Rhizosphere Microbial Communities and Geochemical Constraining Mechanism of Antimony Mine Waste-Adapted Plants in Southwestern China
Antimony (Sb) and arsenic (As) are two hazardous metalloid elements, and the biogeochemical cycle of Sb and As can be better understood by studying plant rhizosphere microorganisms associated with Sb mine waste. In the current study, samples of three types of mine waste—Sb mine tailing, waste rocks,...
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MDPI AG
2022-07-01
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| Series: | Microorganisms |
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| author | Xiaofeng Xie Shangyi Gu Likai Hao Tianyi Zhang Zidong Guo |
| author_facet | Xiaofeng Xie Shangyi Gu Likai Hao Tianyi Zhang Zidong Guo |
| author_sort | Xiaofeng Xie |
| collection | DOAJ |
| description | Antimony (Sb) and arsenic (As) are two hazardous metalloid elements, and the biogeochemical cycle of Sb and As can be better understood by studying plant rhizosphere microorganisms associated with Sb mine waste. In the current study, samples of three types of mine waste—Sb mine tailing, waste rocks, and smelting slag—and associated rhizosphere microorganisms of adapted plants were collected from Qinglong Sb mine, southwest China. 16S rRNA was sequenced and used to study the composition of the mine waste microbial community. The most abundant phylum in all samples was <i>Proteobacteria</i>, followed by <i>Bacteroidota</i>, <i>Acidobacteriota</i>, and <i>Actinobacteriota</i>. The community composition varied among different mine waste types. <i>Gammaproteobacteria</i> was the most abundant microorganism in tailings, <i>Actinobacteria</i> was mainly distributed in waste rock, and <i>Saccharimonadia</i>, <i>Acidobacteriae</i>, and <i>Ktedonobacteria</i> were mainly present in slag. At the family level, the vast majority of <i>Hydrogenophilaceae</i> were found in tailings, <i>Ktedonobacteraceae</i>, <i>Chthoniobacteraceae</i>, and <i>Acidobacteriaceae</i> (Subgroup 1) were mostly found in slag, and <i>Pseudomonadaceae</i> and <i>Micrococcaceae</i> were mainly found in waste rock. <i>Actinobacteriota</i> and <i>Arthrobacter</i> are important taxa for reducing heavy metal(loid) mobility, vegetation restoration, and self-sustaining ecosystem construction on antimony mine waste. The high concentrations of Sb and As reduce microbial diversity. |
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| issn | 2076-2607 |
| language | English |
| last_indexed | 2024-03-09T04:04:34Z |
| publishDate | 2022-07-01 |
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| series | Microorganisms |
| spelling | doaj.art-6784fe1d4e1a4b10ba18202abce7b8e72023-12-03T14:08:52ZengMDPI AGMicroorganisms2076-26072022-07-01108150710.3390/microorganisms10081507Rhizosphere Microbial Communities and Geochemical Constraining Mechanism of Antimony Mine Waste-Adapted Plants in Southwestern ChinaXiaofeng Xie0Shangyi Gu1Likai Hao2Tianyi Zhang3Zidong Guo4College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, ChinaCollege of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, ChinaState Key Laboratory of Environmental Geochemistry, Chinese Academy of Sciences, Guiyang 550002, ChinaCollege of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, ChinaCollege of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, ChinaAntimony (Sb) and arsenic (As) are two hazardous metalloid elements, and the biogeochemical cycle of Sb and As can be better understood by studying plant rhizosphere microorganisms associated with Sb mine waste. In the current study, samples of three types of mine waste—Sb mine tailing, waste rocks, and smelting slag—and associated rhizosphere microorganisms of adapted plants were collected from Qinglong Sb mine, southwest China. 16S rRNA was sequenced and used to study the composition of the mine waste microbial community. The most abundant phylum in all samples was <i>Proteobacteria</i>, followed by <i>Bacteroidota</i>, <i>Acidobacteriota</i>, and <i>Actinobacteriota</i>. The community composition varied among different mine waste types. <i>Gammaproteobacteria</i> was the most abundant microorganism in tailings, <i>Actinobacteria</i> was mainly distributed in waste rock, and <i>Saccharimonadia</i>, <i>Acidobacteriae</i>, and <i>Ktedonobacteria</i> were mainly present in slag. At the family level, the vast majority of <i>Hydrogenophilaceae</i> were found in tailings, <i>Ktedonobacteraceae</i>, <i>Chthoniobacteraceae</i>, and <i>Acidobacteriaceae</i> (Subgroup 1) were mostly found in slag, and <i>Pseudomonadaceae</i> and <i>Micrococcaceae</i> were mainly found in waste rock. <i>Actinobacteriota</i> and <i>Arthrobacter</i> are important taxa for reducing heavy metal(loid) mobility, vegetation restoration, and self-sustaining ecosystem construction on antimony mine waste. The high concentrations of Sb and As reduce microbial diversity.https://www.mdpi.com/2076-2607/10/8/1507antimonyQinglongrhizosphere microorganismsslagtailingswaste rock |
| spellingShingle | Xiaofeng Xie Shangyi Gu Likai Hao Tianyi Zhang Zidong Guo Rhizosphere Microbial Communities and Geochemical Constraining Mechanism of Antimony Mine Waste-Adapted Plants in Southwestern China Microorganisms antimony Qinglong rhizosphere microorganisms slag tailings waste rock |
| title | Rhizosphere Microbial Communities and Geochemical Constraining Mechanism of Antimony Mine Waste-Adapted Plants in Southwestern China |
| title_full | Rhizosphere Microbial Communities and Geochemical Constraining Mechanism of Antimony Mine Waste-Adapted Plants in Southwestern China |
| title_fullStr | Rhizosphere Microbial Communities and Geochemical Constraining Mechanism of Antimony Mine Waste-Adapted Plants in Southwestern China |
| title_full_unstemmed | Rhizosphere Microbial Communities and Geochemical Constraining Mechanism of Antimony Mine Waste-Adapted Plants in Southwestern China |
| title_short | Rhizosphere Microbial Communities and Geochemical Constraining Mechanism of Antimony Mine Waste-Adapted Plants in Southwestern China |
| title_sort | rhizosphere microbial communities and geochemical constraining mechanism of antimony mine waste adapted plants in southwestern china |
| topic | antimony Qinglong rhizosphere microorganisms slag tailings waste rock |
| url | https://www.mdpi.com/2076-2607/10/8/1507 |
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