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Provedor de dados:  Genet. Mol. Biol.
País:  Brazil
Título:  Regulation of Na+ and K+ homeostasis in plants: towards improved salt stress tolerance in crop plants
Autores:  Almeida,Diego M.
Oliveira,M. Margarida
Saibo,Nelson J. M.
Data:  2017-01-01
Ano:  2017
Palavras-chave:  Salinity
Sodium
Potassium
Proton pumps
Ion transporters
Resumo:  Abstract 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.
Tipo:  Info:eu-repo/semantics/article
Idioma:  Inglês
Identificador:  http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572017000200326
Editor:  Sociedade Brasileira de Genética
Relação:  10.1590/1678-4685-gmb-2016-0106
Formato:  text/html
Fonte:  Genetics and Molecular Biology v.40 n.1 suppl.1 2017
Direitos:  info:eu-repo/semantics/openAccess
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