Mercury Enrichment Characteristics and Rhizosphere Bacterial Community of Ramie (Boehmeria Nivea L. Gaud.) in Mercury-Contaminated Soil

Phytoremediation is a promising technique for reducing mercury (Hg) pollution. Little known about the phytoremediation potential of ramie (Boehmeria nivea L. Gaud.) and response its rhizosphere soil microbiome to Hg contamination. In this study, we planted in three plots contaminated with different levels pollution evaluated accumulation translocation. We also analyzed abundance, composition, predominant taxa bacterial community. Results showed that average THg concentration decreased by 30.80%, 18.36%, 16.31% L, M, H, respectively. Ramie displayed strong tolerance good performance, especially low level Hg. After planting, SOM CEC increased while pH, Eh, content soil. Proteobacteria, Actinobacteriota, Gemmatimonadota, Latescibacterota, NB1-j were identified as Hg-tolerant at phylum level, their abundance highly Hg-contaminated Redundancy correlation analyses indicated community structure was significantly correlated content. This study provides better understanding capacity function thus lays theoretical foundation soils.