Planta

, Volume 125, Issue 3, pp 217–225 | Cite as

Glucose metabolism of dormant and heat-activated spores of Phycomyces blakesleeanus burgeff

  • A. J. Van Laere
  • A. R. Carlier
Article
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Summary

The metabolism of [14C]glucose has been studied in Phycomyces spores during dormancy, activation, and the initial stages of germination. Dormant spores are able to take up and metabolize exogenous glucose into different products; the major part of it goes to trehalose synthesis (up to 60% when the external glucose concentration exceeds 10-3 M). During activation itself (i.e. a prolonged treatment at 50°) there is a general increase of glucose uptake and metabolism, without major changes in the relative rates of 14C-label distribution in the different fractions (as compared to the metabolism of dormant spores), except for a drop in material insoluble in 80% ethanol and a still higher percentage (73%) going to trehalose synthesis. In the early hours of germination we find an enhancement of the uptake and metabolism of glucose. Trehalose synthesis is practically switched off within 2 h whereas the major part of glucose (65%) is metabolized to CO2 and ethanol-insoluble proteinaceous material.

Keywords

Glucose Glucose Concentration Glucose Metabolism Glucose Uptake Major Part 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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References

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Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • A. J. Van Laere
    • 1
  • A. R. Carlier
    • 1
  1. 1.Laboratorium voor PlantenbiochemieKatholieke Universiteit LeuvenLeuvenBelgium

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