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  • 1
    Electronic Resource
    Electronic Resource
    The influence of exogenous proline on the stomatal resistance in Vicia faba (1981)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 52 (1981), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Both the upper and lower stomata of Vicia faba responded to different concentrations of proline supplied either to the ‘detached’ leaves or sprayed to ‘intact’ leaves. The stomatal resistance of abaxial surfaces was increased more than that of the adaxial surfaces. A 1-h treatment with 5 mM proline had greater influence than a prolonged treatment. The ‘young’ leaves responded more than the ‘mature’ ones to the exogenous proline. A relationship could be demonstrated between endogenous proline, which increased markedly due to exogenous supply, and stomatal resistance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1981.tb08508.x
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Water stress and root formation in pea cuttings (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 48 (1980), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Eleven day old pea plants (Pisum sativum L. cv. Alaska), grown at 16 W m−2 or 38 W m−2 were stressed with different concentrations of polyethyleneglycol (PEG): –3.0 (mild), –6.4 (moderate) or –13.9 bar (severe) for 2, 4 or 6 h. The leaf osmotic potential, ψπ, and the endogenous abscisic acid (ABA) level and ethylene production were determined at the end of the stress treatment.The ψπ decreased with stress treatments. The reduction was greater at 38 W m−2 than at 16 W m−2; severely-stressed plants had less ABA content than those under moderate or mild stress. Ethylene production was higher with the 2 h stress treatment than the non-stressed only at 38 W m−2. Prolongation of stress to 6 h decreased the ABA level and also ethylene production under both levels of irradiance.The relationship between the changes in ABA and ethylene and the adventitious root formation in pea cuttings is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1980.tb03236.x
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Water stress and root formation in pea cuttings (1980)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 48 (1980), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The stock plants of pea (Pistum sativium L. cv. Alaska) grown for 11 days at 16 W m−2 38 W m−2 were subjected to different degrees of moisture stress, simulated with polyethyleneglycol (PEG, 6000) for different periods. The cuttings were made at the end of stress treatments, planted in perlite and allowed to root in a mist propagation chamber.The number of adventitious roots formed on the cuttings from non-stressed plants was significantly higher under low (16 W m−2) than under high (38 W m−2) irradiance. However, under the influence of short duration stress the number of roots increased significantly under high but not under low irradiance. There was significantly poor rooting after prolonged stress under both irradiances.The leaf osmotic potential ψπ showed a greater reduction with increasing degree and duration of stress at 38 W m−2 than at 16 W m−2. The differential rooting behaviour as a result of stress levels and irradiances is discussed in the light of available literature on adventitious root formation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1980.tb03234.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Does abscisic acid influence proline accumulation in stressed leaves? (1978)
    Springer
    Planta 143 (1978), S. 85-88 
    Details
    ISSN: 1432-2048
    Keywords: Abscisci acid ; Hordeum ; Pisum ; Polyethylene glycol ; Proline ; Stress (water) ; Water stress
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Root treatments of barley (Hordeum distichum L.) plants with 10-7 to 10-4 M abscisic acid (ABA) caused an increase in proline content, especially at higher concentrations, within 2–3 h. Even 3 h after the removal of ABA from the medium the plants continued to accumulate proline. The higher the concentration of the ABA, the higher was the proline level at 6 h. When the highest ABA concentration, 10-4 M, was tested with polyethylene glycol (PEG) (-5.0 bars) in the medium, the ABA treatment resulted in a higher proline content than in control plants. The treatments “PEG alone” and “PEG + ABA” resulted in heavy accumulation of proline, especially, 3 h after releasing the plants from the stress. The proline content in PEG+ABA-treated plants was always higher than plants treated with PGE or ABA alone. In peas (Pisum sativum L. cv Alaska) the same trend occurred although to a lesser degree. These findings indicate an influence of ABA on proline accumulation in water-stressed plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00389056
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    Paper (German National Licenses)
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