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Polyamines prevent NaCl-induced K+ efflux from pea mesophyll by blocking non-selective cation channels
Citation
Shabala, SN and Cuin, TA and Pottosin, Igor, Polyamines prevent NaCl-induced K+ efflux from pea mesophyll by blocking non-selective cation channels, FEBS Letters, 581, (10) pp. 1993-1999. ISSN 0014-5793 (2007) [Refereed Article]
DOI: doi:10.1016/j.febslet.2007.04.032
Abstract
Despite numerous reports implicating polyamines in plant salinity responses, the specific ionic mechanisms of polyamine-mediated adaptation to salt-stress remain elusive. In this work, we show that micromolar concentrations of polyamines are efficient in preventing NaCl-induced K+ efflux from the leaf mesophyll, and that this effect can be attributed to the inhibition of non-selective cation channels in mesophyll. The inhibition by externally applied polyamines developed slowly over time, suggesting a cytosolic mode of action. Overall, we suggest that elevated levels of cellular polyamine may modulate the activity of plasma membrane ion channels, improving ionic relations and assisting in a plant's adaptation to salinity. © 2007.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Biological Sciences |
| Research Group: | Plant biology |
| Research Field: | Plant physiology |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Horticultural crops |
| Objective Field: | Field grown vegetable crops |
| UTAS Author: | Shabala, SN (Professor Sergey Shabala) |
| UTAS Author: | Cuin, TA (Dr Tracey Cuin) |
| ID Code: | 48794 |
| Year Published: | 2007 |
| Web of Science® Times Cited: | 107 |
| Deposited By: | Agricultural Science |
| Deposited On: | 2007-08-01 |
| Last Modified: | 2009-09-22 |
| Downloads: | 0 |
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