Imaging and Analytical Approaches for Characterization of Soil Mineral Weathering (original) (raw)

Soil mineral weathering plays a crucial role in nutrient availability for terrestrial ecosystems, particularly through the activity of soil microbial communities in the rhizosphere. This study investigates the micro-scale interactions within the rhizosphere utilizing a mesocosm setup with Pinus resinosa seedlings and a specific mineral mix, emphasizing the role of microbial biofilms in mineral weathering. Employing advanced imaging and analytical techniques, findings reveal changes in mineral crystallinity and the importance of extracellular polymeric substances (EPS) production by microbes to enhance nutrient mobilization. Notably, no secondary mineral formation was observed after nine months, although increased amorphous material was detected.