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| 001 | 166437 | ||
| 005 | 20250730152250.0 | ||
| 024 | 7 | _ | |a 10.1039/c3mt00088e |2 doi |
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| 100 | 1 | _ | |a Andresen, Elisa |0 P:(DE-H253)PIP1015968 |b 0 |
| 245 | _ | _ | |a Different strategies of cadmium detoxification in the submerged macrophyte Ceratophyllum demersum L. |
| 260 | _ | _ | |a Cambridge |c 2013 |b RSC Publ. |
| 336 | 7 | _ | |a article |2 DRIVER |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1529605094_29810 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 500 | _ | _ | |a (c) The Royal Society of Chemistry; Post referee fulltext in progress; Embargo 12 months from publication |3 POF3_Assignment on 2016-02-09 |
| 520 | _ | _ | |a The heavy metal cadmium (Cd) is highly toxic to plants. To understand the mechanisms of tolerance and resistance to Cd, we treated the rootless, submerged macrophyte Ceratophyllum demersum L. with sub-micromolar concentrations of Cd under environmentally relevant conditions. X-ray fluorescence measurements revealed changing distribution patterns of Cd and Zn at non-toxic (0.2 nM, 2 nM), moderately toxic (20 nM) and highly toxic (200 nM) levels of Cd. Increasing Cd concentrations led to enhanced sequestration of Cd into non-photosynthetic tissues like epidermis and vein. At toxic Cd concentrations, Zn was redistributed and mainly found in the vein. Cd treatment induced the synthesis of phytochelatins (PCs) in the plants, with a threshold of induction already at 20 nM Cd for PC3. In comparison, in plants treated with Cu, elevated PC levels were detected only at the highest concentrations (100–200 nM Cu). Our results show that also non-accumulators like C. demersum store toxic metals in tissues where the heavy metal interferes least with metabolic pathways, but remaining toxicity interferes with micronutrient distribution. Furthermore, we found that the induction of phytochelatins is not proportional to metal concentration, but has a distinct threshold, specific for each PC species. Finally we could show that 20 nM Cd, which was previously regarded as non-toxic to most plants, already induces detoxifying mechanisms. |
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| 700 | 1 | _ | |a Mattusch, Jürgen |0 P:(DE-HGF)0 |b 1 |
| 700 | 1 | _ | |a Wellenreuther, Gerd |0 P:(DE-H253)PIP1006746 |b 2 |
| 700 | 1 | _ | |a Thomas, George |0 P:(DE-H253)PIP1015974 |b 3 |
| 700 | 1 | _ | |a Abad, Uriel A. |0 P:(DE-HGF)0 |b 4 |
| 700 | 1 | _ | |a Kuepper, Hendrik |0 P:(DE-H253)PIP1013392 |b 5 |e Corresponding author |
| 773 | _ | _ | |a 10.1039/c3mt00088e |0 PERI:(DE-600)2474317-3 |n 10 |p 1377-1386 |t Metallomics |v 5 |y 2013 |x 1756-5901 |
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