Absorption of Cadmium and Lead Ions by Gametophyte of the MossPlagiomnium undulatum

Absorption of Cadmium and Lead Ions by Gametophyte of the MossPlagiomnium undulatum A cytochemical analysis of heavy-metal distribution was used to establish an increased ability of the marginal and midrib cells of moss leaves to accumulate metal ions from solutions of lead and cadmium nitrate. The adjacent leaf cells accumulated metal ions more slowly. As shown by the color reaction produced by metal–dithizone complex, the concentration of the absorbed metal ions in the cells increased more than 100-fold as compared to the salt concentration in the solution. The morphological differentiation of the marginal and midrib cells was closely related to the cytosolic pH value and the absorption capacity of cells. Metal ions absorbed in excess of the capacity of absorption sites were not bound by cells and readily washed out. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Absorption of Cadmium and Lead Ions by Gametophyte of the MossPlagiomnium undulatum

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Publisher
Springer Journals
Copyright
Copyright © 2001 by MAIK “Nauka/Interperiodica”
Subject
Life Sciences; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1023/A:1012525028652
Publisher site
See Article on Publisher Site

Abstract

A cytochemical analysis of heavy-metal distribution was used to establish an increased ability of the marginal and midrib cells of moss leaves to accumulate metal ions from solutions of lead and cadmium nitrate. The adjacent leaf cells accumulated metal ions more slowly. As shown by the color reaction produced by metal–dithizone complex, the concentration of the absorbed metal ions in the cells increased more than 100-fold as compared to the salt concentration in the solution. The morphological differentiation of the marginal and midrib cells was closely related to the cytosolic pH value and the absorption capacity of cells. Metal ions absorbed in excess of the capacity of absorption sites were not bound by cells and readily washed out.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 10, 2004

References

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