Changes in rhizosphere bacterial communities during remediation of heavy metal-accumulating plants around the Xikuangshan mine in southern China
| Autor: | Xiawei Peng, Dongchu Guo, Fangping Tong, Shuyu Lu, Yongjiao Ma, Xiaohong Nie, Zhouzhou Fan |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Antimony
0301 basic medicine China Environmental remediation Bulk soil lcsh:Medicine Article Mining Arsenic Soil 03 medical and health sciences 0302 clinical medicine Metals Heavy Soil pH Soil Pollutants lcsh:Science Environmental Restoration and Remediation Soil Microbiology Rhizosphere Multidisciplinary Bacteria Chemistry Microbiota lcsh:R Soil chemistry Phytoremediation Biodegradation Environmental 030104 developmental biology Microbial population biology Environmental chemistry lcsh:Q Soil microbiology 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports, Vol 9, Iss 1, Pp 1-11 (2019) Scientific Reports |
| ISSN: | 2045-2322 |
| DOI: | 10.1038/s41598-018-38360-2 |
| Popis: | Mining and smelting activities are the major sources of antimony (Sb) contamination. The soil around Xikuangshan (XKS), one of the largest Sb mines in the world, has been contaminated with high concentrations of Sb and other associated metals, and has attracted extensive scholarly attention. Phytoremediation is considered a promising method for removing heavy metals, and the diversity and structure of rhizosphere microorganisms may change during the phytoremediation process. The rhizosphere microbiome is involved in soil energy transfer, nutrient cycling, and resistance and detoxification of metal elements. Thus, changes in this microbiome are worthy of investigation using high-throughput sequencing techniques. Our study in Changlongjie and Lianmeng around XKS revealed that microbial diversity indices in the rhizospheres of Broussonetia papyrifera and Ligustrum lucidum were significantly higher than in bulk soil, indicating that plants affect microbial communities. Additionally, most of the bacteria that were enriched in the rhizosphere belonged to the Proteobacteria, Acidobacteria, Actinobacteria, and Bacteroidetes. In Changlongjie and Lianmeng, the diversity and abundance of the microbial community in the B. papyrifera rhizosphere were higher than in L. lucidum. In parallel, the soil pH of the B. papyrifera rhizosphere increased significantly in acidic soil and decreased significantly in near-neutral soil. Redundancy analyses indicated that pH was likely the main factor affecting the overall bacterial community compositions, followed by moisture content, Sb, arsenic (As), and chromium (Cr). |
| Databáze: | OpenAIRE |
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