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  • 1
    Electronic Resource
    Electronic Resource
    Disturbed sugar metabolism in a fully habituated nonorganogenic callus of Beta vulgaris (L.) (1993)
    Springer
    Plant growth regulation 13 (1993), S. 257-261 
    Details
    ISSN: 1573-5087
    Keywords: Beta vulgaris ; glycolysis ; hexose monophosphate pathway ; sugarbeet ; sugar metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Habituated (H) nonorganogenic sugarbeet callus was found to exhibit a disturbed sugar metabolism. In contrast to cells from normal (N) callus, H cells accumulate glucose and fructose and show an abnormal high fructose/glucose ratio. Moreover, H cells which have decreased wall components, display lower glycolytic enzyme activities (hexose phosphate isomerase and phosphofructokinase) which is compensated by higher activities of the enzymes of the hexose monophosphate pathway (glucose-6-phosphate dehydrogenase and 6-phosphogluconate dehydrogenase). The disturbed sugar metabolism of the H callus is discussed in relation to a deficiency in H2O2 detoxifying systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00024846
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The influence of ethylene on proliferation and growth of rose shoot cultures (1992)
    Springer
    Plant cell, tissue and organ culture 28 (1992), S. 175-181 
    Details
    ISSN: 1573-5044
    Keywords: axillary budding ; gaseous atmosphere ; micropropagation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Ethylene accumulation in four different rose in vitro culture containers was evaluated. Multiplication rate was the highest, and axes most elongated, in the two containers where ethylene accumulation was limited. Pulse treatments of ethylene at various concentrations enhanced proliferation depending on concentration (5 ppm generally was the most favourable) and time of application, while reducing elongation of the shoots. An ethylene trap in the flask atmospheres of the cultures reduced rose shoot proliferation rate but increased elongation of the axes. Inhibitors of ethylene biosynthesis, aminoethoxyvinylglycine (AVG) and cobalt chloride (CoCl2), increased multiplication rate by providing a higher number of axes of a suitable size for subculture. The ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) had a beneficial effect on multiplication rate, although reducing longitudinal growth of the axes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00055514
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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