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Heavy metal (Pb) accumulation in metallophytes as influenced by the variations in rhizospheric and non-rhizospheric soils physico-chemical characteristics

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Title Heavy metal (Pb) accumulation in metallophytes as influenced by the variations
in rhizospheric and non-rhizospheric soils physico-chemical characteristics
 
Creator Adejumo, Sifau A.
Tiwari, Sarita
Shinde, Vilas
Sarangi, Bijaya Ketan
 
Subject Botany
Microbiology
 
Description Activities at root-soil interface determine the solubility and uptake of metals by plants. Metal accumulation
in plant species (Imperata cylindrical, Cynodon dactylon, Eleucine indica, Gomphrena celosoides, Sporobolus
pyramidalis, Chromolaena odorata and Rhynchospora corymbosa) growing on Pb contaminated site
as influenced by variations in physico-chemical characteristics, dissolved organic matter (DOM), Pb
fractionation and different functional groups (using Fourier Transmittance Infra-red) of rhizospheric and
non-rhizospheric soils was assessed. The electrical conductivity (2660–5520 ms) and Pb concentrations
(51390.0–64080.0 mg/kg) were more in non-rhizospheric than rhizospheric soils having 276 ms to 3160 ms
EC and 3289.0 to 44850.0 mg/kg Pb. More nutrients, DOM and carbohydrates functional groups (C-O; 1100
-1000 and O-H; 3700–3600) were found in rhizospheric compared to non-rhizospheric soils. The pH was
slightly acidic (5.0–5.54) and E. indica with the lowest pH (5.0) accumulated highest Pb concentrations in
shoot (8030 mg/kg) and root (16380 mg/kg) while C. odorata with highest values of pH, P, Ca and Mg in
rhizospheric soil accumulated the least (root; 331.6 and shoot: 209.0 mg/kg). Pb was more in organic and
residual fractions of rhizospheric and non-rhizospheric soils respectively. Reduction in pH, EC coupled with
nutrients and DOM availability increased Pb uptake by plants
 
Publisher Taylor and Francis
 
Date 2018
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1199/1/Heavy%20metal%20Pb%20accumulation%20in%20metallophytes%20as%20influenced%20by%20the%20variations%20in%20rhizospheric%20and%20non%20rhizospheric%20soils%20physico%20chemical.pdf
Adejumo, Sifau A. and Tiwari, Sarita and Shinde, Vilas and Sarangi, Bijaya Ketan (2018) Heavy metal (Pb) accumulation in metallophytes as influenced by the variations in rhizospheric and non-rhizospheric soils physico-chemical characteristics. International Journal of Phytoremediation, 20 (3). pp. 237-248. ISSN 1522-6514, ESSN: 1549-7879
 
Relation https://www.tandfonline.com/toc/bijp20/current
http://neeri.csircentral.net/1199/