Reciprocal interactions between plants and fluorescent pseudomonads in relation to iron in the rhizosphere

SPE EA Section 15 : Engineering the rhizosphere: The "biased rhizosphere" concept Ouvrage en 2 volumes Résumé du livre : Molecular Microbial Ecology of the Rhizosphere covers current knowledge on the molecular basis of plant-microbe interactions in the rhizosphere. Also included in the book are both reviews and research-based chapters describing experimental materials and methods. Edited by a leader in the field, with contributions from authors around the world, Molecular Microbial Ecology of the Rhizosphere brings together the most up-to-date research in this expanding area, and will be a valuable resource for molecular microbiologists and plant soil scientists, as well as upper level students in microbiology, ecology, and agriculture.Iron is an essential element for living organisms. However, in most cultivated soils, iron availability is low despite its abundance due to soil physicochemical properties, including relative oxygen pressure and pH. Therefore, there is a strong competition for this element, required for plant and microorganism physiology, but showing a low availability. This competition relies on active strategies of iron uptake, which have been developed by plants and microorganisms. The efficacy of the corresponding strategies differs according to the organisms and results in interactions ranging from competition to mutualism, which impact plant growth and health. This chapter reviews strategies and methodologies, applied in literature, to monitor iron bioavailability, characterize the impact of this bioavailability on rhizosphere microbial communities, and assess the consequences on plant health and growth