Control of salt transport from roots to shoots of wheat in saline soil

Functional Plant Biology : FPB
Shazia HusainRana Munns

Abstract

Wheat genotypes with 5-fold difference in shoot Na+ concentrations were studied over a salinity range of 1-150 mm NaCl and CaCl2 of 0.5-10 mm to assess their performance in saline and sodic soils. All genotypes had a maximum shoot Na+ concentration at 50 mm external NaCl when the supplemental Ca2+ provided an activity of 1 mm or more. Shoot Na+ concentrations either stayed constant from 50 to 150 mm external NaCl, or decreased in some genotypes at the higher salinity. Calculated rates of root uptake, and root : shoot transport, were at a maximum at 50 mm NaCl in all genotypes, and decreased at higher NaCl in some genotypes, indicating feedback regulation. K+ showed a pattern inverse to that of Na+. Cl- uptake and transport rates increased linearly with increasing salinity, and differed little between genotypes. Increasing external Ca2+ concentration reduced the accumulation of Na+ in the shoot, the effects being greater in the low Na+ genotypes, and greater as the salinity increased, indicating that the plateau in shoot Na+ concentration relied on the maintenance of a minimal Ca2+ activity of 1 mm. Increasing external Ca2+concentration did not reduce the root Na+ concentration, however, suggesting that Ca2+ influenced the loadi...Continue Reading

References

Feb 14, 2002·Plant, Cell & Environment·R. Munns
May 1, 1990·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·A R YeoT J Flowers
Sep 1, 1987·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·J GorhamC N Law
Jul 1, 2003·Functional Plant Biology : FPB·Sergey ShabalaElizabeth Van Volkenburgh
Aug 1, 2002·Functional Plant Biology : FPB·Anna Rita RivelliA G Tony Condon

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Citations

Aug 17, 2005·The New Phytologist·Rana Munns
Jul 26, 2006·Plant Biology·M C del Martínez-BallestaM Carvajal
May 30, 2015·Plant Cell Reports·Yong-Xing ZhuHai-Jun Gong
Apr 22, 2019·The New Phytologist·Rana MunnsCaitlin S Byrt
Mar 3, 2006·Journal of Experimental Botany·Rana MunnsAndré Läuchli
Mar 4, 2006·Journal of Experimental Botany·Timothy D ColmerRana Munns
Nov 10, 2009·Plant, Cell & Environment·Natasha L Teakle, Stephen D Tyerman
Dec 2, 2010·Journal of Experimental Botany·Afrasyab RahnamaMichelle Watt
Nov 23, 2018·International Journal of Molecular Sciences·Min ChenBaoshan Wang
Apr 21, 2019·The New Phytologist·Rana MunnsStephen D Tyerman
Dec 1, 2016·Functional Plant Biology : FPB·Rana MunnsTimothy D Colmer
Jul 15, 2005·Journal of Experimental Botany·Alaina J GarthwaiteTimothy D Colmer
May 1, 2013·Functional Plant Biology : FPB·Megan C SheldenAntony Bacic
Dec 1, 2004·Functional Plant Biology : FPB·Megan P LindsayRana Munns
Feb 3, 2021·International Journal of Phytoremediation·Ashwani KumarBabu Lal Meena
Jun 14, 2021·Environmental Monitoring and Assessment·Israel Godwin NwovuObinna A Oje

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