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Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium
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| Zeitschriftentitel: | Plant, Cell & Environment |
|---|---|
| Personen und Körperschaften: | , , , , |
| In: | Plant, Cell & Environment, 27, 2004, 1, S. 1-14 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
Wiley
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| Schlagwörter: |
| author_facet |
VOLKOV, V. WANG, B. DOMINY, P. J. FRICKE, W. AMTMANN, A. VOLKOV, V. WANG, B. DOMINY, P. J. FRICKE, W. AMTMANN, A. |
|---|---|
| author |
VOLKOV, V. WANG, B. DOMINY, P. J. FRICKE, W. AMTMANN, A. |
| spellingShingle |
VOLKOV, V. WANG, B. DOMINY, P. J. FRICKE, W. AMTMANN, A. Plant, Cell & Environment Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium Plant Science Physiology |
| author_sort |
volkov, v. |
| spelling |
VOLKOV, V. WANG, B. DOMINY, P. J. FRICKE, W. AMTMANN, A. 0140-7791 1365-3040 Wiley Plant Science Physiology http://dx.doi.org/10.1046/j.0016-8025.2003.01116.x <jats:title>ABSTRACT</jats:title><jats:p> <jats:italic>Thellungiella halophila</jats:italic> is a salt‐tolerant close relative of <jats:italic>Arabidopsis thaliana</jats:italic>. Significant mRNA similarity was confirmed by hybridization of <jats:italic>T. halophila</jats:italic> mRNA with the <jats:italic>A. thaliana</jats:italic> GeneChip ATH1. To establish a platform for future molecular comparison of the two species several physiological mechanisms, which may confer high salt tolerance to <jats:italic>T. halophila</jats:italic>, were investigated. Determination of ion content in shoots and roots of <jats:italic>A. thaliana</jats:italic> and <jats:italic>T. halophila</jats:italic> indicated different strategies of ion uptake and translocation from root to shoot in the two species. During salt stress <jats:italic>T. halophila</jats:italic> accumulated less sodium than <jats:italic>A. thaliana</jats:italic>. Tissue concentrations of sodium and potassium showed negative correlation in <jats:italic>A. thaliana</jats:italic> but not in <jats:italic>T. halophila</jats:italic>. Electrophysiological experiments proved high potassium/sodium selectivity of root plasma membrane channels in <jats:italic>T. halophila.</jats:italic> In particular, voltage‐independent currents were more selective for potassium in <jats:italic>T. halophila</jats:italic> than in <jats:italic>A. thaliana</jats:italic>. Single cell sampling of <jats:italic>T. halophila</jats:italic> leaves during salt exposure revealed increased concentrations of sodium and decreased concentrations of potassium in epidermal cells suggesting that this cell type could function to ensure storage of sodium and exchange of potassium with the rest of leaf. Application of salt resulted in a sharp drop of transpiration in <jats:italic>A. thaliana</jats:italic>. By contrast, transpiration in <jats:italic>T. halophila</jats:italic> responded more slowly and was only slightly inhibited by salt treatment, thus maintaining high water uptake and ion transport.</jats:p> <i>Thellungiella halophila</i>, a salt‐tolerant relative of <i>Arabidopsis thaliana</i>, possesses effective mechanisms to discriminate between potassium and sodium Plant, Cell & Environment |
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| title |
Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_unstemmed |
Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_full |
Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_fullStr |
Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_full_unstemmed |
Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_short |
Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_sort |
<i>thellungiella halophila</i>, a salt‐tolerant relative of <i>arabidopsis thaliana</i>, possesses effective mechanisms to discriminate between potassium and sodium |
| topic |
Plant Science Physiology |
| url |
http://dx.doi.org/10.1046/j.0016-8025.2003.01116.x |
| publishDate |
2004 |
| physical |
1-14 |
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<jats:title>ABSTRACT</jats:title><jats:p> <jats:italic>Thellungiella halophila</jats:italic> is a salt‐tolerant close relative of <jats:italic>Arabidopsis thaliana</jats:italic>. Significant mRNA similarity was confirmed by hybridization of <jats:italic>T. halophila</jats:italic> mRNA with the <jats:italic>A. thaliana</jats:italic> GeneChip ATH1. To establish a platform for future molecular comparison of the two species several physiological mechanisms, which may confer high salt tolerance to <jats:italic>T. halophila</jats:italic>, were investigated. Determination of ion content in shoots and roots of <jats:italic>A. thaliana</jats:italic> and <jats:italic>T. halophila</jats:italic> indicated different strategies of ion uptake and translocation from root to shoot in the two species. During salt stress <jats:italic>T. halophila</jats:italic> accumulated less sodium than <jats:italic>A. thaliana</jats:italic>. Tissue concentrations of sodium and potassium showed negative correlation in <jats:italic>A. thaliana</jats:italic> but not in <jats:italic>T. halophila</jats:italic>. Electrophysiological experiments proved high potassium/sodium selectivity of root plasma membrane channels in <jats:italic>T. halophila.</jats:italic> In particular, voltage‐independent currents were more selective for potassium in <jats:italic>T. halophila</jats:italic> than in <jats:italic>A. thaliana</jats:italic>. Single cell sampling of <jats:italic>T. halophila</jats:italic> leaves during salt exposure revealed increased concentrations of sodium and decreased concentrations of potassium in epidermal cells suggesting that this cell type could function to ensure storage of sodium and exchange of potassium with the rest of leaf. Application of salt resulted in a sharp drop of transpiration in <jats:italic>A. thaliana</jats:italic>. By contrast, transpiration in <jats:italic>T. halophila</jats:italic> responded more slowly and was only slightly inhibited by salt treatment, thus maintaining high water uptake and ion transport.</jats:p> |
