PhD in Biology - Microbial ecology of the rhizosphere

The microbial control of rhizosphere biogeochemistry

Soils are a globally important store of terrestrial carbon (C), with soil microorganisms playing a decisive role in regulating soil C storage through the decomposition of plant residues and soil organic matter. lnputs of plant-derived C in the rhizosphere create hotspots of microbial activity and dynamic biogeochemistry. The microbial allocation of C to growth relative to C loss to the atmosphere via respiration (i.e. the microbial C use efficiency; CUE) will be important in determining the future C sequestration potential of soils. ln this project, we will consider how aboveground-belowground plant-soil interactions determine soil biogeochemistry. Specifically, we shall examine how differences in resource quality and the availability of limiting nutrients influence microbial growth and respiration in the rhizosphere, and the consequences for microbial CUE.

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GSBILund University