Mechanisms for Translocation of Heavy Metals from Soil to Epigeal Mosses |
| |
Authors: | K?os Andrzej Czora Marcin Rajfur Ma?gorzata Wac?awek Maria |
| |
Institution: | (1) Chair of Biotechnology and Molecular Biology, University of Opole, 4 kard. B. Kominka Str., 45-032 Opole, Poland;(2) Chair of Biotechnology and Molecular Biology, University of Opole, 6 kard. B. Kominka Str., 45-032 Opole, Poland |
| |
Abstract: | The mechanisms for translocation of heavy metals from soil to epigeal mosses were investigated. The first mechanism was demonstrated
for 137Cs and involved the uplifting of the pollutant-containing dust from the soil, followed by the local secondary deposition on
surfaces of epigeal mosses and epiphytic lichens. The second mechanism involved the diffusion of metal cations from the soil
through water wetting the moss into the gametophyte. The mechanism was demonstrated by measuring the electric conductance
of wetted gametophytes with single ends immersed in solutions of Cu and Na salts. In addition, the concentrations of Cu and
Cd were compared in moss samples exposed to the natural soil and to the soil contaminated with the metals. The exposition
to the contaminated soil resulted in the statistically significant increase of metal concentrations in the gametophytes. |
| |
Keywords: | |
本文献已被 PubMed SpringerLink 等数据库收录! |
|