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| description | <jats:title>ABSTRACT</jats:title><jats:p> <jats:italic>Thellungiella halophila</jats:italic> is a salt‐tolerant close relative of <jats:italic>Arabidopsis thaliana</jats:italic>. Significant mRNA similarity was confirmed by hybridization of <jats:italic>T. halophila</jats:italic> mRNA with the <jats:italic>A. thaliana</jats:italic> GeneChip ATH1. To establish a platform for future molecular comparison of the two species several physiological mechanisms, which may confer high salt tolerance to <jats:italic>T. halophila</jats:italic>, were investigated. Determination of ion content in shoots and roots of <jats:italic>A. thaliana</jats:italic> and <jats:italic>T. halophila</jats:italic> indicated different strategies of ion uptake and translocation from root to shoot in the two species. During salt stress <jats:italic>T. halophila</jats:italic> accumulated less sodium than <jats:italic>A. thaliana</jats:italic>. Tissue concentrations of sodium and potassium showed negative correlation in <jats:italic>A. thaliana</jats:italic> but not in <jats:italic>T. halophila</jats:italic>. Electrophysiological experiments proved high potassium/sodium selectivity of root plasma membrane channels in <jats:italic>T. halophila.</jats:italic> In particular, voltage‐independent currents were more selective for potassium in <jats:italic>T. halophila</jats:italic> than in <jats:italic>A. thaliana</jats:italic>. Single cell sampling of <jats:italic>T. halophila</jats:italic> leaves during salt exposure revealed increased concentrations of sodium and decreased concentrations of potassium in epidermal cells suggesting that this cell type could function to ensure storage of sodium and exchange of potassium with the rest of leaf. Application of salt resulted in a sharp drop of transpiration in <jats:italic>A. thaliana</jats:italic>. By contrast, transpiration in <jats:italic>T. halophila</jats:italic> responded more slowly and was only slightly inhibited by salt treatment, thus maintaining high water uptake and ion transport.</jats:p> |
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| spelling | VOLKOV, V. WANG, B. DOMINY, P. J. FRICKE, W. AMTMANN, A. 0140-7791 1365-3040 Wiley Plant Science Physiology http://dx.doi.org/10.1046/j.0016-8025.2003.01116.x <jats:title>ABSTRACT</jats:title><jats:p> <jats:italic>Thellungiella halophila</jats:italic> is a salt‐tolerant close relative of <jats:italic>Arabidopsis thaliana</jats:italic>. Significant mRNA similarity was confirmed by hybridization of <jats:italic>T. halophila</jats:italic> mRNA with the <jats:italic>A. thaliana</jats:italic> GeneChip ATH1. To establish a platform for future molecular comparison of the two species several physiological mechanisms, which may confer high salt tolerance to <jats:italic>T. halophila</jats:italic>, were investigated. Determination of ion content in shoots and roots of <jats:italic>A. thaliana</jats:italic> and <jats:italic>T. halophila</jats:italic> indicated different strategies of ion uptake and translocation from root to shoot in the two species. During salt stress <jats:italic>T. halophila</jats:italic> accumulated less sodium than <jats:italic>A. thaliana</jats:italic>. Tissue concentrations of sodium and potassium showed negative correlation in <jats:italic>A. thaliana</jats:italic> but not in <jats:italic>T. halophila</jats:italic>. Electrophysiological experiments proved high potassium/sodium selectivity of root plasma membrane channels in <jats:italic>T. halophila.</jats:italic> In particular, voltage‐independent currents were more selective for potassium in <jats:italic>T. halophila</jats:italic> than in <jats:italic>A. thaliana</jats:italic>. Single cell sampling of <jats:italic>T. halophila</jats:italic> leaves during salt exposure revealed increased concentrations of sodium and decreased concentrations of potassium in epidermal cells suggesting that this cell type could function to ensure storage of sodium and exchange of potassium with the rest of leaf. Application of salt resulted in a sharp drop of transpiration in <jats:italic>A. thaliana</jats:italic>. By contrast, transpiration in <jats:italic>T. halophila</jats:italic> responded more slowly and was only slightly inhibited by salt treatment, thus maintaining high water uptake and ion transport.</jats:p> <i>Thellungiella halophila</i>, a salt‐tolerant relative of <i>Arabidopsis thaliana</i>, possesses effective mechanisms to discriminate between potassium and sodium Plant, Cell & Environment |
| spellingShingle | VOLKOV, V., WANG, B., DOMINY, P. J., FRICKE, W., AMTMANN, A., Plant, Cell & Environment, Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium, Plant Science, Physiology |
| title | Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_full | Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_fullStr | Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_full_unstemmed | Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_short | Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| title_sort | <i>thellungiella halophila</i>, a salt‐tolerant relative of <i>arabidopsis thaliana</i>, possesses effective mechanisms to discriminate between potassium and sodium |
| title_unstemmed | Thellungiella halophila, a salt‐tolerant relative of Arabidopsis thaliana, possesses effective mechanisms to discriminate between potassium and sodium |
| topic | Plant Science, Physiology |
| url | http://dx.doi.org/10.1046/j.0016-8025.2003.01116.x |