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Liu WS, van der Ent A, Erskine PD, Morel JL, Echevarria G, Spiers KM, Montargès-Pelletier E, Qiu RL, Tang YT. Spatially Resolved Localization of Lanthanum and Cerium in the Rare Earth Element Hyperaccumulator Fern Dicranopteris linearis from China. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:2287-2294. [PMID: 31951400 DOI: 10.1021/acs.est.9b05728] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The fern Dicranopteris linearis (Gleicheniaceae) from China is a hyperaccumulator of rare earth element (REE), but little is known about the ecophysiology of REE in this species. This study aimed to clarify tissue-level and organ-level distribution of REEs via synchrotron-based X-ray fluorescence microscopy (XFM). The results show that REEs (La + Ce) are mainly colocalized with Mn in the pinnae and pinnules, with the highest concentrations in necrotic lesions and lower concentrations in veins. In the cross sections of the pinnules, midveins, rachis, and stolons, La + Ce and Mn are enriched in the epidermis, vascular bundles, and pericycle (midvein). In these tissues, Mn is localized mainly in the cortex and mesophyll. We hypothesize that the movement of REEs in the transpiration flow in the veins is initially restricted in the veins by the pericycle between vascular bundle and cortex, while excess REEs are transported by evaporation and cocompartmentalized with Mn in the necrotic lesions and epidermis in an immobile form, possibly a Si-coprecipitate. The results presented here provide insights on how D. linearis regulates high concentrations of REEs in vivo, and this knowledge is useful for developing phytotechnological applications (such as REE agromining) using this fern in REE-contaminated sites in China.
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Affiliation(s)
- Wen-Shen Liu
- School of Environmental Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology , Sun Yat-sen University , Guangzhou 510275 , China
- Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation , Sun Yat-sen University , Guangzhou 510275 , China
| | - Antony van der Ent
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute , The University of Queensland , St Lucia , Queensland 4072 , Australia
- Université de Lorraine, INRA, Laboratoire Sols et Environnement , Nancy 54000 , France
| | - Peter D Erskine
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute , The University of Queensland , St Lucia , Queensland 4072 , Australia
| | - Jean Louis Morel
- Université de Lorraine, INRA, Laboratoire Sols et Environnement , Nancy 54000 , France
| | - Guillaume Echevarria
- Centre for Mined Land Rehabilitation, Sustainable Minerals Institute , The University of Queensland , St Lucia , Queensland 4072 , Australia
- Université de Lorraine, INRA, Laboratoire Sols et Environnement , Nancy 54000 , France
| | - Kathryn M Spiers
- Photon Science, Deutsches Elektronen-Synchrotron DESY , Hamburg 22607 , Germany
| | - Emmanuelle Montargès-Pelletier
- CNRS-Université de Lorraine Laboratoire Interdisciplinaire des Environnements Continentaux , Vandoeuvre-lès-Nancy F-54500 , France
| | - Rong-Liang Qiu
- School of Environmental Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology , Sun Yat-sen University , Guangzhou 510275 , China
- Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation , Sun Yat-sen University , Guangzhou 510275 , China
| | - Ye-Tao Tang
- School of Environmental Science and Engineering , Sun Yat-sen University , Guangzhou 510275 , China
- Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology , Sun Yat-sen University , Guangzhou 510275 , China
- Guangdong Provincial Engineering Research Center for Heavy Metal Contaminated Soil Remediation , Sun Yat-sen University , Guangzhou 510275 , China
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Echevarria G, Baker AJM, Boyd RS, van der Ent A, Mizuno T, Rajakaruna N, Sakaguchi S, Bani A. A global forum on ultramafic ecosystems: from ultramafic ecology to rehabilitation of degraded environments. Ecol Res 2018. [DOI: 10.1007/s11284-018-1611-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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