Regulation of Na+ and K+ homeostasis in plants: towards improved salt stress tolerance in crop plants.
Genet Mol Biol
; 40(1 suppl 1): 326-345, 2017.
Article
em En
| MEDLINE
| ID: mdl-28350038
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.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Genet Mol Biol
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Portugal
País de publicação:
Brasil