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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yu, Xiumei Li, Yangxin Li, Yanmei Xu, Chaohua Cui, Yongliang Xiang, Quanju Gu, Yunfu Zhao, Ke Zhang, Xiaoping Penttinen, Petri Chen, Qiang |
| Copyright Year | 2016 |
| Abstract | Mine tailings contain high concentrations of metal contaminants and only little nutrients, making the tailings barren for decades after the mining has been terminated. Effective phytoremediation of mine tailings calls for deep-rooted, metal accumulating, and soil fertility increasing plants with tolerance against harsh environmental conditions. We assessed the potential of the biofuel leguminous tree Pongamia pinnata inoculated with plant growth promoting rhizobia to remediate iron–vanadium–titanium oxide (V–Ti magnetite) mine tailing soil by pot experiment and in situ remediation test. A metal tolerant rhizobia strain PZHK1 was isolated from the tailing soil and identified as Bradyrhizobium liaoningense by phylogenetic analysis. Inoculation with PZHK1 increased the growth of P. pinnata both in V–Ti magnetite mine tailings and in Ni-contaminated soil. Furthermore, inoculation increased the metal accumulation capacity and superoxide dismutase activity of P. pinnata. The concentrations of Ni accumulated by inoculated plants were higher than the hyperaccumulator threshold. Inoculated P. pinnata accumulated high concentration of Fe, far exceeding the upper limit (1000 mg kg−1) of Fe in plant tissue. In summary, P. pinnata–B. liaoningense PZHK1 symbiosis showed potential to be applied as an effective phytoremediation technology for mine tailings and to produce biofuel feedstock on the marginal land. |
| Starting Page | 1739 |
| Ending Page | 1751 |
| Page Count | 13 |
| File Format | |
| ISSN | 01757598 |
| Journal | Applied Microbiology and Biotechnology |
| Volume Number | 101 |
| Issue Number | 4 |
| e-ISSN | 14320614 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2016-11-17 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | Subscribed |
| Subject Keyword | Phytoremediation Pongamia pinnata Bradyrhizobium Iron–vanadium–titanium oxide mine tailings Nickel soil Microbiology Microbial Genetics and Genomics Biotechnology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Medicine Applied Microbiology and Biotechnology Biotechnology |
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