Title | Regulation of Na+ and K+ homeostasis in plants: towards improved salt stress tolerance in crop plants. |
Publication Type | Journal Article |
Year of Publication | 2017 |
Authors | Almeida, DM, M Oliveira, M, Saibo, NJM |
Journal | Genet Mol Biol |
Volume | 40 |
Issue | 1 suppl 1 |
Pagination | 326-345 |
Date Published | 2017 |
ISSN | 1415-4757 |
Abstract | <p>Soil salinity is a major abiotic stress that results in considerable crop yield losses worldwide. However, some plant genotypes show a high tolerance to soil salinity, as they manage to maintain a high K+/Na+ ratio in the cytosol, in contrast to salt stress susceptible genotypes. Although, different plant genotypes show different salt tolerance mechanisms, they all rely on the regulation and function of K+ and Na+ transporters and H+ pumps, which generate the driving force for K+ and Na+ transport. In this review we will introduce salt stress responses in plants and summarize the current knowledge about the most important ion transporters that facilitate intra- and intercellular K+ and Na+ homeostasis in these organisms. We will describe and discuss the regulation and function of the H+-ATPases, H+-PPases, SOS1, HKTs, and NHXs, including the specific tissues where they work and their response to salt stress.</p> |
DOI | 10.1590/1678-4685-GMB-2016-0106 |
Alternate Journal | Genet Mol Biol |
PubMed ID | 28350038 |
PubMed Central ID | PMC5452131 |