Record ID No. |
1860 |
Author(s) |
Vodnik D., Grcman H., Macek I., vanElteren J.T., Kovacevic M , 2008 |
Affiliation |
University of Ljubljana, Dept Agron, Biotech Fac, Jamnikarjeva 101, SI-1001 Ljubljana, SLOVENIA |
Title |
The contribution of glomalin-related soil protein to Pb and Zn sequestration in polluted soil |
Source. Vol.(no):Page |
Science of the Total Environment.392(1):130-136p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biochemistry |
Sub-subjects |
Miscellaneous |
Organism |
n.a. |
Country |
SLOVENIA, Europe |
Abstracts |
The distribution of lead and zinc in glomalin-related soil protein (GRSP), a
widespread glycoprotein presumably produced by arbuscular mycorrhizal fungi (AMF) in soil, and in
some other soil fractions (soil organic matter - [SOM], carbonates, phosphates, etc.) was studied
in soils from an area near a lead smelter that differed in SOM, carbonates and heavy metal (HM)
content. Total GRSP represented 5.4-21.2% of the SOM and was positively correlated with the soil
Pb and Zn concentrations (r= 0.57 and 0.66, p = 0.007 and p = 0.001 for Pb and Zn, respectively).
Pb and Zn were predominantly bound to carbonates and organic matter. The amount of lead bound to
GRSP varied between 0.69 and 23.4 mg g(-1) DW GRSP which is 0.8-15.5% of the total soil Pb. The
amount of GRSP-bound metal was positively correlated with the total concentration in the case of
Pb (r=0.90, p=0.000) but the opposite was found for Zn (r=-0.41, p=0.048), indicating that GRSP
predominantly binds Pb. The percentages of HM-GRSP in HM-SOM were variable and were not
correlated with SOM content. (C) 2007 Elsevier B.V. All rights reserved. |