Fractionations of rare earth elements (REEs) and their mechanisms in soybean were studied through application of exogenous mixed REEs under hydroponic conditions. Significant enrichment of middle REEs (MREEs) and heavy REEs (HREEs) was observed in plant roots and leaves respectively, with slight fractionation between light REEs (LREEs) and HREEs in stems. Moreover, the tetrad effect was observed in these organs. Investigations into REE speciation in roots and in the xylem sap using X-ray absorption spectroscopy (XAS) and nanometer-sized TiO2 adsorption techniques, associated with other controlled experiments, demonstrated that REE fractionations should be dominated by fixation mechanism in roots caused by cell wall absorption and phosphate precipitation, and by the combined effects of fixation mechanism and transport mechanism in aboveground parts caused by solution complexation by intrinsic organic ligands. A conceptive model was established for REE fractionations in plants based on the above studies.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s11427-007-2040-7 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Yield of family screening for dilated cardiomyopathy: 10-year experience at a multidisciplinary cardiogenetic outpatient clinic.
Neth Heart J
January 2025
Department of Cardiology, University Medical Centre Utrecht, Utrecht, The Netherlands.
Introduction: Current family screening approaches in dilated cardiomyopathy (DCM) depend on the presence or absence of a familial genetic variant, in which variant pathogenicity (i.e. benign or pathogenic) classification drives screening recommendations.
View Article and Find Full Text PDFSun-simulated-driven production of high-purity methanol from carbon dioxide.
Nat Commun
January 2025
MOE International Joint Laboratory of Materials Microstructure, Institute for New Energy Materials and Low Carbon Technologies, Analysis and Testing Center, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin, 300384, China.
CO conversion to CHOH under mild conditions is of particular interest yet rather challenging. Both electro- and thermo-catalytic CO reduction to CHOH can only produce CHOH in low concentration (typically mixed with water), requiring energy-intensive purification processes. Here we design a sun-simulated-driven tandem catalytic system comprising CO electroreduction to syngas, and further photothermal conversion into high-purity CHOH (volume fraction > 97%).
View Article and Find Full Text PDFImmunosuppressive therapy to treat newly diagnosed primary heart involvement in patients with systemic sclerosis: An Italian cardiac magnetic resonance based study.
Semin Arthritis Rheum
January 2025
Unit of Immunology, Rheumatology, Allergy and Rare diseases, IRCCS San Raffaele Hospital, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy.
Background: Primary heart involvement (pHI) is frequent in systemic sclerosis (SSc), and is associated with a poor prognosis. Therapeutic strategies to treat SSc-pHI are not yet defined.
Objectives: To evaluate the efficacy of immunosuppressive therapy on cardiac magnetic resonance (CMR) features in patients with CMR-proven SSc-pHI.
MethylBERT enables read-level DNA methylation pattern identification and tumour deconvolution using a Transformer-based model.
Nat Commun
January 2025
Division of Cancer Epigenomics, German Cancer Research Center (DKFZ), Heidelberg, Germany.
DNA methylation (DNAm) is a key epigenetic mark that shows profound alterations in cancer. Read-level methylomes enable more in-depth analyses, due to their broad genomic coverage and preservation of rare cell-type signals, compared to summarized data such as 450K/EPIC microarrays. Here, we propose MethylBERT, a Transformer-based model for read-level methylation pattern classification.
View Article and Find Full Text PDFTreatment with BRAF/MEK: inhibitors in mutant BRAF V600E papillary craniopharyngioma.
Endocr Oncol
January 2024
Department of Oncology, Department of Clinical Sciences, Lund University, Skåne University Hospital, Lund, Sweden.
Summary: Craniopharyngiomas (CPs) are rare brain epithelial tumours arising in the suprasellar region, infiltrating adjacent areas causing visual loss, panhypopituitarism, cognitive deficits and morbid obesity. Papillary CPs (PCPs) harbour in 94% BRAF mutation cases. Two patients with PCP and BRAF V600E mutations but with different tumour status were treated with BRAF and MEK inhibitors.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!