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The Putative Plasma Membrane Na+/H+ Antiporter SOS1 Controls Long-Distance Na+ Transport in Plants Article, publication date, and citation information can be found at
TLDR
The salt tolerance locus SOS1 from Arabidopsis has been shown to encode a putative plasma membrane Na+/H+ antiporter, and a model in which SOS1 functions in retrieving Na+ from the xylem stream under severe salt stress, whereas under mild salt stress it may function in loading Na+ into the Xylem. Expand
Differential expression and function of Arabidopsis thaliana NHX Na+/H+ antiporters in the salt stress response.
TLDR
Together, these results implicate AtNHX2 and 5, together with At NHX1, as salt tolerance determinants, and indicate that AtNHx2 has a major function in vacuolar compartmentalization of Na+. Expand
Reconstitution in yeast of the Arabidopsis SOS signaling pathway for Na+ homeostasis
TLDR
The results provide an example of functional reconstitution of a plant response pathway in a heterologous system and demonstrate that the SOS1 ion transporter, the SOS2 protein kinase, and its associated Ca2+ sensor SOS3 constitute a functional module. Expand
Alkali cation exchangers: roles in cellular homeostasis and stress tolerance.
TLDR
Properties of the plasma membrane SOS1 protein from Arabidopsis thaliana, a highly specific Na+/H+ exchanger that catalyses Na+ efflux and that regulates its root/shoot distribution, has revealed surprising interactions with K+ uptake mechanisms by roots, and proteins of the NHX family are endosomal transporters that play critical roles in K+ homeostasis, luminal pH control, and vesicle trafficking. Expand
Conservation of the Salt Overly Sensitive Pathway in Rice1[C][W][OA]
TLDR
The identification of a rice plasma membrane Na+/H+ exchanger that is the functional homolog of the Arabidopsis salt overly sensitive 1 (SOS1) protein shows a high degree of structural conservation among the SOS proteins from dicots and monocots and demonstrates that the SOS salt tolerance pathway operates in cereals. Expand
The SAL1 gene of Arabidopsis, encoding an enzyme with 3'(2'),5'-bisphosphate nucleotidase and inositol polyphosphate 1-phosphatase activities, increases salt tolerance in yeast.
TLDR
It is proposed that the product of SAL1 participates in the sulfur assimilation pathway as well as in the phosphoinositide signaling pathway and that changes in the latter may affect Na+ and Li+ fluxes. Expand
Loss of Halophytism by Interference with SOS1 Expression1[W][OA]
TLDR
Reduction in SOS1 expression changed Thellungiella that normally can grow in seawater-strength sodium chloride solutions into a plant as sensitive to Na+ as Arabidopsis. Expand
The AtNHX1 exchanger mediates potassium compartmentation in vacuoles of transgenic tomato.
TLDR
This work shows that AtNHX1 has a critical involvement in the subcellular partitioning of K(+), which in turn affects plant K(+) nutrition and Na(+) tolerance, and strongly suggests that NHX proteins are likely candidates for the H(+)-linked K(+, transport that is thought to facilitate active K(-) uptake at the tonoplast, and the partitioning between vacuole and cytosol. Expand
Regulation of Vacuolar Na+/H+ Exchange in Arabidopsis thaliana by the Salt-Overly-Sensitive (SOS) Pathway*
TLDR
The results demonstrate that the Tonoplast Na+/H+ exchanger in Arabidopsis is a target of the SOS regulatory pathway, there are branches to the SOS pathway, and there may be coordinate regulation of the exchangers in the tonoplast and plasma membrane. Expand
Release of SOS2 kinase from sequestration with GIGANTEA determines salt tolerance in Arabidopsis.
TLDR
The GI-SOS2 interaction introduces a higher order regulatory circuit that can explain in molecular terms, the long observed connection between floral transition and adaptive environmental stress tolerance in Arabidopsis. Expand
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