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Choline but not its derivative betaine blocks slow vacuolar channels in the halophyte Chenopodium quinoa: Implications for salinity stress responses
Citation
Pottosin, I and Bonales-Alatorre, E and Shabala, S, Choline but not its derivative betaine blocks slow vacuolar channels in the halophyte Chenopodium quinoa: Implications for salinity stress responses, FEBS Letters, 588, (21) pp. 3918-3923. ISSN 0014-5793 (2014) [Refereed Article]
Copyright Statement
Copyright 2014 Federation of European Biochemical Societies. Published by Elsevier B.V.
DOI: doi:10.1016/j.febslet.2014.09.003
Abstract
Activity of tonoplast slow vacuolar (SV, or TPC1) channels has to be under a tight control, to avoid undesirable leak of cations stored in the vacuole. This is particularly important for salt-grown plants, to ensure efficient vacuolar Na+ sequestration. In this study we show that choline, a cationic precursor of glycine betaine, efficiently blocks SV channels in leaf and root vacuoles of the two chenopods, Chenopodium quinoa (halophyte) and Beta vulgaris (glycophyte). At the same time, betaine and proline, two major cytosolic organic osmolytes, have no significant effect on SV channel activity. Physiological implications of these findings are discussed.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Keywords: | SV channel, choline, glycine betaine, proline, salinity stress, adaptation |
| Research Division: | Biological Sciences |
| Research Group: | Plant biology |
| Research Field: | Plant physiology |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Grains and seeds |
| Objective Field: | Grains and seeds not elsewhere classified |
| UTAS Author: | Bonales-Alatorre, E (Dr Edgar Bonales Alatorre) |
| UTAS Author: | Shabala, S (Professor Sergey Shabala) |
| ID Code: | 98158 |
| Year Published: | 2014 |
| Web of Science® Times Cited: | 21 |
| Deposited By: | Tasmanian Institute of Agriculture |
| Deposited On: | 2015-02-03 |
| Last Modified: | 2017-11-02 |
| Downloads: | 0 |
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