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  • 1980-1984  (2)
  • 42.60  (1)
  • Gibberellin and protoplast swelling  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Regulation of swelling of etiolated-wheat-leaf protoplasts by phytochrome and gibberellic acid (1983)
    Springer
    Planta 158 (1983), S. 416-421 
    Details
    ISSN: 1432-2048
    Keywords: Gibberellin and protoplast swelling ; Phytochrome ; Protoplast (swelling) ; Triticum (protoplast swelling)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The effect of light on the size of intact protoplasts isolated from the primary leaves of etiolated Triticum aestivum was studied. A 2-min red-light irradiation in the presence of 1 mM KCl was sufficient to cause a swelling of protoplasts compared with those maintained in darkness. The effect was photoreversible by far-red light over two light cycles, indicating the involvement of phytochrome. At 4°C, escape from reversibility occurred between 2 and 5 min after the exposure to red light. In exposure-response experiments, 20 s red light at 27 μmol m-2s-1 was sufficient to saturate the response. Exogenous gibberellic acid added in darkness in the presence of KCl also induced protoplast swelling. Gibberellins may act as an intermediate in the phytochrome-induced swelling of protoplasts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00397734
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Dye-laser frequency stabilization using optical resonators (1984)
    Springer
    Applied physics 33 (1984), S. 179-185 
    Details
    ISSN: 1432-0649
    Keywords: 06 ; 07.60 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We describe a study, performed using heterodyne techniques, of the frequency fluctuations of two completely independent ring dye lasers locked to independent reference cavities. Single laser linewidths of less than 750 Hz were achieved, the principal limitation being residual vibrations from the noisy laboratory environment. With future design and environmental improvements, ultranarrow linewidths are expected thus providing a useful tool for a great variety of high precision experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688526
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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