Metal uptake byCaryophyllaceae species from metalliferous soils in northern Greece |
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Authors: | Maria Konstantinou Dimitrios Babalonas |
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Institution: | (1) Institute of Systematic Botany and Phytogeography, Department of Botany, School of Biology, Aristotle University of Thessaloniki, Gr-540 06 Thessaloniki, Greece |
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Abstract: | Plant samples collected from 17 populations of 9 taxa of the generaDianthus, Minuartia, Scleranthus, andSilene (Caryophyllaceae), growing in 14 metalliferous sites of N Greece, and surface soil samples from their growth area were analysed for Cu, Pb, Zn, Cd, Ni, Cr, Fe, Mn, Ca, Mg. Metal uptake varies considerably between the populations. A resistance mechanism excluding Cu and Pb from the aerial parts of the plants over a wide range of the soil concentrations up to a critical soil level appeared to exist, whereas Zn concentrations in plants were analogously related to those of the soil.Scleranthus perennis subsp.perennis showed the highest Cu concentration (205 µg/g), whereasMinuartia cf.bulgarica hyperaccumulated Pb (1175 µg/g). Ca concentrations in plants were in most cases much higher than those in soil, whereas the contrary was true for Mg. As a result the Ca/Mg ratio, which was in almost all cases lower than 1 in the soil, was much increased in the plants. |
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Keywords: | Caryophyllaceae Dianthus Minuartia Scleranthus Silene Metal uptake metalliferous sites northern Greece |
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