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Restoration with pioneer plants changes soil properties and remodels the diversity and structure of bacterial communities in rhizosphere and bulk soil of copper mine tailings in Jiangxi Province, China.
Environ Sci Pollut Res Int. 2018 Aug; 25(22):22106-22119.ES

Abstract

To unravel the ecological function played by pioneer plants in the practical restoration of mine tailings, it is vital to explore changes of soil characteristics and microbial communities in rhizosphere and bulk soil following the adaptation and survival of plants. In the present study, the diversity and structure of rhizospheric bacterial communities of three pioneer plants in copper mine tailings were investigated by Illumina MiSeq sequencing, and the effects of pioneer plants on soil properties were also evaluated. Significant soil improvement was detected in rhizospheric samples, and Alnus cremastogyne showed higher total organic matter, total nitrogen, and available phosphorus than two other herbaceous plants. Microbial diversity indices in rhizosphere and bulk soil of reclaimed tailings were significantly higher than bare tailings, even the soil properties of bulk soil in reclaimed tailings were not significantly different from those of bare tailings. A detailed taxonomic composition analysis demonstrated that Alphaproteobacteria and Deltaproteobacteria, Chloroflexi, Acidobacteria, and Gemmatimonadetes showed significantly higher relative abundance in rhizosphere and bulk soil. In contrast, Gammaproteobacteria and Firmicutes were abundant in bare tailings, in which Bacillus, Pseudomonas, and Lactococcus made up the majority of the bacterial community (63.04%). Many species within known heavy metal resistance and nutrient regulatory microorganism were identified in reclaimed tailings, and were more abundant among rhizospheric microbes. Hierarchical clustering and principal coordinate analysis (PCoA) analysis demonstrated that the bacterial profiles in the rhizosphere clustered strictly together according to plant types, and were distinguishable from bulk soil. However, we also identified a large shared OTUs that occurred repeatedly and was unaffected by highly diverse soil properties in rhizosphere and bulk samples. Redundancy analysis indicated that water content and Cu and As concentrations were the main environmental regulators of microbial composition. These results suggest that the interactive effect of pioneer plants and harsh soil environmental conditions remodel the specific bacterial communities in rhizosphere and bulk soil in mine tailings. And A. cremastogyne might be approximate candidate for phytoremediation of mine tailings for better soil amelioration effect and relative higher diversity of bacterial community in rhizosphere.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Sun X
Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Biology and Resources, Jiangxi Academy of Sciences, Nanchang, 330096, People's Republic of China. xiaoyan_sun05@163.com.
Zhou Y
Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Biology and Resources, Jiangxi Academy of Sciences, Nanchang, 330096, People's Republic of China.
Tan Y
Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Biology and Resources, Jiangxi Academy of Sciences, Nanchang, 330096, People's Republic of China.
Wu Z
Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Biology and Resources, Jiangxi Academy of Sciences, Nanchang, 330096, People's Republic of China.
Lu P
Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Biology and Resources, Jiangxi Academy of Sciences, Nanchang, 330096, People's Republic of China.
Zhang G
Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Biology and Resources, Jiangxi Academy of Sciences, Nanchang, 330096, People's Republic of China.
Yu F
Jiangxi Engineering and Technology Research Center for Ecological Remediation of Heavy Metal Pollution, Institute of Biology and Resources, Jiangxi Academy of Sciences, Nanchang, 330096, People's Republic of China.

MeSH

BacteriaBiodegradation, EnvironmentalChinaCopperEnvironmental PollutionMetals, HeavyMicrobiotaMiningNitrogenPhosphorusPlantsRhizosphereSoilSoil Microbiology

