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  • 1
    Electronic Resource
    Electronic Resource
    Characterization of Na+ exclusion mechanisms of salt-tolerant reed plants in comparison with salt-sensitive rice plants (1991)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 83 (1991), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Salt-tolerant reed plants (Phragmites communis Trinius) and salt-sensitive rice plants (Oryza sativa L. cv. Kinmaze) were grown in salinized nutrient solutions up to 50 mM NaCl, and growth, Na+ contents and kinetics of 22Na+ uptake and translocation were compared between the species to characterize the salt tolerance mechanisms operating in reed plants. When both plants were grown under the same salinity, Na+ contents of the shoots were lower in reed plants, although those of the roots were quite similar. The shoot base region of both species accumulated Na+ more than the leaf blades did. Sodium-22 uptake and pulse-chase experiments suggested that the lower Na+ transport rate from root to shoot could limit excessive Na+ accumulation in the reed shoot. There was a possibility that the apparently lower 22Na+ transport rate to the shoot of reed plants was due to net downward Na+ transport from shoot base to root.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1991.tb01298.x
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  • 2
    Electronic Resource
    Electronic Resource
    Potassium requirement of pyruvate kinase extracted from leaves of halophytes (1988)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 74 (1988), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Pyruvate kinase enzymes were partially purified from leaves of halophytes, Atriplex gmelini C. A. Mey., Chenopodium acuminatum Wild, and Spergularia salina J. et C. Presl., grown hydroponically in the presence of 250 mM NaCl in a greenhouse, to determine their Km values for potassium. The values were all ca 10−3M, as also reported for the glycophyte enzymes. However, the Km values were reduced by 60 to 70% by the addition of betaine to a concentration of 1 M.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1988.tb02035.x
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