PMID: 18724408Aug 30, 2008Paper

Potassium transport and plant salt tolerance

Physiologia Plantarum
Sergey Shabala, Tracey A Cuin

Abstract

Salinity is a major abiotic stress affecting approximately 7% of the world's total land area resulting in billion dollar losses in crop production around the globe. Recent progress in molecular genetics and plant electrophysiology suggests that the ability of a plant to maintain a high cytosolic K+/Na+ ratio appears to be critical to plant salt tolerance. So far, the major efforts of plant breeders have been aimed at improving this ratio by minimizing Na+ uptake and transport to shoot. In this paper, we discuss an alternative approach, reviewing the molecular and ionic mechanisms contributing to potassium homeostasis in salinized plant tissues and discussing prospects for breeding for salt tolerance by targeting this trait. Major K+ transporters and their functional expression under saline conditions are reviewed and the multiple modes of their control are evaluated, including ameliorative effects of compatible solutes, polyamines and supplemental calcium. Subsequently, the genetic aspects of inheritance of K+ transport 'markers' are discussed in the general context of salt tolerance as a polygenic trait. The molecular identity of 'salt tolerance' genes is analysed, and prospects for future research and breeding are examined.

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Citations

Oct 15, 2009·Chemical Reviews·Elizabeth C Theil, Dixie J Goss
Mar 10, 2009·Journal of Experimental Botany·Sergey Shabala
Aug 25, 2010·Journal of Experimental Botany·Yuda HariadiSergey Shabala
Jan 29, 2011·Journal of Experimental Botany·Ehsan TavakkoliGlenn K McDonald
Jul 21, 2011·Plant & Cell Physiology·Fernando AlemánFrancisco Rubio
Mar 4, 2010·Microbiology and Molecular Biology Reviews : MMBR·Joaquín AriñoHana Sychrová
Jan 14, 2011·BMC Evolutionary Biology·Lothar WisslerErich Bornberg-Bauer
Jan 15, 2014·Journal of Experimental Botany·Emanuela MonettiFrançois Bouteau
Mar 8, 2014·Journal of Experimental Botany·Yujie FangLizhong Xiong
Mar 3, 2010·Annual Review of Phytopathology·Michal ShoreshFatemeh Mastouri
Mar 3, 2010·Annual Review of Plant Biology·Ron Mittler, Eduardo Blumwald
Jul 23, 2014·Planta·William J PerceySergey Shabala
Oct 29, 2015·Journal of Experimental Botany·Sergey ShabalaIgor Pottosin
Jan 6, 2016·Plant Physiology and Biochemistry : PPB·Boning CaoAichun Zhao
Dec 27, 2015·Plant Science : an International Journal of Experimental Plant Biology·Sergey ShabalaJayakumar Bose
Jan 26, 2016·Microbiological Research·Ana Lúcia Leitão, Francisco J Enguita

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