Abstract
A yeast strain carrying disruptions in TRK1 and ENA genes was very sensitive to Na+ because uptake discriminated poorly between K+ and Na+, and Na+ efflux was insignificant. Transformation with TRK1 and ENA1 restored discrimination, Na+ efflux and Na+ tolerance. Increasing external Ca2+ increased Na+ tolerance almost in the same proportion in TRK1 enal cells and in trkl ENAI cells, suggesting an unspecific effect of this cation. By using a vacuolar ATPase mutant, the role of the vacuole in Na+ tolerance was also demonstrated. The yeast model of Na+ exclusion and Na+ tolerance may be extended to plants.
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Dates
Type | When |
---|---|
Created | 19 years, 3 months ago (May 1, 2006, 1:16 a.m.) |
Deposited | 1 year, 10 months ago (Oct. 24, 2023, 8:14 p.m.) |
Indexed | 3 weeks, 3 days ago (Aug. 5, 2025, 8:48 a.m.) |
Issued | 31 years, 8 months ago (Dec. 1, 1993) |
Published | 31 years, 8 months ago (Dec. 1, 1993) |
Published Online | 19 years, 4 months ago (April 28, 2006) |
Published Print | 31 years, 8 months ago (Dec. 1, 1993) |
@article{Haro_1993, title={Genetic basis of sodium exclusion and sodium tolerance in yeast. A model for plants}, volume={89}, ISSN={1399-3054}, url={http://dx.doi.org/10.1111/j.1399-3054.1993.tb05298.x}, DOI={10.1111/j.1399-3054.1993.tb05298.x}, number={4}, journal={Physiologia Plantarum}, publisher={Wiley}, author={Haro, Rosario and Bañuelos, María A. and Quintero, Francisco J. and Rubio, Francisco and Rodríguez‐Navarro, Alonso}, year={1993}, month=dec, pages={868–874} }