Cellular distribution of arsenic and other elements in hyperaccumulator Pteris nervosa and their relations to arsenic accumulation

被引：34

作者：

Chen, TB ^{[1
]}

Huang, ZC

Huang, YY

Xie, H

Liao, XU

机构：

[1] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Lab Environm Remediat, Beijing 100101, Peoples R China

[2] Chinese Acad Sci, Inst High Energy Phys, Lab Synchrotron Radiat, Beijing 100039, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2003年 / 48卷 / 15期

基金：

中国国家自然科学基金;

关键词：

hyperaccumulator; Pteris nervosa; arsenic; element; microanalysis; SRXRF;

D O I：

10.1360/03wc0057

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Synchrotron radiation X-ray fluorescence spectroscopy (SRXRF) was used to study the cellular distributions of arsenic and other elements in root, petiole, pinna of a newly discovered arsenic hyperaccumulator, Pteris nervosa. It was shown that there was a trend in P. nervosa to transport arsenic from cortex tissue to vascular tissue in root, and keep arsenic in vascular during transportation in petiole, and transport arsenic from vascular tissue to adaxial cortex tissues in midrib of pinnae. More arsenic was accumulated in mesophyll than in epidermis in pinnae. The distributions of some elements, such as K, Ca, Mn, Fe, Cu, Zn, in petiole, midrib and pinna were similar to that of arsenic, indicating that those cations might cooperate with arsenic in those transportation processes; whereas the distributions of Cl and Br in pinna were the reverse of that of arsenic, indicating that those anions might compete with arsenic in pinna of P. nervosa.

引用

页码：1586 / 1591

页数：6

共 20 条

[1] Cadmium localization and quantification in the plant Arabidopsis thaliana using micro-PIXE [J].