Proteomic Profiling and Rhizosphere-Associated Microbial Communities Reveal Adaptive Mechanisms of Kunth in Eastern Amazon's Rehabilitating Minelands.

Kunth is native to ferruginous rocky outcrops (known as ) in the eastern Amazon. Native are considered hotspots of biological diversity and have one of the largest iron ore deposits in the world. There, can grow in post-mining areas where molecular mechanisms and rhizospheric interactions with soil microorganisms are expected to contribute to their establishment in rehabilitating minelands (RM). In this study, we compare the root proteomic profile and rhizosphere-associated bacterial and fungal communities of growing in and RM to characterize the main mechanisms that allow the growth and establishment in post-mining areas. The results showed that proteins involved in response to oxidative stress, drought, excess of iron, and phosphorus deficiency showed higher levels in and, therefore, helped explain its high establishment rates in RM. Rhizospheric selectivity of microorganisms was more evident in The microbial community structure was mostly different between the two habitats, denoting that despite having its preferences, can associate with beneficial soil microorganisms without specificity. Therefore, its good performance in RM can also be improved or attributed to its ability to cope with beneficial soil-borne microorganisms. Native plants with such adaptations must be used to enhance the rehabilitation process.