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29802615

Citation

Sun, Xiaoyan, et al. "Restoration With Pioneer Plants Changes Soil Properties and Remodels the Diversity and Structure of Bacterial Communities in Rhizosphere and Bulk Soil of Copper Mine Tailings in Jiangxi Province, China." Environmental Science and Pollution Research International, vol. 25, no. 22, 2018, pp. 22106-22119.
Sun X, Zhou Y, Tan Y, et al. Restoration with pioneer plants changes soil properties and remodels the diversity and structure of bacterial communities in rhizosphere and bulk soil of copper mine tailings in Jiangxi Province, China. Environ Sci Pollut Res Int. 2018;25(22):22106-22119.
Sun, X., Zhou, Y., Tan, Y., Wu, Z., Lu, P., Zhang, G., & Yu, F. (2018). Restoration with pioneer plants changes soil properties and remodels the diversity and structure of bacterial communities in rhizosphere and bulk soil of copper mine tailings in Jiangxi Province, China. Environmental Science and Pollution Research International, 25(22), 22106-22119. https://doi.org/10.1007/s11356-018-2244-3
Sun X, et al. Restoration With Pioneer Plants Changes Soil Properties and Remodels the Diversity and Structure of Bacterial Communities in Rhizosphere and Bulk Soil of Copper Mine Tailings in Jiangxi Province, China. Environ Sci Pollut Res Int. 2018;25(22):22106-22119. PubMed PMID: 29802615.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Restoration with pioneer plants changes soil properties and remodels the diversity and structure of bacterial communities in rhizosphere and bulk soil of copper mine tailings in Jiangxi Province, China. AU - Sun,Xiaoyan, AU - Zhou,Yanling, AU - Tan,Yinjing, AU - Wu,Zhaoxiang, AU - Lu,Ping, AU - Zhang,Guohua, AU - Yu,Faxin, Y1 - 2018/05/25/ PY - 2018/01/12/received PY - 2018/05/06/accepted PY - 2018/5/29/pubmed PY - 2019/1/1/medline PY - 2018/5/27/entrez KW - Circumneutral mine tailings KW - MiSeq sequencing KW - Pioneer plant KW - Restoration KW - Rhizosphere bacterial community SP - 22106 EP - 22119 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 22 N2 - To unravel the ecological function played by pioneer plants in the practical restoration of mine tailings, it is vital to explore changes of soil characteristics and microbial communities in rhizosphere and bulk soil following the adaptation and survival of plants. In the present study, the diversity and structure of rhizospheric bacterial communities of three pioneer plants in copper mine tailings were investigated by Illumina MiSeq sequencing, and the effects of pioneer plants on soil properties were also evaluated. Significant soil improvement was detected in rhizospheric samples, and Alnus cremastogyne showed higher total organic matter, total nitrogen, and available phosphorus than two other herbaceous plants. Microbial diversity indices in rhizosphere and bulk soil of reclaimed tailings were significantly higher than bare tailings, even the soil properties of bulk soil in reclaimed tailings were not significantly different from those of bare tailings. A detailed taxonomic composition analysis demonstrated that Alphaproteobacteria and Deltaproteobacteria, Chloroflexi, Acidobacteria, and Gemmatimonadetes showed significantly higher relative abundance in rhizosphere and bulk soil. In contrast, Gammaproteobacteria and Firmicutes were abundant in bare tailings, in which Bacillus, Pseudomonas, and Lactococcus made up the majority of the bacterial community (63.04%). Many species within known heavy metal resistance and nutrient regulatory microorganism were identified in reclaimed tailings, and were more abundant among rhizospheric microbes. Hierarchical clustering and principal coordinate analysis (PCoA) analysis demonstrated that the bacterial profiles in the rhizosphere clustered strictly together according to plant types, and were distinguishable from bulk soil. However, we also identified a large shared OTUs that occurred repeatedly and was unaffected by highly diverse soil properties in rhizosphere and bulk samples. Redundancy analysis indicated that water content and Cu and As concentrations were the main environmental regulators of microbial composition. These results suggest that the interactive effect of pioneer plants and harsh soil environmental conditions remodel the specific bacterial communities in rhizosphere and bulk soil in mine tailings. And A. cremastogyne might be approximate candidate for phytoremediation of mine tailings for better soil amelioration effect and relative higher diversity of bacterial community in rhizosphere. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/29802615/Restoration_with_pioneer_plants_changes_soil_properties_and_remodels_the_diversity_and_structure_of_bacterial_communities_in_rhizosphere_and_bulk_soil_of_copper_mine_tailings_in_Jiangxi_Province_China_ DB - PRIME DP - Unbound Medicine ER -