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rdf:type |
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lifeskim:mentions |
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pubmed:issue |
2-3
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pubmed:dateCreated |
2000-5-18
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pubmed:databankReference |
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pubmed:abstractText |
Vacuolar compartmentation of Na(+) is an essential mechanism for salinity tolerance since it lowers cytosolic Na(+) levels while contributing to osmotic adjustment for cell turgor and expansion. The AtNHX1 protein of Arabidopsis thaliana substituted functionally for ScNHX1, the endosomal Na(+)/H(+) antiporter of yeast. Ion tolerance conferred by AtNHX1 and ScNHX1 correlated with ion uptake into an intracellular pool that was energetically dependent on the vacuolar (H(+))ATPase. AtNHX1 localized to vacuolar membrane fractions of yeast. Hence, both transporters share an evolutionarily conserved function in Na(+) compartmentation. AtNHX1 mRNA levels were upregulated by ABA and NaCl treatment in leaf but not in root tissue.
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pubmed:language |
eng
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pubmed:journal |
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pubmed:citationSubset |
IM
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pubmed:chemical |
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pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0014-5793
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pubmed:author |
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pubmed:issnType |
Print
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pubmed:day |
14
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pubmed:volume |
471
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
224-8
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:10767428-Abscisic Acid,
pubmed-meshheading:10767428-Arabidopsis,
pubmed-meshheading:10767428-Cations,
pubmed-meshheading:10767428-Cloning, Molecular,
pubmed-meshheading:10767428-Conserved Sequence,
pubmed-meshheading:10767428-Endosomes,
pubmed-meshheading:10767428-Evolution, Molecular,
pubmed-meshheading:10767428-Gene Expression Regulation, Plant,
pubmed-meshheading:10767428-Genetic Complementation Test,
pubmed-meshheading:10767428-Hydrogen-Ion Concentration,
pubmed-meshheading:10767428-Intracellular Membranes,
pubmed-meshheading:10767428-Kinetics,
pubmed-meshheading:10767428-Lithium,
pubmed-meshheading:10767428-Molecular Sequence Data,
pubmed-meshheading:10767428-Mutation,
pubmed-meshheading:10767428-Osmolar Concentration,
pubmed-meshheading:10767428-Plant Leaves,
pubmed-meshheading:10767428-Plant Roots,
pubmed-meshheading:10767428-Saccharomyces cerevisiae,
pubmed-meshheading:10767428-Sodium,
pubmed-meshheading:10767428-Sodium-Hydrogen Antiporter,
pubmed-meshheading:10767428-Vacuoles
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pubmed:year |
2000
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pubmed:articleTitle |
Functional conservation between yeast and plant endosomal Na(+)/H(+) antiporters.
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pubmed:affiliation |
Instituto de Recursos Naturales y Agrobiología, Consejo Superior de Investigaciones Científicas, P.O. Box 1052, Seville, Spain.
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pubmed:publicationType |
Journal Article,
Research Support, Non-U.S. Gov't
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