Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33648
Title: The copper tolerance mechanisms of Elsholtzia haichowensis, a plant from copper-enriched soils
Authors: Lou, LQ
Shen, ZG
Li, XD 
Keywords: Cell wall
Cu
Cu-binding proteins
Elsholtzia haichowensis
Tolerance
Uptake
Issue Date: 2004
Publisher: Elsevier
Source: Environmental and experimental botany, 2004, v. 51, no. 2, p. 111-120 How to cite?
Journal: Environmental and experimental botany 
Abstract: Hydroponic cultures were conducted to investigate the effect of excessive Cu on the seed germination and growth of Elsholtzia haichowensis Sun, a Cu tolerant plant from the Tongling Cu mining sites in eastern China. Experiments were also carried out to study Cu accumulation and tolerance mechanisms of E. haichowensis seedlings. A significant decrease of seed germination was only found in the treatments with more than 750μmoll-1 Cu and E. haichowensis seedlings were able to tolerate 250μmoll-1 Cu in solution without growth reduction in comparison with the control group during the seed germination period. Ten micromol per litre Cu did not affect the root elongation. Higher concentrations of Cu caused the decreases of root and hypocotyl elongation, germination, and chlorophyll and carotenoids concentrations of E. haichowensis. The effect of Cu on plant growth was more pronounced in the roots than in the shoots. Up to 160μgg-1 of Cu (DM) was found in the shoots of E. haichowensis treated with 500μmoll -1 Cu. In all treatments, Cu concentrations were higher in the roots than that in the shoots. The results also showed that most Cu was bound on cell walls in the roots, accounting for more than 60% of the total concentration. Exposing E. haichowensis in high Cu solution elicits a large level of proteins. Through a gel filtration chromatography on Sephadex G-50, three Cu peaks were eluted out with three protein peaks.
URI: http://hdl.handle.net/10397/33648
ISSN: 0098-8472
EISSN: 1873-7307
DOI: 10.1016/j.envexpbot.2003.08.002
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

SCOPUSTM   
Citations

115
Last Week
0
Last month
1
Citations as of Aug 14, 2017

WEB OF SCIENCETM
Citations

105
Last Week
0
Last month
2
Citations as of Aug 21, 2017

Page view(s)

49
Last Week
2
Last month
Checked on Aug 20, 2017

Google ScholarTM

Check

Altmetric



Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.