Understanding Root-Microbe Interactions in Subsoil to Improve Soil Health.

Many recent studies have confirmed the beneficial role of root-microbe associations in soil and plant health. Microbial communities are in flux with the environment; as a result, root-microbe interactions shift in response to soil conditions. Some subsoil conditions like acidity can diminish many beneficial microbes like mycorrhizae fungi. Studies have shown that the phylogenetic and physiological adaptations are commonly observed in response to subsoil conditions. As a result, novel root-microbe interactions do occur most likely in subsoil, which are critical for improving root fitness and subsoil health. One of the goals of this study is to outline root-microbe interactions of cover crops in response to subsoil acidity. Other goal is to identify the root traits and rhizodeposits that promote beneficial microbes in subsoil. Results of this study will identify opportunities to improve root-microbe interactions through cover crops and sustainable management practices.