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Photosystem 2 activities of hyper-accumulator Dicranopteris dichotoma Bernh from a light rare earth elements mine
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wang, Lan Fen Ji, Bing Bai, Ke Zhao Kuang, Ting Yun |
| Copyright Year | 2006 |
| Abstract | The distribution of rare earth elements (REEs) in the fern Dicranopteris dichotoma Bernh plants from a light rare earth elements mine (LRM) and a non-mining (NM) area in Longnan county of Jiangxi province, China were investigated by means of inductively coupled plasma-mass spectrometry, transmission electron microscopy, and energy-dispersive X-ray microanalysis. The photosynthetic characteristics of D. dichotoma were studied by chlorophyll (Chl) a fluorescence kinetics. Contents of REEs in the lamina and the root of D. dichotoma were higher than those in soils, and were mainly distributed in lamina. A part of them was found in the chloroplast. By comparing with D. dichotoma from NM area, the efficiency of photosystem 2 photochemistry and electron transport rate were significantly enhanced in lamina of the plant from LRM because most of REEs deposits were distributed along cell wall, in vacuole, and in chloroplast. High contents of REEs in lamina did not decrease the photosynthetic activities in LRM plants of D. dichotoma. Besides, D. dichotoma could change its β-carotene content to avoid the damaging effect of high REEs content. |
| Starting Page | 202 |
| Ending Page | 207 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s11099-006-0007-8 |
| Volume Number | 44 |
| Alternate Webpage(s) | https://ps.ueb.cas.cz/pdfs/phs/2006/02/07.pdf |
| Journal | Photosynthetica |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
