Salt Tolerance Conferred by Overexpression of a Vacuolar Na + /H + Antiport in Arabidopsis-Reference-Cited by-同舟云学术

Salt Tolerance Conferred by Overexpression of a Vacuolar Na + /H + Antiport in Arabidopsis

Published:1999-08-20 Issue:5431 Volume:285 Page:1256-1258
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Apse Maris P.¹,Aharon Gilad S.¹,Snedden Wayne A.¹,Blumwald Eduardo¹

Affiliation:

1. Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada.

Abstract

Agricultural productivity is severely affected by soil salinity. One possible mechanism by which plants could survive salt stress is to compartmentalize sodium ions away from the cytosol. Overexpression of a vacuolar Na + /H + antiport from Arabidopsis thaliana in Arabidopsis plants promotes sustained growth and development in soil watered with up to 200 millimolar sodium chloride. This salinity tolerance was correlated with higher-than-normal levels of AtNHX1 transcripts, protein, and vacuolar Na + /H + (sodium/proton) antiport activity. These results demonstrate the feasibility of engineering salt tolerance in plants.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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