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Pflanze-Bakterien-Interaktionen bei Phosphatmangel in Sterilkultur

  • Esther Hoberg
  • Petra Marschner
  • Reinhard Lieberei
Chapter

Abstract

We developed a plant culture system to investigate the effect of microorganisms with or without dicotyledonous plants on various parameter of the rhizosphere soil solution under phosphate deficiency. This plant culture system allows a detailed study of the interactions between microorganisms and plant roots. Compared to dual culture alkaline phosphatase-activity of Pseudomonas fluorescens Pf-5 was lower in the absence of plants even though the population density was similar. This could be due to the fact that Pf-5 without plants appeared to be starved. The composition of low-molecular organic acids of the rhizosphere soil solution in the absence of plants differed from that with plants. It is concluded that in the absence of plants phosphate-solubilizing capacity of Pf-5 as well as its contribution to phosphate uptake of the plants may be low.

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Literaturverzeichnis

  1. DE Frewns, J. R.; Banerjee, M. R.; Germida, J. J., 1997: Phosphate-solubilizing rhizobacteria enhance the growth and yield but not phosphorus uptake of canola (Brassica napus L.). Biology and Fertility of Soils 24: 358–364.CrossRefGoogle Scholar
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Copyright information

© B. G. Teubner GmbH, Stuttgart/Leipzig/Wiesbaden 2001

Authors and Affiliations

  • Esther Hoberg
    • 1
  • Petra Marschner
    • 1
  • Reinhard Lieberei
    • 1
  1. 1.Institut für Angewandte Botanik derUniversität HamburgHamburgGermany

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