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Literature DB >> 12226212

Na+-K+ Exchange at the Xylem/Symplast Boundary (Its Significance in the Salt Sensitivity of Soybean).

Abstract

We investigated the mechanism of Na+ reabsorption in exchange for K+ at the xylem/symplast boundary of soybean roots (Glycine max var Hodgson). The xylem vessels of excised roots were perfused with solutions of defined composition to discriminate between entry of ions into or reabsorption from the xylem vessels. In the presence of NaCl, the transport systems released K+ into the xylem sap and reabsorbed Na+. The Na+-K+ exchange was energized by proton-translocating ATPases, enhanced by external K+ concentration, and dependent on the anion permeability. Evidence was presented for the operation of H+/Na+ and H+/K+ antiporters at the xylem/symplast interface.

Entities: Chemical Species

Year: 1996 PMID： 12226212 PMCID： PMC157767 DOI： 10.1104/pp.110.2.705

Source DB: PubMed Journal: Plant Physiol ISSN： 0032-0889 Impact factor: 8.340

3 in total

1. In Vivo pH Regulation by a Na/H Antiporter in the Halotolerant Alga Dunaliella salina.

Authors: A Katz; M Bental; H Degani; M Avron
Journal: Plant Physiol Date: 1991-05 Impact factor: 8.340

2. Cytoplasmic pH Regulation in Acer pseudoplatanus Cells: II. Possible Mechanisms Involved in pH Regulation during Acid-Load.

Authors: Y Mathieu; J Guern; M Pean; C Pasquier; J C Beloeil; J Y Lallemand
Journal: Plant Physiol Date: 1986-11 Impact factor: 8.340

3. Extra- and Intracellular pH and Membrane Potential Changes Induced by K, Cl, H(2)PO(4), and NO(3) Uptake and Fusicoccin in Root Hairs of Limnobium stoloniferum.

Authors: C I Ullrich; A J Novacky
Journal: Plant Physiol Date: 1990-12 Impact factor: 8.340

3 in total

13 in total

1. The Arabidopsis thaliana salt tolerance gene SOS1 encodes a putative Na+/H+ antiporter.

Authors: H Shi; M Ishitani; C Kim; J K Zhu
Journal: Proc Natl Acad Sci U S A Date: 2000-06-06 Impact factor: 11.205

2. sas1, an Arabidopsis mutant overaccumulating sodium in the shoot, shows deficiency in the control of the root radial transport of sodium.

Authors: A Nublat; J Desplans; F Casse; P Berthomieu
Journal: Plant Cell Date: 2001-01 Impact factor: 11.277

Review 10. Understanding salinity responses and adopting 'omics-based' approaches to generate salinity tolerant cultivars of rice.

Authors: Priyanka Das; Kamlesh K Nutan; Sneh L Singla-Pareek; Ashwani Pareek
Journal: Front Plant Sci Date: 2015-09-09 Impact factor: 5.753

Na+-K+ Exchange at the Xylem/Symplast Boundary (Its Significance in the Salt Sensitivity of Soybean).

1. In Vivo pH Regulation by a Na/H Antiporter in the Halotolerant Alga Dunaliella salina.

2. Cytoplasmic pH Regulation in Acer pseudoplatanus Cells: II. Possible Mechanisms Involved in pH Regulation during Acid-Load.

3. Extra- and Intracellular pH and Membrane Potential Changes Induced by K, Cl, H(2)PO(4), and NO(3) Uptake and Fusicoccin in Root Hairs of Limnobium stoloniferum.

1. The Arabidopsis thaliana salt tolerance gene SOS1 encodes a putative Na+/H+ antiporter.

2. sas1, an Arabidopsis mutant overaccumulating sodium in the shoot, shows deficiency in the control of the root radial transport of sodium.

3. The putative plasma membrane Na(+)/H(+) antiporter SOS1 controls long-distance Na(+) transport in plants.

4. Physiological characterization of two genes for Na+ exclusion in durum wheat, Nax1 and Nax2.

Review 5. Na+ tolerance and Na+ transport in higher plants.

6. Reconstitution in yeast of the Arabidopsis SOS signaling pathway for Na+ homeostasis.

Review 7. Regulation of Na(+) fluxes in plants.

Review 8. Ion Transporters and Abiotic Stress Tolerance in Plants.

9. Salinity tolerance mechanisms in glycophytes: An overview with the central focus on rice plants.

Review 10. Understanding salinity responses and adopting 'omics-based' approaches to generate salinity tolerant cultivars of rice.