Soil-Root-Microbe Interactions in the Rhizosphere - A Key to Understanding and Predicting Nutrient Bioavailability to Plants
Résumé
As stressed in the Millennium Ecosystem Assessment, over the last 50 years, human
beings have modified the ecosystems to an unpreceded point in humankind history, in order
to meet the increasing world demand in food, drinking water, wood, fibers and energy
(Tilman 1999). Such changes much contributed to improving humankind well-being, but this
was achieved at the expense of a degradation of numerous ecosystem services and increasing
poverty of the poorest populations. Prediction models forecast further degradation of
ecosystem services in the coming 50 years, a fortiori if agroecosystem management strategies
are unchanged (Tilman et al. 2001 et 2002). In this context, Millennium Development Goals
will hardly be achieved, and especially the very first of these: to eradicate hunger worldwide
(Priority 1). The scientific challenge is considerable: how to feed the world in a context of
limited changes of land use, i.e. a limited increase in productive arable land surface area?
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