Determination of inorganic and organic anions in xylem saps of two contrasting oilseed rape ( Brassica juncea L.) varieties: Roles of anions in long-distance transport of cadmium

By optimizing chromatographic conditions of an ion chromatographic system, we identified and measured the major inorganic and organic anions (chloride, nitrate, malate, sulfate, phosphate and citrate) in the xylem saps of two contrasting tolerant oilseed rape ( Brassica juncea L.) varieties (the hig...

Full description

Saved in:
Bibliographic Details
Published in:Microchemical journal 2007-06, Vol.86 (1), p.53-59
Main Authors: Wei, Zhenggui, Wong, Jonathan Woonchung, Hong, Fashui, Zhao, Haiyan, Li, Huixin, Hu, Feng
Format: Article
Language:English
Subjects:
Brassica juncea
Cadmium
Genotype
Inorganic anion
Organic anion
Xylem sap
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:By optimizing chromatographic conditions of an ion chromatographic system, we identified and measured the major inorganic and organic anions (chloride, nitrate, malate, sulfate, phosphate and citrate) in the xylem saps of two contrasting tolerant oilseed rape ( Brassica juncea L.) varieties (the high Cd-accumulating genotype Xikou Huazi and the low Cd-accumulating genotype Liangting Huazi). Cadmium concentrations in xylem saps were determined by graphite furnace atomic absorption spectrometry. By analyzing the relationship between anion and cadmium concentrations, we considered that the relatively low phosphate concentrations in Xikou Huazi xylem saps might relate to the relatively high xylem transport of Cd for this genotype, and malate in oilseed rape xylem saps seemed to participate in the long-distance Cd translocation process. Our work might not only be very useful for understanding the mechanisms of Cd hyperaccumulation for Xikou Huazi, but also very beneficial for future application of Xikou Huazi in phytoremediation.
ISSN:0026-265X
1095-9149
DOI:10.1016/j.microc.2006.10.003