The Rhizosphere: Molecular Interactions Between Microorganisms and Roots

Chapter
Part of the Ecological Studies book series (ECOLSTUD, volume 220)

Abstract

The rhizosphere has a large impact on plant performance in several ways. A stand-specific, more or less high diversity of microorganisms not only supports the plant in the acquisition of water and nutrients, but also modulates its ability to cope with pathogens. This diversity, however, has to be maintained and thus causes a considerable drain of photoassimilates, which are then not available for shoot development. In this chapter, we try to explain why the considerable allocation of carbon to the root system is a “wise” decision by the plant. We thus focus on the function of root-associated bacteria and their relevance for plant growth and development of disease resistance, and deliver data on the molecular basis of the root–fungus symbiosis (mycorrhiza).

Keywords

Plant Growth Promote Rhizobacteria Arbuscular Mycorrhizae Disease Suppression Sulfate Uptake Systemic Acquire Resistance 
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.

Notes

Acknowledgements

As far as own research has been addressed, financial support by the Deutsche Forschungsgemeinschaft is gratefully acknowledged. We are indebted to Nina Lehr, Silvia Schrey, and Mika Tarkka for their input, and to Reinhard Agerer for critical reading and many helpful suggestions. GB 4-2 was isolated by K. Poralla (University of Tübingen).

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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Physiological Ecology of Plants, IMITUniversity of TübingenTübingenGermany
  2. 2.Department Microbe-Plant Interactions, German Research Center for Environmental HealthHelmholtz Zentrum MünchenNeuherbergGermany
  3. 3.BotanyUniversity of BremenBremenGermany

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