Three-dimensional Microorganization of the Soil–Root–Microbe System

• Debbie S. Feeney ^[1] ; John W. Crawford ^[1] ; Tim Daniell ^[3] ; Paul D. Hallett ^[3] ; Naoise Nunan ^[4] ; Karl Ritz ^[5] ; Mark Rivers ^[2] ; Iain M. Young ^[1]
  1. [1] Abertay University

     Abertay University

     Reino Unido

     
  2. [2] University of Chicago

     University of Chicago

     City of Chicago, Estados Unidos

     
  3. [3] Scottish Crop Research Institute, Invergowrie, UK
  4. [4] CNRS, Laboratoire de Biogéochimie des Milieux Continentaux, Bâtiment EGER, Thiverval-Grignon, France
  5. [5] National Soil Resources Institute, Cranfield University, Bedfordshire,

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• Localización: Microbial ecology, ISSN-e 1432-184X, ISSN 0095-3628, Vol. 52, Nº. 1, 2006, págs. 151-158
• Idioma: inglés
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• Resumen

  • Soils contain the greatest reservoir of biodiversity on Earth, and the functionality of the soil ecosystem sustains the rest of the terrestrial biosphere. This functionality results from complex interactions between biological and physical processes that are strongly modulated by the soil physical structure. Using a novel combination of biochemical and biophysical indicators and synchrotron microtomography, we have discovered that soil microbes and plant roots microengineer their habitats by changing the porosity and clustering properties (i.e., spatial correlation) of the soil pores. Our results indicate that biota act to significantly alter their habitat toward a more porous, ordered, and aggregated structure that has important consequences for functional properties, including transport processes. These observations support the hypothesis that the soil–plant–microbe complex is self-organized.