文献类型： 外文期刊

作者： Wang Li-Feng ¹ ; Ji Hong-Bing ² ; Tian Wei-Min ¹ ;

作者机构： 1.CATAS, Rubber Res Inst, State Key Lab Incubat Base Cultivat & Physiol Tro, Minist Agr,Key Lab Rubber Biol, Danzhou 571737, Hainan, Peoples R China

2.Capital Normal Univ, Natl Engn Ctr Urban Environm Pollut Control, Div Ecoenvironm Proc, Beijing 100037, Peoples R China

关键词： Dicranopteris dichotoma;photoinhibition;rare earth element;xanthophylls

期刊名称：AFRICAN JOURNAL OF BIOTECHNOLOGY （ 影响因子：0.573； 五年影响因子：0.794 ）

ISSN： 1684-5315

年卷期： 2011 年 10 卷 62 期

页码：

收录情况： SCI

摘要： The distribution of rare earth elements (REEs) in the lamina and chloroplast of fern Dicranopteris dichotoma Bernh 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 (ICP-MS). The photosynthetic characteristics and pigment composition in immature and mature leaves of D. dichotoma were studied by chlorophyll (Chl) a fluorescence kinetics and high performance liquid chromatography (HPLC). Results show that contents of REEs in the lamina and chloroplast of D. dichotoma in LRM were higher than those ferns in NM. By comparing with D. dichotoma from NM area, the efficiency of photosystem 2 photochemistry and electron transport rate were significantly enhanced in mature lamina of the plant from LRM because D. dichotoma could change its xanthophyll cycle content to avoid the damaging effect of high REEs content. However, high irradiance decreased the photosystem 2 photochemistry efficiency in lamina from ferns in LRM suggested that large amount of REEs reduce the capacities to avoid photo damage in D. dichotoma.