The Rhizosphere

Rhizosphere as a site of biochemical interactions among soil, plant and microorganisms; type and amounts of compounds released by plants in the rhizosphere; the release of exudates as affected by the physiological status of plants (water, physical and nutritional stress); influence of root exudates on the rhizosphere microbial populations; direct vs. indirect effects of soil humic substances on plant growth and nutrition; mineralization of organic compounds in the rhizosphere; organic signals between plants and microorganisms; microbial siderophores; biochemistry of the association between mycorrhizas and plants; biochemistry of the interaction between rhizobia and the host plant; modelling processes in the rhizosphere; methodological approaches to the study of the rhizosphere.