants in response to salt stress |
| title_short |
Metabolic and gene expression changes in higher plants in response to salt stress |
| title_full |
Metabolic and gene expression changes in higher plants in response to salt stress |
| title_fullStr |
Metabolic and gene expression changes in higher plants in response to salt stress |
| title_full_unstemmed |
Metabolic and gene expression changes in higher plants in response to salt stress |
| title_sort |
metabolic and gene expression changes in higher plants in response to salt stress |
| description |
Salinity limits agricultural production. The detrimental effects of salinity result from both the water deficit and the specific action of ions. Salt stress initiates molecular events involving the change of expression of unique genes and genes functioning in normal cell metabolism. Exposure of detached tomato leaves to high NaCl concentration (12 g/L, 12 h) resulted in a significant increase in activity and protein ferredoxin-dependent glutamate synthase. This increase may be explained by the role of this enzyme in the synthesis of glutamate required for the proline synthesis occurring under salt stress in this plant tissue. On the other hand, NaCl shock of tobacco cells adapted to 428 mM NaCl induced a two-fold increase in the level of a messenger RNA encoding for a putative endoplasmic reticulum Ca²⁺-ATPase. This change may be related to the maintenance of ion homeostasis in tobacco cells, which is critical for their adaptation to a saline environment. The changes reported for tomato and tobacco constitute partial aspects of the complex plant response to salt stress. |
| publisher |
Facultad de Ciencias Agropecuarias |
| publishDate |
1992 |
| url |
https://revistas.unc.edu.ar/index.php/agris/article/view/2940 |
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2024-09-03T22:15:55Z |
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2024-09-10T02:51:40Z |
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