PECULIARITY OF ABSORPTION ION OF HEAVY METALS BY
PLAGIOMNIUM UNDULATUM (HEDW.) T.KOP. AND ITS REACTION ON
THEIR TOXICAL ACTION
S.Majewska, O.Kardash, L.Demkiv, O.Lobachevska
Institute of Ecology of the Carpathians National Academy of Sciences,
Stefanika St. 11, 79000 Lviv, Ukrainà
e-mail: ecoinst @instecoc.cscd.lviv.ua
Ability of moss Plagiomnium undulatum (Hedw.) T.Kop. to accumulate cadmium and lead in concentrations 100-1000 times higher than in the substrate was investigated. Accumulation of cadmium and lead poved to be directly dependent on their concentrations in the substrate on the age of plants and incubation time. Much higher ability to accumulate cadmium and lead is charakterized by of P. undulatum in comparison with Funaria hygrometrica (Hedw.) and Sphagnum sp. Nevertheless, P. undulatum is characterized much more stabile to toxical action of cadmium than F. hygrometrica. Low concentration of cadmium (0,01mM) stimulated regeneration ability of isolated gametophores P.undulatum, as well as luminiscent intensity of chlorofil in the isolated leaves. The direct correlation between concentration of cadmium in the substrate and inhibition of regeneration rate of isolated gametophores and leaves was stated.
Key words: cadmium, lead, absorption, distribution, isolated gametophores, leaves, mosses.
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