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  • 1
    Electronic Resource
    Electronic Resource
    Nucleotide pools in suspension-cultured cells of Datura innoxia (1985)
    Springer
    Planta 166 (1985), S. 439-445 
    Details
    ISSN: 1432-2048
    Keywords: Cell culture (nucleotides) ; Datura ; Energy charge ; Nucleoside diphosphate sugar ; Nucleotide pool
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The concentrations of 17 nucleotides and three nucleosides have been determined in a batch suspension culture of Datura innoxia using a new procedure for extraction, purification and high-performance liquid chromatography separation of these compounds. The nucleotide pools change appreciably in the different phases of growth. These changes indicate the preparation for and initiation of cell proliferation, and reflect metabolic events during cell division, cell elongation and starvation. The main components of the nucleotide pool are uracil nucleotides, with uridine 5′-diphosphate sugars as the predominant fraction, and the adenine nucleotides. Although their concentrations vary by a factor of more than 6 the ratio of the uracil to adenine nucleotides is kept fairly constant during growth. The energy charge is maintained at a rather high value. The correlation of these events with nutrient uptake and macromolecular synthesis by the batch culture is presented in the following paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391267
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Nucleotide pools in suspension-cultured cells of Datura innoxia (1985)
    Springer
    Planta 166 (1985), S. 446-451 
    Details
    ISSN: 1432-2048
    Keywords: Datura ; Macromolecular synthesis ; Nucleotide pool ; Nutrient uptake ; Suspension culture
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A general picture of the metabolic events which govern to growth behaviour of a batch culture of suspended dedifferentiated cells of Datura innoxia is obtained by following both the uptake and accumulation of the medium phosphate and sucrose by the cells, and the synthesis of RNA, protein and starch. The results are compared with the changes in the nucleotide pools described in the preceding paper. The sequence of formation and the regulatory dependencies of cellular pools of phosphate, sucrose, nucleotides and RNA in the production of proteins, starch and cell mass, and in the control of proliferation and cell growth are discussed. Furthermore, the importance of the maintenance pools for metabolic survival during starvation is emphasized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391268
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    Paper (German National Licenses)
    Fulltext
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