Potato plants bearing a vacuolar Na+/H+ antiporter HvNHX2 from barley are characterized by improved salt tolerance

Potato plants bearing a vacuolar Na+/H+ antiporter HvNHX2 from barley are characterized by... Two cultivars of potato (Solanum tuberosum L.) were transformed with a barley antiporter gene HvNHX2 driven by the CaMV 35S promoter. The expressed transgene conferred a higher NaCl tolerance to one of the cultivars. Under salt stress, the more salt-tolerant transgenic plants had longer roots, higher dry weight, and suppressed cell expansion as compared to wild-type plants. The salt tolerance of the plants grown in vitro was not accompanied by elevated total sodium in any plant organs tested. Instead, higher potassium was found in roots of transgenic plants. Possible mechanisms of plant salt tolerance are discussed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Potato plants bearing a vacuolar Na+/H+ antiporter HvNHX2 from barley are characterized by improved salt tolerance

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2010 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Sciences ; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443710050134
Publisher site
See Article on Publisher Site

Abstract

Two cultivars of potato (Solanum tuberosum L.) were transformed with a barley antiporter gene HvNHX2 driven by the CaMV 35S promoter. The expressed transgene conferred a higher NaCl tolerance to one of the cultivars. Under salt stress, the more salt-tolerant transgenic plants had longer roots, higher dry weight, and suppressed cell expansion as compared to wild-type plants. The salt tolerance of the plants grown in vitro was not accompanied by elevated total sodium in any plant organs tested. Instead, higher potassium was found in roots of transgenic plants. Possible mechanisms of plant salt tolerance are discussed.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Sep 2, 2010

References

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