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Trees : Volume 27, Issue 2, April 2013

Trees : Volume 27, Issue 1, February 2013

Influence of Ca/Mg ratio and Cd2+ and Pb2+ elements on low molecular weight organic acid secretion by Salix viminalis L. roots into the rhizosphere

Content Provider	Springer Nature Link
Author	Magdziak, Zuzanna Mleczek, Mirosław Kaczmarek, Zygmunt Golinski, Piotr
Copyright Year	2012
Abstract	A modified hydroponic experiment was focused on the influence of mutual changes in the Ca/Mg ratio and trace elements (Cd and Pb) concentration in solution on the efficiency of low molecular weight organic acid (LMWOA) formation in the Salix viminalis rhizosphere. The study showed that changes in the LMWOA contents were caused by the Ca/Mg ratio as well as the kind and concentration of trace element (Cd or Pb) in hydroponic solution. Under 0.5 mM solution of Cd, the total concentration of LMWOAs—depending on the Ca/Mg ratio—decreased according to the formula: 20:1 > 4:1 > 1:10 > 1:¼, while under 0.5 mM of Pb, it was as follows: 20:1 ≈ 4:1 > 1:¼ > 1:10. When comparing all the experimental systems, it is important to underline that regardless of the Ca/Mg ratio, the concentration of LMWOAs in the rhizosphere was higher under 0.5 mM Cd than Pb, with the exception of 1:1/4 Ca/Mg ratio, where the opposite observation was made and both of these values were lower than in the control. In addition, accumulation of Cd and Pb in Salix roots and young shoots was dependent on Ca/Mg ratio only and decreased according to the formula 1:10 > 4:1 > 20:1 > 1:1/4, regardless of Cd or Pb supplementation.
Starting Page	663
Ending Page	673
Page Count	11
File Format	PDF
ISSN	09311890
Journal	Trees
Volume Number	27
Issue Number	3
e-ISSN	14322285
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-12-04
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cadmium Ca/Mg ratio Hydroponic Lead Low molecular weight organic acids Salix Forestry Plant Sciences Agriculture Plant Anatomy/Development Plant Pathology Plant Physiology
Content Type	Text
Resource Type	Article
Subject	Ecology Physiology Plant Science Forestry

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