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  • 1975-1979  (4)
  • 1978  (3)
  • 1975  (1)
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  • 1975-1979  (4)
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  • 1
    Electronic Resource
    Electronic Resource
    Light-dependent net production of carbon monoxide by plants (1978)
    [s.l.] : Nature Publishing Group
    Nature 275 (1978), S. 740-741 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Fig. 1 Dependence of CO ( ) and CO2 () exchange on irradiance. Leaf temperature 28.3C; CO concentration in the gas stream supplied to the gas-exchange chamber 2.07 mm3 m-3, average CO concentration within the chamber during the experiment 4.78 mm3 m-3; CO2 concentration 250 cm3m-3; O2 concentration ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/275740a0
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Seasonal shift from C3 photosynthesis to Crassulacean Acid Metabolism in Mesembryanthemum crystallinum growing in its natural environment (1978)
    Springer
    Oecologia 34 (1978), S. 225-237 
    Details
    ISSN: 1432-1939
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Changes in δ13C value, diurnal malate content, water content and Na+, K+ and Cl- content of the annual Mesembryanthemum crystallinum (Aizoaceae) were followed in a natural population on a coastal cliff at the Mediterranean Sea shore close to Caesarea (Israel). Plants germinated in the middle of the rainy season in December 1976/January 1977. Diurnal malate fluctuations in the leaves were not detected until the end of March. Later on, at the start of the dry season, pronounced diurnal changes in malate developed. This was correlated with a progressive change in δ 13C value from about -26‰ to about -16‰ which is consistent with a change from normal C3 photosynthetic CO2 fixation to a predominantly nocturnal CO2 assimilation pattern involving Crassulacean Acid Metabolism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00345168
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Water relations of the epidermal bladder cells of the halophytic species Mesembryanthemum crystallinum: Direct measurements of hydrostatic pressure and hydraulic conductivity (1975)
    Springer
    Planta 126 (1975), S. 229-246 
    Details
    ISSN: 1432-2048
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Water exchange between the bladder cells of stems of the halophytic species Mesembryanthemum crystallinum and the subepidermal cortical cell layers was determined by direct cell turgor pressure measurements using a pressure probe. Treating the system bladder cell/subepidermal cortex as two homogeneous elastic compartments the hydraulic conductivity, L p, of the barrier separating both compartments was found to be L p=2·10-6 cm ·s-1·bar-1. As discussed, this value essentially reflects the hydraulic conductivity of the bladder cell membrane, which is unusually high compared with the values expected for higher plant cells. The L p-values did not show a dependence on cell turgor pressure over a large pressure range (0.1 to 6 bar) nor on the salinity of the bladder sap (osmolarity range: 500 to 1700 mOsmol). Furthermore, the stationary pressure-values obtained in the pressure-flow experiments point to unusually high permeabilities of the bladder membrane to electrolytes (KCl and NaCl). The unique transport properties of the bladder cell membrane for salt and water suggest a special physiological function of the bladders in the water economy of the plant. It is assumed that the bladders form a reservoir for salts and water in the plant which upon osmotic stress acts as a buffering system to protect the photosynthetic tissue from osmotic injury.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00388965
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Transport und Integration bei der Evolution der Pflanzen (1978)
    Weinheim : Wiley-Blackwell
    Biologie in unserer Zeit 8 (1978), S. 129-139 
    Details
    ISSN: 0045-205X
    Keywords: Life and Medical Sciences
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/biuz.19780080504
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    Paper (German National Licenses)
    Fulltext
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