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| Study on Lolium Perenne - Glomus Intraradice Combined Remediation of Uranium-contaminated Soils |
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Received:October 15, 2020
Revised:October 25, 2020
Accepted:October 27, 2020
Published Online:February 22, 2021
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| DOI：doi：10.3969/j.issn.1007-7545.2021.03.011 |
| KeyWord:uranium; Glomus intraradice (Gi); Lolium perenne; phytoremediation |
| Author | Institution |
| GUO Chenran |
东华理工大学水资源与环境工程学院 |
| CHEN Jingying |
东华理工大学水资源与环境工程学院 |
| YAO Yihui |
江西省南昌市青山湖区东华理工大学 |
| NIU Tianyang |
东华理工大学水资源与环境工程学院 |
| LU Bin-yu |
东华理工大学水资源与环境工程学院 |
| ZHANG Ze-yu |
东华理工大学水资源与环境工程学院 |
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| Abstract: |
| To effectively address repair of soil pollution, combined plant and microbial remediation technology has attracted much attention because of its high efficiency and environmental protection. Inoculation of Glomus intraradice(Gi) in roots of Lolium perenne was used to repair uranium contaminated soil because of its symbiotic relationship with most plants. Gi inoculated Lolium perenne roots were compared with the non-AMF at different concentrations (18.74, 52.15, 112.40, 202.40 mg/kg) and remediation simulation of uranium-contaminated soil was carried out to explore intensified process of Gi to remediate uranium-contaminated soil. The results show that all mycorrhizal infection rate of inoculated with Gi is 50% above and biomass rises significantly. Biomass of the upper part of Lolium perenne and roots in 202.40 mg/kg uranium treatment group rises by 86%% and 136% respectively. Uranium content, bioconcentration coefficient, and absorbed N, P, K element content are all significantly raised, but transport coefficients are all lower than those of non-AMF. It shows that Gi enhances plant roots to fix uranium accumulation, and can inhibit uranium transfer from roots to stems and leaves. In summary, Gi can raise resistance of host plants to uranium metal toxicity, strengthen fixation process of uranium by plant roots in uranium-contaminated soil, and can effectively improve uranium accumulation ability of Lolium perenne. |
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