Na + /H + antiporters are differentially regulated in response to NaCl stress in leaves and roots of Mesembryanthemum crystallinum
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چکیده
منابع مشابه
Early salt stress effects on the differential expression of vacuolar H(+)-ATPase genes in roots and leaves of Mesembryanthemum crystallinum.
In Mesembryanthemum crystallinum, the salt stress-induced metabolic switch from C3 photosynthesis to Crassulacean acid metabolism is accompanied by major changes in gene expression. However, early effects of salt exposure (i.e. prior to Crassulacean acid metabolism induction) on genes coding for vacuolar transport functions have not yet been studied. Therefore, the expression of vacuolar H(+)-A...
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The Arabidopsis thaliana vacuolar Na+/H+ antiporter AtNHX1 is a salt tolerance determinant. Predicted amino acid sequence similarity, protein topology and the presence of functional domains conserved in AtNHX1 and prototypical mammalian NHE Na+/H+ exchangers led to the identification of five additional AtNHX genes (AtNHX2-6). The AtNHX1 and AtNHX2 mRNAs are the most prevalent transcripts among ...
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Tonoplast vesicles were isolated from leaf mesophyll tissue of the inducible Crassulacean acid metabolism plant Mesembryanthemum crystallinum to investigate the mechanism of vacuolar Na+ accumulation in this halophilic species. In 8-week-old plants exposed to 200 mM NaCl for 2 weeks, tonoplast H+-ATPase activity was approximately doubled compared with control plants of the same age, as determin...
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BACKGROUND Two mammalian digitalis-like factors, an ouabain-like compound (OLC) and marinobufagenin (MBG), exhibit specificity to alpha-3 and alpha-1 Na(+),K(+)-ATPase isoforms, respectively. We compared regulation of MBG and OLC by acute NaCl loading in Dahl salt-sensitive (DS) and salt-resistant (DR) rats. METHODS AND RESULTS An intraperitoneal NaCl load (0.8 g/kg) was given to adult male r...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 2010
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.2010.03208.x